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19c6998dd49f6cea8ed9b76bfa09f1fe254b843b1a8fb91c824338ebf6060b5d | 2026-01-21T00:00:00-05:00 | Identification of false positive double-lined spectroscopic binaries in LAMOST-MRS data due to moonlight contamination | arXiv:2601.12824v1 Announce Type: new Abstract: We present a method for identifying false positive double-lined spectroscopic binary (SB2) candidates by analysing medium-resolution survey spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR10. Specifically, we focus on spectra contamin... | https://arxiv.org/abs/2601.12824 | Academic Papers | svg |
7f290fbce5ae90723a471734fb3e2f9937c359a16c1c77ac6d827a819aefa4a9 | 2026-01-21T00:00:00-05:00 | Project FOSSO I: Fates of the Known BDs in MS-BD Binaries | arXiv:2601.12861v1 Announce Type: new Abstract: Context. Understanding the survival and orbital evolution of brown dwarf (BD) companions during the post-main-sequence (MS) evolution of their host stars is increasingly important, especially with recent discoveries of many substellar companions around white dwarfs (WDs).... | https://arxiv.org/abs/2601.12861 | Academic Papers | svg |
0e5fd3bdab928b3dca81ef50c6396a5e4aec8701ae5d4e144c7b8eb20e7ad043 | 2026-01-21T00:00:00-05:00 | Exploring rotational properties and the YORP effect in asteroid families | arXiv:2601.12972v1 Announce Type: new Abstract: The long-term dynamical evolution of asteroid families is governed by the interplay between orbital and rotational evolution driven by thermal forces and collision. We aim to observationally trace the rotational evolution of main-belt asteroid families over Gyr timescales... | https://arxiv.org/abs/2601.12972 | Academic Papers | svg |
dc5555a9758b2e095f2f01d8a8b88a8c860bbec5cc8f26dfdb81f8419bfb4b87 | 2026-01-21T00:00:00-05:00 | Joint analysis of small-scale galaxy clustering and galaxy--galaxy lensing from BOSS galaxies | arXiv:2601.12976v1 Announce Type: new Abstract: We present a joint analysis of galaxy clustering and galaxy--galaxy lensing measurements from BOSS galaxies using a simulation-based emulation method combined with a halo occupation distribution model. Our emulators are constructed with the Aemulus $\nu$ simulations, a su... | https://arxiv.org/abs/2601.12976 | Academic Papers | svg |
8eb1d86586d663299cbc828cdc80dd5401b03ec41f888cd874289b96a4b19e36 | 2026-01-21T00:00:00-05:00 | BE Lyncis: An Extremely Eccentric Binary with the Nearest Known Black Hole | arXiv:2601.12999v1 Announce Type: new Abstract: We report the discovery of an exceptionally eccentric binary system, BE Lyncis (BE Lyn), which hosts the nearest known black hole (BH) to Earth. Through the analysis of $\textit{TESS}$ photometry combined with an extensive set of times of maximum light spanning 39 years, ... | https://arxiv.org/abs/2601.12999 | Academic Papers | svg |
f7127622b4b17a1643cc5015d9664793fedc49e518b4b949d24513715279a622 | 2026-01-21T00:00:00-05:00 | Continuous-Time Modelling of Black Hole Binary Evolution with Neural ODEs | arXiv:2601.13019v1 Announce Type: new Abstract: Pulsar timing arrays (PTAs) can detect the low-frequency stochastic gravitational-wave background (GWB) generated by an ensemble of supermassive black hole binaries (BHBs). Accurate determination of BHB merger timescales is essential for interpreting GWBs and constraining... | https://arxiv.org/abs/2601.13019 | Academic Papers | svg |
1c822f0237ee3c7065136847197debcf419ee198f302e13c7b269f8f514b4dac | 2026-01-21T00:00:00-05:00 | Tracing cosmic structure with neutral hydrogen after the Epoch of Reionization | arXiv:2601.13023v1 Announce Type: new Abstract: We present a study of the transition of Neutral Hydrogen (HI) gas from the end of the Epoch of Reionization (EoR) to late-time large-scale structure. We examine the signature of the transition as traced through the redshifted 21-cm line with SKA-Low at $3 < z < 7$. To do ... | https://arxiv.org/abs/2601.13023 | Academic Papers | svg |
2c198d82e6e7b91436a9b5d5c361ecbedf9ce03c6d16adbb0f631a9fcc6bd0bb | 2026-01-21T00:00:00-05:00 | The long-term evolution of Ultra Faint Dwarf Galaxies and observational implications | arXiv:2601.13049v1 Announce Type: new Abstract: Context. In the Local Group, dwarf spheroidal galaxies (dSphs) and ultra-faint dwarf galaxies (UFDs) exhibit large velocity dispersions. These values are generally attributed to the presence of substantial amounts of dark matter (DM), in line with the predictions of the s... | https://arxiv.org/abs/2601.13049 | Academic Papers | svg |
87c2b3c60e0706cb4273e3db565ebb56123e25c463030e1a26cd00fac76c121f | 2026-01-21T00:00:00-05:00 | Was the Early Universe Quantum? Falsifying Classical Stochastic Inflation | arXiv:2601.13053v1 Announce Type: new Abstract: Inflationary cosmology successfully accounts for the observed properties of primordial fluctuations using quantum field theory in an expanding background. However, the quantum nature of these fluctuations has not been experimentally established, since classical stochastic... | https://arxiv.org/abs/2601.13053 | Academic Papers | svg |
c56a67fc5eefb3902943c5d1b26eb22c30da07b7e0fec323a610b79fd2920e3a | 2026-01-21T00:00:00-05:00 | Simulating the quasi-ballistic regime of a short Gamma-Ray Burst jet | arXiv:2601.13056v1 Announce Type: new Abstract: This study extends the 3D magnetohydrodynamic (MHD) simulation of a jet emerging from a binary neutron star (BNS) merger presented in Pavan et al. (2023), in which an incipient jet was manually injected into the realistic environment imported from a previous general-relat... | https://arxiv.org/abs/2601.13056 | Academic Papers | svg |
0676ffa9b116dbe90a92c09915f449722459cae03918bd0d08b257ca91e1770a | 2026-01-21T00:00:00-05:00 | Antarctic Infrared Binocular Telescope: Early Data Release of observations in the 1.4 {\mu}m water-vapor-absorption band | arXiv:2601.13068v1 Announce Type: new Abstract: Ground-based observations around 1.4 $\mu$m are normally limited by strong absorption of telluric water-vapor. However, Dome A, Antarctica has exceptionally dry conditions that offer a unique opportunity for observations in this band. We designed a new filter covering 1.3... | https://arxiv.org/abs/2601.13068 | Academic Papers | svg |
39085cae70b457da03ac8537e76e1121cfd60f39f7e99d9d9fe1b958ba32f879 | 2026-01-21T00:00:00-05:00 | BOWIE-ALIGN: Sub-solar C/O ratio and metallicity atmosphere of the misaligned hot Jupiter HAT-P-30b | arXiv:2601.13104v1 Announce Type: new Abstract: We present the JWST NIRSpec/G395H transmission spectrum of the misaligned hot Jupiter HAT-P-30b from 2.8--5.2 $\mu$m as part of the BOWIE-ALIGN survey, a comparative survey designed to probe the link between planet formation and atmospheric composition in samples of misal... | https://arxiv.org/abs/2601.13104 | Academic Papers | svg |
c56958ab63d19e1ba45285b3df62781139727f4ad6627c9f00834ddec869829b | 2026-01-21T00:00:00-05:00 | Tidal capture and repeating partial tidal disruption events of giant stars | arXiv:2601.13113v1 Announce Type: new Abstract: When an object is scattered near a supermassive black hole (SMBH), tidal oscillations excited within it reduce its orbital energy, leading to capture by the SMBH. This process, called tidal capture, can also occur when the object approaches even closer to the SMBH, result... | https://arxiv.org/abs/2601.13113 | Academic Papers | svg |
9ca9b2ec8b869d37937d80f97b316f65c4c50b81e09030278c6553a2505779d8 | 2026-01-21T00:00:00-05:00 | Simulating radio emission from flickering AGN jets: travelling shocks and hotspot brightening | arXiv:2601.13138v1 Announce Type: new Abstract: We investigate the impact of flickering variability in jet power on the luminosity and morphology of radio galaxies. We use a Lagrangian particle method together with relativistic hydrodynamics simulations using the PLUTO code to track the evolution of electron spectra th... | https://arxiv.org/abs/2601.13138 | Academic Papers | svg |
90a726f3a958ef1f16d387e84d77fe520932a6632c76a328eb975a749ef08b0e | 2026-01-21T00:00:00-05:00 | MARVEL Analysis of the Measured High-resolution Spectra of CO Isotopologues | arXiv:2601.13141v1 Announce Type: new Abstract: Carbon monoxide is thought to be the second most abundant molecule in the Universe. This makes observation of both its parent isotopologue ($^{12}$C$^{16}$O) and its stable isotopologues, $^{13}$C$^{16}$O, $^{12}$C$^{18}$O, $^{12}$C$^{17}$O, $^{13}$C$^{18}$O and $^{13}$C$... | https://arxiv.org/abs/2601.13141 | Academic Papers | svg |
cf3dbe6c59840c19a4dd77ef068fbfdf998c7f0766fe371517eb0f19e60a7b2e | 2026-01-21T00:00:00-05:00 | Forecasting Continuum Intensity for Solar Active Region Emergence Prediction using Transformers | arXiv:2601.13144v1 Announce Type: new Abstract: Early and accurate prediction of solar active region (AR) emergence is crucial for space weather forecasting. Building on established Long Short-Term Memory (LSTM) based approaches for forecasting the continuum intensity decrease associated with AR emergence, this work ex... | https://arxiv.org/abs/2601.13144 | Academic Papers | svg |
17bad8cae09338815f601409e62bf437f908defdef5c93896bf6646f872e4bf7 | 2026-01-21T00:00:00-05:00 | SolARED: Solar Active Region Emergence Dataset for Machine Learning Aided Predictions | arXiv:2601.13145v1 Announce Type: new Abstract: The development of accurate forecasts of solar eruptive activity has become increasingly important for preventing potential impacts on space technologies and exploration. Therefore, it is crucial to detect Active Regions (ARs) before they start forming on the solar surfac... | https://arxiv.org/abs/2601.13145 | Academic Papers | svg |
42531572b96b5226df412b1b6c46d7fd803ec15b5f330c75bb7743940721d529 | 2026-01-21T00:00:00-05:00 | Time variations of the mean magnetic flux in active regions of different magneto-morphological classes | arXiv:2601.13168v1 Announce Type: new Abstract: Using a recently suggested magneto-morphological classification (MMC, Abramenko, 2021, MNRAS Vol 507) of solar active regions (ARs), we explored 3048 ARs, observed from12 May 1996 to 27 December 2021. Magnetograms were acquired with the Michelson Doppler Imager (MDI) on b... | https://arxiv.org/abs/2601.13168 | Academic Papers | svg |
6df629dd2baa4169fe78f9ac80d39213a8f36e37b137cf9911ab34e9475ea6b6 | 2026-01-21T00:00:00-05:00 | Toward Reliable Interpretations of Small Exoplanet Compositions: Comparisons and Considerations of Equations of State and Materials Used in Common Rocky Planet Models | arXiv:2601.13176v1 Announce Type: new Abstract: The bulk compositions of small planets ($R_p< 2 \mathrm{R}_\oplus$) are directly linked to their formation histories, making reliable compositional constraints imperative for testing models of planet formation and evolution. Because exoplanet interiors cannot be directly ... | https://arxiv.org/abs/2601.13176 | Academic Papers | svg |
104ff674d18b11c421758597560088e299577eddc543a55f2025190ce0ae9078 | 2026-01-21T00:00:00-05:00 | Broadband Variability Analysis of FSRQ PKS\,0402-362 with Indications of Quasi-Periodic Modulation | arXiv:2601.13181v1 Announce Type: new Abstract: We present a comprehensive temporal and spectral study of the flat-spectrum radio quasar PKS~0402$-$362 using \textit{Fermi}-LAT/Swift-XRT/UVOT observations spanning from MJD 54686-60321. The $\gamma$-ray light curve exhibits multiple phases of enhanced activity, with the... | https://arxiv.org/abs/2601.13181 | Academic Papers | svg |
a9c5d511acc2239318d1953749154d3c1676e5b100eb432680ca58332f388e3d | 2026-01-21T00:00:00-05:00 | Timescales diagnostics for saving viscous and MHD-driven dusty discs from external photoevaporation | arXiv:2601.13200v1 Announce Type: new Abstract: The evolution of protoplanetary discs is a function of their internal processes and of their environment. It is unclear if angular momentum is mainly removed viscously or by magnetic winds, or by a combination of the two. While external photoevaporation is expected to inf... | https://arxiv.org/abs/2601.13200 | Academic Papers | svg |
75c0b201b2775101438f7db2aabaca7148d3abee7dce67925cb5541f951f2f67 | 2026-01-21T00:00:00-05:00 | Optomechanical design of the DragonCam microscopic camera | arXiv:2601.13221v1 Announce Type: new Abstract: The DragonCam Microscopic Camera is an instrument being developed for NASA's Dragonfly mission [1] to Saturn's moon Titan. The Microscopic Camera will be body-fixed to the Dragonfly vehicle and will image the surface at a distance of about one meter (98.6 cm nominal) with... | https://arxiv.org/abs/2601.13221 | Academic Papers | svg |
e2dbfa93a98b7d1582d6de4a970981f71257cb690420eab6cf0395bb7afb578f | 2026-01-21T00:00:00-05:00 | An efficient model of cosmology dependence in the covariance matrix of the matter power spectrum | arXiv:2601.13245v1 Announce Type: new Abstract: Covariance matrices are essential cosmological probes of fundamental physics, providing information on numerous fundamental physical parameters and varying with any change in the underlying cosmology. However, this cosmology dependence, while providing excellent informati... | https://arxiv.org/abs/2601.13245 | Academic Papers | svg |
d2a19e7c472b7a6435fc8c4a22040f0ed9437dbde1793de2b33a563ad0a8da7c | 2026-01-21T00:00:00-05:00 | A Newly Identified Degeneracy Keeps the Planetary Interpretation Viable for OGLE-2011-BLG-0950 | arXiv:2601.13276v1 Announce Type: new Abstract: The microlensing event OGLE-2011-BLG-0950 exhibits the well-known ``Planet/Binary'' degeneracy, in which distinct lens configurations produce similar light curves but imply substantially different mass ratios between the lens components. A previous study suggested that hi... | https://arxiv.org/abs/2601.13276 | Academic Papers | svg |
873d5b89ca637d6431f833b2be5704d7cc4b038bebc0debd6c46b4dbeb4f0357 | 2026-01-21T00:00:00-05:00 | The Occurrence Rate of Nearby Planetary Companions to Hot Jupiters | arXiv:2601.13302v1 Announce Type: new Abstract: Of the > 500 confirmed transiting hot jupiters and approximately 2000 additional candidates today, only ten are known to have nearby companion planets. The survival of nearby companions means that these hot jupiters cannot have migrated to their present location via dynam... | https://arxiv.org/abs/2601.13302 | Academic Papers | svg |
fdc597af4ba7ab392d619b14a175f9dfae7c5abd3efbee8182e6de092c76a150 | 2026-01-21T00:00:00-05:00 | Testing the Physical Parameter Constraining Power of HCN and HNC with Neural Networks | arXiv:2601.13305v1 Announce Type: new Abstract: We quantify the utility of HCN and HNC to characterize gas conditions in the nearby starburst galaxy NGC 253. We use measurements from the Atacama Large Millimeter/Submillimeter Array (ALMA) Large Program ALCHEMI: the ALMA Comprehensive High-resolution Molecular Inventory... | https://arxiv.org/abs/2601.13305 | Academic Papers | svg |
2b9c2ac276989dbbb8cbfc1f7480471232bc9545b55fac98fcb6cb199cddcbbf | 2026-01-21T00:00:00-05:00 | Signatures of Black Hole Spin and Plasma Acceleration in Jet Polarimetry II: Off-Axis Jets | arXiv:2601.13307v1 Announce Type: new Abstract: We analyze the polarization of optically thin, stationary, axisymmetric black hole jets at scales of order the light cylinder radius. Our work generalizes the face-on results of Gelles et al. (2025) to arbitrary viewing inclination. Due to a combination of geometry and re... | https://arxiv.org/abs/2601.13307 | Academic Papers | svg |
68894c150a54c25749101bd926e193b61177945a46467482f1b0d107262c0c8c | 2026-01-21T00:00:00-05:00 | Galaxy transformation across the cosmic web: The influence zone of filaments | arXiv:2601.13309v1 Announce Type: new Abstract: The matter distribution in the Universe exhibits a rich variety of structures forming the cosmic web. These structures arise from the anisotropic gravitational collapse of primordial density fluctuations and define the pathways along which galaxies flow from voids to high... | https://arxiv.org/abs/2601.13309 | Academic Papers | svg |
6c4b6771beb1f7cad0a2d0950da476f1c0475d4863250d275ee6d813cf65411c | 2026-01-21T00:00:00-05:00 | Variability as a new discovery channel for Intermediate-Mass Black Holes in the Time Domain Era | arXiv:2601.13311v1 Announce Type: new Abstract: Between the groundbreaking detections of stellar-mass black holes by LIGO/Virgo/KAGRA and JWST's revelation of a surprisingly abundant population of supermassive black holes, one crucial missing link remains: the elusive intermediate-mass black holes (IMBHs). IMBHs repres... | https://arxiv.org/abs/2601.13311 | Academic Papers | svg |
d89a2ed1db8d60f331b656106a0c9696d03d43296271f6ee6e7ab578e518fe6b | 2026-01-21T00:00:00-05:00 | Multi-Tracer Cross-Correlations of the Unresolved $\gamma$-Ray Sky | arXiv:2601.13312v1 Announce Type: new Abstract: Our understanding of the $\gamma$-ray sky has greatly advanced, yet studying the unresolved $\gamma$-ray background (UGRB) can unveil the nature of the faintest $\gamma$-ray source populations in the Universe. Statistical cross-correlations between the UGRB and tracers of... | https://arxiv.org/abs/2601.13312 | Academic Papers | svg |
c1ae6576585a09d1decb5d2f20f48ed162a144e5cb1a12a9cdda23e127a7e6fa | 2026-01-21T00:00:00-05:00 | Combined LOFAR-uGMRT analysis of the diffuse radio emission in the massive clusters Abell 773 and Abell 1351 | arXiv:2601.13316v1 Announce Type: new Abstract: Radio halos are megaparsec-scale diffuse, non-thermal radio sources located at the centers of galaxy clusters, tracing relativistic particles and magnetic fields in the intra-cluster medium. Their origin is generally attributed to cluster mergers that generate turbulence ... | https://arxiv.org/abs/2601.13316 | Academic Papers | svg |
6195b2c80363e40345900d6d56173bfc3bc153593380e4d47fb6bddc77a9fefd | 2026-01-21T00:00:00-05:00 | The ESA Meerkat Asteroid Guard: a monitoring service for imminent impactors | arXiv:2601.13323v1 Announce Type: new Abstract: We present the Meerkat Asteroid Guard, an imminent impactor warning service developed and maintained by the European Space Agency's Near-Earth Object Coordination Centre (NEOCC). The software uses the method of systematic ranging to perform orbit determination on tracklet... | https://arxiv.org/abs/2601.13323 | Academic Papers | svg |
fdddd96bdba32594e850bbbc747b82e330e1cf5c935668b5a7fe9153d690f411 | 2026-01-21T00:00:00-05:00 | The DESIRED temperature-metallicity relations in star-forming regions: probing the Galactic radial and azimuthal metallicity distributions | arXiv:2601.13337v1 Announce Type: new Abstract: We analyse a sample of 225 star-forming regions from the DESIRED-E project, each with simultaneous determinations of the electron temperature from ionized nitrogen and oxygen, $T_{\rm e}$([NII]) and $T_{\rm e}$([OIII]), respectively. We derive new empirical relations conn... | https://arxiv.org/abs/2601.13337 | Academic Papers | svg |
5204f092112444bde3518e96d7f10a23857d4336ea418f49960adc24ba1862d2 | 2026-01-21T00:00:00-05:00 | Locating the missing large-scale emission in the jet of M87* with short EHT baselines | arXiv:2601.13356v1 Announce Type: new Abstract: In Very-Long Baseline Interferometric arrays, nearly co-located stations probe the largest scales and typically cannot resolve the observed source. In the absence of large-scale structure, closure phases constructed with these stations are zero and, since they are indepen... | https://arxiv.org/abs/2601.13356 | Academic Papers | svg |
9cddd526aee764b952137875415c64044665666883985fd4daae0288e6d8946b | 2026-01-21T00:00:00-05:00 | The odyssey of the black hole low mass X-ray binary GX339-4: Five years of dense multi-wavelength monitoring | arXiv:2601.13360v1 Announce Type: new Abstract: We present the longest and the densest quasi-simultaneous radio, X-ray and optical campaign of the black hole low mass X-ray binary GX339-4, covering five years of weekly GX339-4 monitoring with MeerKAT, Swift-XRT and MeerLICHT, respectively. Complementary high frequency ... | https://arxiv.org/abs/2601.13360 | Academic Papers | svg |
571faa8baa58ec75200710b68d46c336e295cb8581c15dfd26611bf142813191 | 2026-01-21T00:00:00-05:00 | Environment and Gas Fraction in Type-2 AGN versus Non-AGN Galaxies | arXiv:2601.13375v1 Announce Type: new Abstract: We investigate the environmental parameters and gas fraction (f$_{gas}$) properties of type~2 AGN and non-AGN galaxies, utilizing a large sample of galaxies from SDSS DR7 with z $\le$ 0.3. We find that the environment affects type~2 AGN and non-AGN galaxies in similar way... | https://arxiv.org/abs/2601.13375 | Academic Papers | svg |
9d021a812fbd80520710e526f9dd2b7017a2c4f2b01295c449d472e304411158 | 2026-01-21T00:00:00-05:00 | Neutrinos from hidden ultraluminous X-ray sources in the Galaxy | arXiv:2601.13378v1 Announce Type: new Abstract: Ultraluminous X-ray sources (ULXs) are point-like sources that exhibit apparent X-ray luminosities exceeding the Eddington limit for stellar-mass compact objects. A widely accepted interpretation is that these systems are X-ray binaries accreting matter possibly at super-... | https://arxiv.org/abs/2601.13378 | Academic Papers | svg |
5ff51b93fe233e7e34bdbd31286bd434551f7ed5a5607e911ebf25d549cf2f22 | 2026-01-21T00:00:00-05:00 | Probing the kinematics of the Local Group with chemically enriched gas in the Hestia simulations | arXiv:2601.13382v1 Announce Type: new Abstract: We present a study of the gas kinematics within the Hestia project, a state-of-the-art set of simulations of the Local Group, with a particular focus on the velocity patterns of different ions and the large-scale motion of gas and galaxies towards the Local Group barycent... | https://arxiv.org/abs/2601.13382 | Academic Papers | svg |
2f1fc850d6f660053aee77b77e7877d2efbef757ae5e3ac2d587560e14e2df14 | 2026-01-21T00:00:00-05:00 | Turbulence Can Persist in the Inner Regions of Weakly-Ionized Planet Forming Disks | arXiv:2601.13391v1 Announce Type: new Abstract: Identifying the mechanisms responsible for angular momentum transport in protoplanetary disks, and the extent to which those mechanisms produce turbulence, is a crucial problem in understanding planet formation. The bulk of the gas in protoplanetary disks is weakly ionize... | https://arxiv.org/abs/2601.13391 | Academic Papers | svg |
b0375a9862bc642f56337ffcf2063979a18354bf2b83bebebcbfbc0329c4904b | 2026-01-21T00:00:00-05:00 | Discovery of 1H-cyclopent[cd]indene (c-C11H8) in TMC-1 with the QUIJOTE line survey: A new three-ringed polycyclic aromatic hydrocarbon | arXiv:2601.13403v1 Announce Type: new Abstract: We report the detection of the polycyclic aromatic hydrocarbon (PAH) 1H-cyclopent[cd]indene (c-C11H8) in TMC-1 with the QUI- JOTE line survey. We detected 22 independent lines corresponding to 88 rotational transitions with quantum numbers ranging from J=19 up to J=24 and... | https://arxiv.org/abs/2601.13403 | Academic Papers | svg |
8001c6e630ff31c0c5cef885ead7fdfc4e4ca9a909059736698b7ebed80f9bc9 | 2026-01-21T00:00:00-05:00 | Mass density structuring around galaxy formation sites: impact on galaxy basic properties | arXiv:2601.13431v1 Announce Type: new Abstract: We study the local evolution of the Universe around galaxy formation sites in the EAGLE50 large-volume reference simulation. Using the reduced inertia tensor (r-TOI), we followed the anisotropic evolution of initially spherical Lagrangian volumes (LVs) centred at galaxy f... | https://arxiv.org/abs/2601.13431 | Academic Papers | svg |
492aa71c9cd5728a145ff20859b9c3ae2efce801535636b0f6c3a5e94cdd546c | 2026-01-21T00:00:00-05:00 | A dual tunnel structure for the Einstein Telescope | arXiv:2601.13438v1 Announce Type: new Abstract: We present a novel tunnel architecture for the Einstein Telescope that departs from the traditional large-cavern approach and reduces the excavated volume by an order of magnitude. In the proposed design, all seismic isolation systems are housed in raise-bore wells drille... | https://arxiv.org/abs/2601.13438 | Academic Papers | svg |
8b8b48b3f0183119faaf7444ab6dd3678357de9260d6b69bea3a50ca80bdd391 | 2026-01-21T00:00:00-05:00 | Observations with the Southern Connecticut Stellar Interferometer. II. First Three-Telescope Observations and a New Diameter Measurement of Arcturus | arXiv:2601.13447v1 Announce Type: new Abstract: We discuss the most recent observations made with the Southern Connecticut Stellar Interferometer (SCSI), which is a three-station stellar intensity interferometer located on the campus of Southern Connecticut State University, in New Haven, Connecticut. Two different kin... | https://arxiv.org/abs/2601.13447 | Academic Papers | svg |
960e89946228d498cff86a1c8a843f82ecae3a3c5012aae68ebfbfd15263654c | 2026-01-21T00:00:00-05:00 | Four Cold Super-Jupiters Revealed by Extended and Complex Microlensing Signals | arXiv:2601.13450v1 Announce Type: new Abstract: We present the analysis of four microlensing events, KMT-2020-BLG-0202, KMT-2022-BLG-1551, KMT-2023-BLG-0466, and KMT-2025-BLG-0121, which exhibit extended and complex anomalies in their light curves. These events were identified through a systematic reanalysis of KMTNet ... | https://arxiv.org/abs/2601.13450 | Academic Papers | svg |
9d57a829649f35b1fb5f16eb2b4b92c0326ea00264817894761ccdbd5c82a205 | 2026-01-21T00:00:00-05:00 | The Relationship between Accretion and Ionised Ejection among Young Stellar Objects in the Coronet Cluster | arXiv:2601.13459v1 Announce Type: new Abstract: We present results from a coordinated, multi-epoch near-infrared and centimeter radio survey of young stellar objects (YSOs) in the Coronet, aimed at probing the connection between mass accretion and ionised mass loss. Using VLT-KMOS, we detect Br$\gamma$ emission in 5 of... | https://arxiv.org/abs/2601.13459 | Academic Papers | svg |
80bc5a625298fed44ce58a295dd5bfccce52e24569139d46be3e94863aabf7f7 | 2026-01-21T00:00:00-05:00 | Magnetic field morphological diagnostics with ALMA in the G327.29 protocluster: VGT versus dust polarization | arXiv:2601.13473v1 Announce Type: new Abstract: Magnetic fields and turbulence may play a key role in the evolution of protoclusters, influencing the formation of dense cores and stars. Here, we examine the morphology of the magnetic fields in the G327.29 protocluster using both the velocity gradient technique (VGT) ex... | https://arxiv.org/abs/2601.13473 | Academic Papers | svg |
b53f29c2afd3525d101b9e5b4b5a3d197e1df10a346f905aeb0e9558fef8ad89 | 2026-01-21T00:00:00-05:00 | Architectures of Exoplanetary Systems. IV: A Multi-planet Model for Reproducing the Radius Valley and Intra-system Size Similarity of Planets around Kepler's FGK Dwarfs | arXiv:2601.13480v1 Announce Type: new Abstract: The Kepler-observed distribution of planet sizes have revealed two distinct patterns: (1) a radius valley separating super-Earths and sub-Neptunes and (2) a preference for intra-system size similarity. We present a new model for the exoplanet population observed by Kepler... | https://arxiv.org/abs/2601.13480 | Academic Papers | svg |
8b49a46d7a474b72e288f7f3336c9dcf673e147b3763c29803e0d454a3f14808 | 2026-01-21T00:00:00-05:00 | Initial Investigations of the Outskirts of XLSSC 122 | arXiv:2601.13492v1 Announce Type: new Abstract: We investigate the redshift 1.98 galaxy cluster XLSSC 122 using the Hubble Space Telescope (HST) from the core of the cluster out to 3 Mpc, a scale equivalent to 10 times the R500 = 295 kpc radius. We present an expanded photometric and spectroscopic catalogue of the clus... | https://arxiv.org/abs/2601.13492 | Academic Papers | svg |
8acae64ecfe9273687ddfff7009e562f38b6bc099b343b81e5632345cb791919 | 2026-01-21T00:00:00-05:00 | c-C3H2 deuteration towards prestellar and starless cores in the Perseus Molecular Cloud | arXiv:2601.13495v1 Announce Type: new Abstract: Deuterium fractionation becomes highly efficient in cold, dense cores where CO is frozen out. Cyclopropenylidene (c-C3H2), an early-formed carbon ring, and its deuterated isotopologues trace gas-phase deuteration in these environments. We present a statistical study of c-... | https://arxiv.org/abs/2601.13495 | Academic Papers | svg |
30fb4c87eaf2e0288dbf7a171d79db9e85a990cface21c74f2e77c00fd222f21 | 2026-01-21T00:00:00-05:00 | MIU2Net: weak-lensing mass inversion using deep learning with nested U-structures | arXiv:2601.13538v1 Announce Type: new Abstract: One of the primary goals of next-generation gravitational lensing surveys is to measure the large-scale distribution of dark matter, which requires accurate mass inversion to convert weak-lensing shear maps into convergence (kappa) fields. This work develops a mass invers... | https://arxiv.org/abs/2601.13538 | Academic Papers | svg |
2fc5f1e9126d2f61c764d4d7c09deac7bcb49eeb974dc21b2012cadb05beb28c | 2026-01-21T00:00:00-05:00 | Observational Relationship between Spectral Properties of Gamma-ray and X-ray Emissions from Pulsars | arXiv:2601.13557v1 Announce Type: new Abstract: Correlations between gamma-ray and X-ray spectral properties of pulsars are investigated in order to provide observational hints on physics involved in pulsars' high-energy emissions. Using a sample of 43 pulsars detected in both X-ray and gamma-ray bands, we find that pu... | https://arxiv.org/abs/2601.13557 | Academic Papers | svg |
d60a2c07d8a993e28028a4bd7f401faa7f0eebc6d42b3fc989e6ab2a545f9b14 | 2026-01-21T00:00:00-05:00 | The R2Pub Telescopes for Surveying: An Overview and Performance Evaluation of the System | arXiv:2601.13587v1 Announce Type: new Abstract: The R2Pub telescope, built by the Beijing Planetarium, is a 60 cm equatorial binocular telescope located at the Daocheng site of Yunnan Observatories in China, at an altitude of about 4700 m. This paper presents an overview of the R2Pub telescope system, including its des... | https://arxiv.org/abs/2601.13587 | Academic Papers | svg |
359d88baa73c1f32122a22d84b801e0c5d9980d2d4fcc43e851743b7a903bccb | 2026-01-21T00:00:00-05:00 | The Structure of an 80 pc Long Massive Filament | arXiv:2601.13616v1 Announce Type: new Abstract: Using new Institut de Radioastronomie Millim\'etrique (IRAM) 30m telescope $\rm N_2H^+$, $\rm C^{18}O$ $J$=1-0 and Atacama Pathfinder Experiment (APEX) telescope $\rm ^{13}CO$ and $\rm C^{18}O$ $J$=2-1 maps together with archival far-infrared continuum data, and $\rm ^{12... | https://arxiv.org/abs/2601.13616 | Academic Papers | svg |
47b9036cf09879dbf9707c636946a4cea39f9d79d0dfaed8d96fe7c159144984 | 2026-01-21T00:00:00-05:00 | Joint constraints on cosmic birefringence and early dark energy from ACT, Planck, DESI, and PantheonPlus | arXiv:2601.13624v1 Announce Type: new Abstract: With the increasing number of high-precision astronomical observations, physical quantities that were previously inaccessible to accurate calculations, such as cosmic birefringence, have once again become a focal point of interest. Such phenomena induce a nonvanishing cro... | https://arxiv.org/abs/2601.13624 | Academic Papers | svg |
2468921e8f8dd9d2f66a15459896b61b50be96a75d66c6ae1b5ad8fc19046ed6 | 2026-01-21T00:00:00-05:00 | HD 26172: an active solar-type subgiant in a close binary system | arXiv:2601.13652v1 Announce Type: new Abstract: We present the first comprehensive photometric and spectroscopic analysis of the RS CVn system HD 26172, robustly determining the previously debated evolutionary state of its primary star. Since this system is a single-lined spectroscopic binary with spot-induced light cu... | https://arxiv.org/abs/2601.13652 | Academic Papers | svg |
2ba361c7adfe16873da872efaba087ab2f78266db54d07131e460539338a066d | 2026-01-21T00:00:00-05:00 | Possible time-variable iron-K$\alpha$ emission in the circum-nuclear region of the Circinus galaxy | arXiv:2601.13660v1 Announce Type: new Abstract: We present imaging and spatially resolved spectral analyses of eight Chandra data taken for the Circinus galaxy in $\approx$ 22 years to reveal neutral iron-K$\alpha$ emission on a circumnuclear scale ($\sim$ 10--100 pc) and search for time variability in the emission. By... | https://arxiv.org/abs/2601.13660 | Academic Papers | svg |
2c4324887edc860655b1556343353ab7b83ad7560ef62e72988e29c0b12d6246 | 2026-01-21T00:00:00-05:00 | The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) II. The radial structure of debris discs | arXiv:2601.13670v1 Announce Type: new Abstract: The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) was recently completed to cover the lack of high-resolution observations of debris discs and to investigate the prevalence of substructures such as radial gaps and rings in a sample of 24 discs. This study cha... | https://arxiv.org/abs/2601.13670 | Academic Papers | svg |
95c40c1ae2f677215cdeaa856a971bc1991c548b2962b7c560f5f3cc6466daea | 2026-01-21T00:00:00-05:00 | Three-dimensional properties of a coronal shock and the longitudinal distribution of its related solar energetic particles | arXiv:2601.13692v1 Announce Type: new Abstract: This study aims to investigate the relationship between the spatial-temporal evolution of shock properties and the longitudinal dependence of SEP intensities and spectra. The shock parameters, including the normal speed, oblique angles, compression ratio, and Alfven Mach ... | https://arxiv.org/abs/2601.13692 | Academic Papers | svg |
ab0d8bf7b60bff00575777bde361587de3cbaf283122bf9b2e7a6005d0312fce | 2026-01-21T00:00:00-05:00 | XPE and VLT /FORS2 polarimetry challenge the Seyfert-1.9 classification of MCG-05-23-16 | arXiv:2601.13701v1 Announce Type: new Abstract: We report the third observation of the Seyfert-1.9 active galactic nucleus (AGN) MCG-05-23-16 with the Imaging X-ray Polarimetry Explorer (\textit{IXPE}), together with optical spectro-polarimetry obtained at the Very Large Telescope (VLT), and combined with archival near... | https://arxiv.org/abs/2601.13701 | Academic Papers | svg |
e351e534772c14cb22b89baf1cc1e8985a03818635ab0efb56f25f5be8f0fbf3 | 2026-01-21T00:00:00-05:00 | A jet-gas interaction beyond the host galaxy: detection of a neutral hydrogen outflow at cosmic noon | arXiv:2601.13728v1 Announce Type: new Abstract: We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an \mbox{FR II} radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint and broad \mbox{H{\sc i}} 21 cm absorption line with velocity full width at h... | https://arxiv.org/abs/2601.13728 | Academic Papers | svg |
e2bdd14fc034594daa60dd43c27456a462a365feb65ce0857b282fc4737e5bd3 | 2026-01-21T00:00:00-05:00 | SIRIUS: Dark matter cusp evolution in dense dwarf galaxies | arXiv:2601.13765v1 Announce Type: new Abstract: Dwarf galaxies have a wide variety of structures, such as dark matter (DM) distribution, stellar-to-halo mass ratio, and stellar density. Recent high-resolution simulations have shown a variety of stellar-to-halo mass ratios for dwarf galaxies with a DM halo mass of $\sim... | https://arxiv.org/abs/2601.13765 | Academic Papers | svg |
05f96fe59e3afdb0128634ce4d63b4236be43c3af490878c71d6b2608a7ed17b | 2026-01-21T00:00:00-05:00 | Still Accelerating: Type Ia supernova cosmology is robust to host galaxy age evolution | arXiv:2601.13785v1 Announce Type: new Abstract: Type Ia supernovae are a cornerstone of modern cosmology, providing first evidence for cosmic acceleration and new tests of dark energy. Son et al. 2025 (S25) claim a strong redshift evolution in standardized supernova luminosities driven by supernova progenitor age, with... | https://arxiv.org/abs/2601.13785 | Academic Papers | svg |
148a2fa0cfda7c2515626943df1f5265c3218926324e47c62049892916da44f4 | 2026-01-21T00:00:00-05:00 | Tracing Cosmological Signature with Doppler Lensing: Insights from Cosmological Simulations | arXiv:2601.13820v1 Announce Type: new Abstract: Doppler lensing, a relativistic effect resulting from the peculiar velocities of galaxies along the line of sight, provides insight into the large-scale structure of the Universe. Relativistic simulations are essential for modeling Doppler lensing because they incorporate... | https://arxiv.org/abs/2601.13820 | Academic Papers | svg |
6c4e7070623762b51db69c46ee7b183a4fbdb78f2d89c5d04c1a1af74e1b92e0 | 2026-01-21T00:00:00-05:00 | Examination of frequency and scale dependence of CMB hemispherical power asymmetry | arXiv:2601.13830v1 Announce Type: new Abstract: In this study, we revisit the well-known cosmic microwave background (CMB) anomaly referred to as Hemispherical Power Asymmetry (HPA), using CMB temperature maps from the Planck mission public release 4 (PR4) and the WMAP nine-year data release. Employing the Local Varian... | https://arxiv.org/abs/2601.13830 | Academic Papers | svg |
92ef26deee7d478b2603077c6eede028e4495d98c2fc7950072dc899ff717170 | 2026-01-21T00:00:00-05:00 | Follow-up of three exocomet-host candidates | arXiv:2601.13850v1 Announce Type: new Abstract: Exocomets are small bodies that evaporate when they approach their host star. They are detected through variability of non-photospheric features with spectroscopy and/or asymmetric transits in time-series photometry. In the past four decades ~30 systems have shown such va... | https://arxiv.org/abs/2601.13850 | Academic Papers | svg |
3170c3857cb22d900be4dbcebf159248cc1c31b0eeea7988df8d6bf537387e7e | 2026-01-21T00:00:00-05:00 | The Characteristic Mass and Energy Conversion Efficiency in the Cusp-Core Transition of Dark Matter Haloes: Implications for Scaling Relations and Supernova feedbacks | arXiv:2601.13868v1 Announce Type: new Abstract: Galaxies in the nearby Universe, particularly dwarf systems, exhibit inner mass profiles of dark matter haloes that systematically depart from canonical cold dark matter expectations, signalling an interplay between baryonic feedback and the collisionless halo. We update ... | https://arxiv.org/abs/2601.13868 | Academic Papers | svg |
42d2675aed9540941a97e3e5e40ba6d8b7b6b53ab6489ee1f172779225a5a58d | 2026-01-21T00:00:00-05:00 | Boxy/Peanut Bulges: Comparative Analysis of EGIPS Galaxies and TNG50 Models | arXiv:2601.13893v1 Announce Type: new Abstract: We investigated the properties of boxy/peanut-shaped (B/PS) bulges in a sample of 71 galaxies from the Edge-on Galaxies in the Pan-STARRS Survey (EGIPS) and 20 simulated galaxies from Illustris TNG50 using multicomponent photometric decomposition. For each real and simula... | https://arxiv.org/abs/2601.13893 | Academic Papers | svg |
1028797efa1db8148dd17d7ba9a1d8bf8c32f943829787f79ca3733b50201e94 | 2026-01-21T00:00:00-05:00 | Prospecting MeerKAT Continuum Data for Enigmatic Radio Sources with Unsupervised Vector-Quantised Variational Autoencoders | arXiv:2601.13901v1 Announce Type: new Abstract: We present a novel application of Vector quantised variational autoencoders (VQ-VAEs) to deep 1.28 GHz radio continuum images taken from the MeerKAT Galaxy Cluster Legacy Survey (MGCLS).VQ-VAEs are deep learning models widely used in modern computer vision applications an... | https://arxiv.org/abs/2601.13901 | Academic Papers | svg |
07962836cbcde5e4698bde7e2d5996346709c3db2bfc9b9ae6278e0fd8a34dee | 2026-01-21T00:00:00-05:00 | Frequency shift and viewing direction variations in gravitational lensing | arXiv:2601.13912v1 Announce Type: new Abstract: In a gravitational lensing system, the relative transverse velocities of the lens, source, and observer induce a frequency shift in the observed radiation. While this shift is typically negligible in most astrophysical contexts, strategies for its detection have been prop... | https://arxiv.org/abs/2601.13912 | Academic Papers | svg |
69e029d98a76c3c6ddd87bcd61f9a47276274ea43c801648a440a5266c2e46da | 2026-01-21T00:00:00-05:00 | Primitive asteroids in the main belt, Cybele, and Hilda populations from Gaia DR3 | arXiv:2601.13925v1 Announce Type: new Abstract: Primitive asteroids include C-, P-, and D-classes, known to be dark and having spectra mostly featureless. They differ in the spectral slope, which ranges from moderate values for C-types, and progressively increases in P- and D-types, the latter being the reddest. While ... | https://arxiv.org/abs/2601.13925 | Academic Papers | svg |
0afe6676a13c3efc7fa5c3318f835281f4d393ee5bd088c66ea3ba609258f43c | 2026-01-21T00:00:00-05:00 | Secular Evolution of PSR J2021+4026: Long-Term {\gamma}-Ray Flux and Spin-Down Variability Beyond State Transitions | arXiv:2601.13940v1 Announce Type: new Abstract: PSR J2021+4026 is a remarkable $\gamma$-ray pulsar exhibiting repeated transitions between high $\gamma$-ray flux (HGF) and low $\gamma$-ray flux (LGF) states. With 17-yr Fermi-LAT monitoring, we reveal persistent secular evolution and enhanced spin-down rate variability ... | https://arxiv.org/abs/2601.13940 | Academic Papers | svg |
fbaea0bb80767df5860fd064165de0ca564ae8a6625d9ce9d32b619c12564073 | 2026-01-21T00:00:00-05:00 | Rotational enhancement and stability of protoquark stars during thermal evolution | arXiv:2601.13941v1 Announce Type: new Abstract: We present the first systematic study of rigidly rotating protoquark stars based on isentropic equations of state (EOS) within the density-dependent quark mass (DDQM) framework. Using a quasi-static equilibrium approach, we follow the Kelvin--Helmholtz evolution from hot,... | https://arxiv.org/abs/2601.13941 | Academic Papers | svg |
3e9f873e1382cd4761024e178044cc99b164950e057c9977f976a021194849db | 2026-01-21T00:00:00-05:00 | Optimising gravitational-wave sky maps for pulsar timing arrays | arXiv:2601.13957v1 Announce Type: new Abstract: Pulsar timing arrays (PTAs) have recently reported compelling evidence for the presence of a gravitational-wave background signal. Mapping the gravitational-wave background is key to understanding how it is formed, since anisotropy is a tracer for, for example, a supermas... | https://arxiv.org/abs/2601.13957 | Academic Papers | svg |
63dfcb8ec0abe4836f9a2b7f83ad0b447195e0a6f4b8eb53339fcfc3f14e258a | 2026-01-21T00:00:00-05:00 | X-ray Analysis and Photon-transport Simulations of SMC X-1: A Warped-disc Origin of the Superorbital Modulation | arXiv:2601.13978v1 Announce Type: new Abstract: The luminous accreting pulsar SMC X-1 is an appropriate target to explore the accretion dynamics. SMC X-1 shows unique quasi-periodic flux variability of 40-65$\,$days known as superorbital modulation. To constrain the accretion structure of SMC X-1 based on timing and sp... | https://arxiv.org/abs/2601.13978 | Academic Papers | svg |
19e38cc0566b73e399099f09b87037cc995f6769cc5b94f853cdea536d823b05 | 2026-01-21T00:00:00-05:00 | Discovery and characterisation of two exoplanets orbiting the metal-poor, solar-type star TOI-5788 with TESS, CHEOPS, and HARPS-N | arXiv:2601.14045v1 Announce Type: new Abstract: We present the discovery and characterisation of two transiting exoplanets orbiting the metal-poor, solar-type star TOI-5788. From our analysis of six \textit{TESS} sectors and a dedicated \textit{CHEOPS} programme, we identify an inner planet (TOI-5788~b; $P = 6.340758\p... | https://arxiv.org/abs/2601.14045 | Academic Papers | svg |
9310abe228de49e886ecd00742ffd57712271022da7f6cdffc5088bc94bb4690 | 2026-01-21T00:00:00-05:00 | Unveiling Hidden Clustering: An Unsupervised Machine Learning Study of Repeating FRB 20220912A | arXiv:2601.14065v1 Announce Type: new Abstract: Fast Radio Bursts (FRBs) are millisecond-duration radio transients of extragalactic origin. Classifying repeating FRBs is essential for understanding their emission mechanisms, but remains challenging due to their short durations, high variability, and increasing data vol... | https://arxiv.org/abs/2601.14065 | Academic Papers | svg |
a630c5ea67c78f0b8987e73e0fb31685174255b56fff4b4f937c6b0c367c6d82 | 2026-01-21T00:00:00-05:00 | RV$\times$TESS I: Modeling Asteroseismic Signals with Simultaneous Photometry and RVs | arXiv:2601.14076v1 Announce Type: new Abstract: Detecting small planets via the radial velocity method remains challenged by signals induced by stellar variability, versus the effects of the planet(s). Here, we explore using Gaussian Process (GP) regression with Transiting Exoplanet Survey Satellite (TESS) photometry i... | https://arxiv.org/abs/2601.14076 | Academic Papers | svg |
a943a268da4d6d8f5fd9b722471604c5519f0820a42123cf09e49967cf22b3af | 2026-01-21T00:00:00-05:00 | The JEM-EUSO Collaboration: Contributions to the 39th International Cosmic Ray Conference (ICRC2025) | arXiv:2601.14107v1 Announce Type: new Abstract: This is a collection of papers presented by the JEM-EUSO Collaboration at the 39th International Cosmic Ray Conference (ICRC 2025) (Geneva, Switzerland, July 14--24, 2025). | https://arxiv.org/abs/2601.14107 | Academic Papers | svg |
2a3f9a4030a1edee37ab6f104cb2e4401e6b75b51a6bf732ff0f90b79d8e5185 | 2026-01-21T00:00:00-05:00 | Accretion flow around Kerr metric in the infra-red limit of asymptotically safe gravity | arXiv:2601.14113v1 Announce Type: new Abstract: We investigate accretion disk dynamics and the formation of quasi-periodic oscillations (QPOs) in the infrared limit around Kerr-like black holes in asymptotically safe gravity. Relativistic hydrodynamic solutions of Bondi-Hoyle-Lyttleton (BHL) accretion reveal that quant... | https://arxiv.org/abs/2601.14113 | Academic Papers | svg |
03ea92fc10a1ff633c15bf495c070a8914259e2893c9626b763f63f9a782eb4d | 2026-01-21T00:00:00-05:00 | Minutes-long soft X-ray prompt emission from a compact object merger | arXiv:2601.14137v1 Announce Type: new Abstract: Compact object mergers are multi-messenger sources and progenitors of some gamma-ray bursts (GRBs), primarily understood by gamma-ray observations, while poorly constrained in the prompt low-energy phase. A long-lasting X-ray emission was discussed as afterglows following... | https://arxiv.org/abs/2601.14137 | Academic Papers | svg |
552f2bd04eceffd1d3d77bc769d7458eb528073abd164fd35a4042d9c89eaf3b | 2026-01-21T00:00:00-05:00 | A multi-wavelength study of the 2025 low state of the intermediate polar BG CMi | arXiv:2601.14156v1 Announce Type: new Abstract: We present multi-wavelength observations of the first recorded low state of the intermediate polar BG CMi. Optical monitoring of the source by members of the American Association of Variable Star Observers reveals a decrease of ~0.5 mag that lasted ~50 d in early 2025. Du... | https://arxiv.org/abs/2601.14156 | Academic Papers | svg |
77aa65a26f34cfdadcd6504af8fa53860eb7c049c5b2ba51900e90043c19d1a5 | 2026-01-21T00:00:00-05:00 | Pre-computed aerosol extinction, scattering and asymmetry grids for scalable atmospheric retrievals | arXiv:2601.14177v1 Announce Type: new Abstract: The unprecedented wavelength coverage and sensitivity of the James Webb Space Telescope (JWST) permits to measure the absorption features of a wide range of condensate species from Silicates to Titan tholins. Atmospheric retrievals are uniquely suited to analyse these dat... | https://arxiv.org/abs/2601.14177 | Academic Papers | svg |
7cfaa9cb51ea66a455669b4d7289df3f7afcb10a050b1cbc1096222a079185a8 | 2026-01-21T00:00:00-05:00 | Dynamical mass of a solar-like oscillator at the main-sequence turnoff from Gaia astrometry & ground-based spectroscopy | arXiv:2601.14197v1 Announce Type: new Abstract: Asteroseismology is widely used for precise determining of masses of solar-like oscillating stars by performing individual-frequency modeling or applying homological scaling relations. However, these methods lack dynamical validation on the main sequence due to the absenc... | https://arxiv.org/abs/2601.14197 | Academic Papers | svg |
e7168551f597f7b8ae5e05844a16ec9f9bfffdc3573b9089b8da138929d56c5e | 2026-01-21T00:00:00-05:00 | The PAIRS project: a global formation model for planets in binaries. I. Effect of disc truncation on the growth of S-type planets | arXiv:2601.14214v1 Announce Type: new Abstract: Binary stars are as common as single stars. The number of detected planets orbiting binaries is rapidly increasing thanks to the synergy between transit surveys, Gaia and high-resolution direct imaging campaigns. However, global planet formation models around binary stars... | https://arxiv.org/abs/2601.14214 | Academic Papers | svg |
1b4d5732a07aa468dc0d67040b75eac22e939bf357a1e1dd8d8e0f58d66823ec | 2026-01-21T00:00:00-05:00 | The PAIRS project: a global formation model for planets in binaries. II. Gravitational perturbation effects from secondary stars | arXiv:2601.14215v1 Announce Type: new Abstract: Roughly half of Sun-like stars have at least one stellar companion, whereas it is widely assumed that most known exoplanets orbit single stars, largely due to observational biases. However, astrometric surveys, direct imaging, and speckle interferometry are steadily incre... | https://arxiv.org/abs/2601.14215 | Academic Papers | svg |
e90eec27746f21b58c0f9371da635dda9b3a065d98fc835bae7d019a0b770dcf | 2026-01-21T00:00:00-05:00 | The [Fe XIII] Infrared 10747 Angstrom and 10798 Angstrom Lines in Novae | arXiv:2601.14218v1 Announce Type: new Abstract: The forbidden lines of [Fe XIII] at 10,747 Angstrom and 10,798 Angsrtom are among the most prominent lines in the near-infrared spectrum of the solar corona. They have been used routinely, both outside and during eclipses, as sensitive probes of the electron density and p... | https://arxiv.org/abs/2601.14218 | Academic Papers | svg |
59828e3d2cf4b3096fb10b26942be156b4ce7ca861d0914a217f56de7fc3513a | 2026-01-21T00:00:00-05:00 | Probing AGN duty cycle and cluster-driven morphology in a giant episodic radio galaxy | arXiv:2601.14219v1 Announce Type: new Abstract: The evolution of radio jet morphology and its energetics is significantly influenced by the environment in which the host galaxy resides. As giant radio galaxies (GRGs) often extend to the scale of entire galaxy clusters ($\sim$Mpc) and beyond, they are a suitable class o... | https://arxiv.org/abs/2601.14219 | Academic Papers | svg |
e702cf4c98058b18777ddf33ada1a26e4270da856d6fd619096846a25b1879f0 | 2026-01-21T00:00:00-05:00 | Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension | arXiv:2601.14222v1 Announce Type: new Abstract: The persistent Hubble tension and the lack of a fundamental explanation for dark energy motivate the exploration of alternative mechanisms capable of reproducing late-time cosmic acceleration. In this work, we revisit gravitationally induced particle creation as a phenome... | https://arxiv.org/abs/2601.14222 | Academic Papers | svg |
237b029a856a616c47a016bef04e5c4e8d56b07026fb85cbc3bf9e47c1926c48 | 2026-01-21T00:00:00-05:00 | Decoupling of large-scale, adiabatic inflationary perturbations from enhanced small-scale modes at one-loop | arXiv:2601.14229v1 Announce Type: new Abstract: We reconsider back-reaction from large amplitude, short-scale perturbations onto a long wavelength adiabatic mode. In a loop expansion of the long-mode power spectrum, this back-reaction appears first at 1-loop. Due to the separation between the long and short scales, the... | https://arxiv.org/abs/2601.14229 | Academic Papers | svg |
0880900c04e0e1016d90205bca44b4dedd0acd2031b999649d196753a404b353 | 2026-01-21T00:00:00-05:00 | Opportunities in AI/ML for the Rubin LSST Dark Energy Science Collaboration | arXiv:2601.14235v1 Announce Type: new Abstract: The Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) will produce unprecedented volumes of heterogeneous astronomical data (images, catalogs, and alerts) that challenge traditional analysis pipelines. The LSST Dark Energy Science Collaboration (DESC) aim... | https://arxiv.org/abs/2601.14235 | Academic Papers | svg |
b602a538cad1c1bc59204d93179e6d0f40a8bfbc582fd6ffb7612d23db6f7a7f | 2026-01-21T00:00:00-05:00 | A Quenched and Relatively Isolated Dwarf Galaxy in the Local Volume | arXiv:2601.14248v1 Announce Type: new Abstract: An increasing number of discoveries of isolated and quenched dwarf galaxies are challenging the idea that the present-day local environment of low-mass systems is the main determinant of their quenching. We present new Hubble Space Telescope (HST) data of one such system,... | https://arxiv.org/abs/2601.14248 | Academic Papers | svg |
ce4a72cd04594173982fab520841366ca842feb56b43fb829ec4ad76057a94dc | 2026-01-21T00:00:00-05:00 | Using observations of escaping H/He to constrain the atmospheric composition of sub-Neptunes | arXiv:2601.14254v1 Announce Type: new Abstract: The internal composition of sub-Neptunes remains a prominent unresolved question in exoplanetary science. We present a technique to place constraints on envelope mean molecular weight that utilises observations of escaping hydrogen or helium exospheres. This method is bas... | https://arxiv.org/abs/2601.14254 | Academic Papers | svg |
7f1f3821510408c238dad7853c82109c84f5a4ae855204e1d6ea4af4f6b05928 | 2026-01-21T00:00:00-05:00 | A self-consistent explanation of the MeV line in GRB 221009A unveils a dense circum-stellar medium | arXiv:2601.14257v1 Announce Type: new Abstract: GRB~221009A has been the brightest gamma-ray burst (GRB) observed to date, and its afterglow has been characterised with unprecedented detail at TeV energies by LHAASO. Quite puzzlingly, it is also the most energetic GRB known. Among the riddles posed by this mysterious s... | https://arxiv.org/abs/2601.14257 | Academic Papers | svg |
70a1747660859047f4ad171d933f510201b04a38b15cf4a8585f269cb04f6bc4 | 2026-01-21T00:00:00-05:00 | Probing super-heavy dark matter with ultra-high-energy gamma rays | arXiv:2601.11703v1 Announce Type: cross Abstract: We refine the constraints on the lifetime of decaying super-heavy dark matter particles (SHDM), with masses ranging from $10^7$ to $10^{15}$ GeV, by analyzing ultra-high-energy (UHE) gamma-ray data. Our approach involves an accurate comparison of the primary gamma-ray e... | https://arxiv.org/abs/2601.11703 | Academic Papers | svg |
d39e4e5dc0b7107a8b3c8825d3e52d605fa41ff65fe480a6a2bfae051a267bd7 | 2026-01-21T00:00:00-05:00 | Stimulated radiation from superradiant scalar cloud in scalar-tensor theory | arXiv:2601.11988v1 Announce Type: cross Abstract: Scalar-tensor theories predict fundamental scalar fields of considerable interest in astrophysics and cosmology. We investigate the superradiant instability of scalar clouds around Kerr black holes, showing that stimulated decay generates detectable electromagnetic sign... | https://arxiv.org/abs/2601.11988 | Academic Papers | svg |
0c5fa1261d9ce8241746b914b81c11153e1bcf708e134c451ab2b9f9136be459 | 2026-01-21T00:00:00-05:00 | The gravitational energy-momentum pseudo-tensor in $f(Q)$ non-metric gravity | arXiv:2601.12088v1 Announce Type: cross Abstract: We derive the affine tensor associated with the energy and momentum densities of both gravitational and matter fields, the complex pseudo-tensor, for $f(Q)$ non-metric gravity, the straightforward extension of Symmetric Teleparallel Equivalent of General Relativity (STE... | https://arxiv.org/abs/2601.12088 | Academic Papers | svg |
dd4e3f8ae8819a65d1380009d6e73967aa8d7d5381a9969ebe576088cac1deff | 2026-01-21T00:00:00-05:00 | Forbidden dark matter assisted by first-order phase transition and associated gravitational waves | arXiv:2601.12319v1 Announce Type: cross Abstract: We propose a simple yet testable framework for light fermion dark matter (DM) with mass in the MeV--GeV range, charged under a dark $U(1)_D$ gauge symmetry. The $U(1)_D$ is spontaneously broken by a scalar field $\Phi$, giving mass to the dark gauge boson $X_D$. The dom... | https://arxiv.org/abs/2601.12319 | Academic Papers | svg |
80aecfd5693948b5a2d2fb1dcf32f34105af7a6648cd2cf4b5a753b49f985599 | 2026-01-21T00:00:00-05:00 | Anisotropic Collective Excitations of Bose Gases in Modified Newtonian Dynamics | arXiv:2601.12848v1 Announce Type: cross Abstract: Collective excitations are fundamental in quantum many-body physics, yet their spectra have traditionally been studied within Newtonian dynamics. In this Letter, we investigate collective excitations in Bose gases under Modified Newtonian Dynamics (MOND). We derive an a... | https://arxiv.org/abs/2601.12848 | Academic Papers | svg |
e8819c3188716338e5b4cb9fd19a350f5012c6852ec66f744d86e77430ad7692 | 2026-01-21T00:00:00-05:00 | Baryon-dark matter coincidence in Randall-Sundrum Model | arXiv:2601.13315v1 Announce Type: cross Abstract: Within the framework of the extra-dimensional Randall-Sundrum set-up, we investigate the freeze-in production of Standard Model (SM) gauge-singlet scalar, fermionic, and massive vector dark matter (DM). Assuming that both the DM and SM fields reside on the IR brane and ... | https://arxiv.org/abs/2601.13315 | Academic Papers | svg |
d9e3f8a4a3f6cae24e8d0470ff33451ff9bafabc4a6aac115af68094e740137a | 2026-01-21T00:00:00-05:00 | Universal Dense-Matter Trace Anomaly Inferred from Collective Flow in Heavy-Ion Collisions and Global Properties of Neutron Stars | arXiv:2601.13374v1 Announce Type: cross Abstract: The trace anomaly of dense matter, $\Delta \equiv 1/3 - P/\varepsilon$, defined in terms of the ratio of pressure $P$ to energy density $\varepsilon$, quantifies deviations from conformal symmetry and plays a central role in both the hydrodynamic response and gravitatio... | https://arxiv.org/abs/2601.13374 | Academic Papers | svg |
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