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we report a new search of weakly interacting massive particles (wimps) using the combined low background data sets in 2016 and 2017 from the pandax-ii experiment in china. the latest data set contains a new exposure of 77.1 live day, with the background reduced to a level of 0.8$\times10^{-3}$ evt/kg/day, improved by a... | dark matter results from 54-ton-day exposure of pandax-ii experiment |
the very large array sky survey (vlass) is a synoptic, all-sky radio sky survey with a unique combination of high angular resolution (≈2"5), sensitivity (a 1σ goal of 70 μjy/beam in the coadded data), full linear stokes polarimetry, time domain coverage, and wide bandwidth (2-4 ghz). the first observations began in 201... | the karl g. jansky very large array sky survey (vlass). science case and survey design |
recent measurements of the cosmic microwave background (cmb) anisotropies by planck provide a sensitive probe of dark matter annihilation during the cosmic dark ages, and specifically constrain the annihilation parameter feff⟨σ v ⟩/mχ. using new results (paper ii) for the ionization produced by particles injected at ar... | indirect dark matter signatures in the cosmic dark ages. i. generalizing the bound on s -wave dark matter annihilation from planck results |
we measure cosmic weak lensing shear power spectra with the subaru hyper suprime-cam (hsc) survey first-year shear catalog covering 137 deg2 of the sky. thanks to the high effective galaxy number density of ∼17 arcmin-2, even after conservative cuts such as a magnitude cut of i < 24.5 and photometric redshift cut of... | cosmology from cosmic shear power spectra with subaru hyper suprime-cam first-year data |
local determinations of the hubble constant h0 favor a higher value than planck based on cosmic microwave background and λ cold dark matter (λ cdm ). through a model-independent expansion, we show that low redshift (z ≲0.7 ) data comprising baryon acoustic oscillations, cosmic chronometers, and type ia supernovae have ... | hubble sinks in the low-redshift swampland |
more than three-quarters of the baryonic content of the universe resides in a highly diffuse state that is difficult to detect, with only a small fraction directly observed in galaxies and galaxy clusters1,2. censuses of the nearby universe have used absorption line spectroscopy3,4 to observe the `invisible' baryons, b... | a census of baryons in the universe from localized fast radio bursts |
we present the first full release of a survey of the 150 mhz radio sky, observed with the giant metrewave radio telescope (gmrt) between april 2010 and march 2012 as part of the tifr gmrt sky survey (tgss) project. aimed at producing a reliable compact source survey, our automated data reduction pipeline efficiently pr... | the gmrt 150 mhz all-sky radio survey. first alternative data release tgss adr1 |
cosmic inflation provides a window to the highest energy densities accessible in nature, far beyond those achievable in any realistic terrestrial experiment. theoretical insights into the inflationary era and its observational probes may therefore shed unique light on the physical laws underlying our universe. this whi... | inflation: theory and observations |
we present results from the search for a stochastic gravitational-wave background (gwb) as predicted by the theory of general relativity using six radio millisecond pulsars from the data release 2 (dr2) of the european pulsar timing array (epta) covering a timespan up to 24 yr. a gwb manifests itself as a long-term low... | common-red-signal analysis with 24-yr high-precision timing of the european pulsar timing array: inferences in the stochastic gravitational-wave background search |
in this data release from the ongoing low-frequency array (lofar) two-metre sky survey we present 120-168 mhz images covering 27% of the northern sky. our coverage is split into two regions centred at approximately 12h45m +44°30' and 1h00m +28°00' and spanning 4178 and 1457 square degrees respectively. the images were ... | the lofar two-metre sky survey. v. second data release |
this work and its companion paper, amon et al. [phys. rev. d 105, 023514 (2022), 10.1103/physrevd.105.023514], present cosmic shear measurements and cosmological constraints from over 100 million source galaxies in the dark energy survey (des) year 3 data. we constrain the lensing amplitude parameter s8≡σ8√{ωm/0.3 } at... | dark energy survey year 3 results: cosmology from cosmic shear and robustness to modeling uncertainty |
much of the structure of cosmological correlators is controlled by their singularities, which in turn are fixed in terms of flat-space scattering amplitudes. an important challenge is to interpolate between the singular limits to determine the full correlators at arbitrary kinematics. this is particularly relevant beca... | linking the singularities of cosmological correlators |
we show that the seesaw mechanisms that exhibit right-handed neutrino mass-dependent nonstandard postinflationary cosmology make blue-tilted inflationary gravitational waves (gws) compatible with the recent findings of nanohertz stochastic gw background by the pulsar-timing arrays (ptas) for high reheating temperatures... | fingerprints of gev scale right-handed neutrinos on inflationary gravitational waves and pta data |
we provide a review on the state-of-the-art of gravitational waves induced by primordial fluctuations, so-called induced gravitational waves. we present the intuitive physics behind induced gravitational waves and we revisit and unify the general analytical formulation. we then present general formulas in a compact for... | scalar induced gravitational waves review |
we present the first event-horizon-scale images and spatiotemporal analysis of sgr a* taken with the event horizon telescope in 2017 april at a wavelength of 1.3 mm. imaging of sgr a* has been conducted through surveys over a wide range of imaging assumptions using the classical clean algorithm, regularized maximum lik... | first sagittarius a* event horizon telescope results. iii. imaging of the galactic center supermassive black hole |
atmospheric aerosols and their effect on clouds are thought to be important for anthropogenic radiative forcing of the climate, yet remain poorly understood. globally, around half of cloud condensation nuclei originate from nucleation of atmospheric vapours. it is thought that sulfuric acid is essential to initiate mos... | ion-induced nucleation of pure biogenic particles |
1. inflation: theory and observations; 2. inflation in effective field theory; 3. elements of string theory; 4. what is string inflation?; 5. examples of string inflation; 6. conclusions and outlook; appendix a. mathematical preliminaries; appendix b. the effective theory of inflation; appendix c. primordial perturbati... | inflation and string theory |
we use 26 ×106 galaxies from the dark energy survey (des) year 1 shape catalogs over 1321 deg2 of the sky to produce the most significant measurement of cosmic shear in a galaxy survey to date. we constrain cosmological parameters in both the flat λ cdm and the w cdm models, while also varying the neutrino mass density... | dark energy survey year 1 results: cosmological constraints from cosmic shear |
the recent planck legacy 2018 release has confirmed the presence of an enhanced lensing amplitude in cosmic microwave background power spectra compared with that predicted in the standard λ cold dark matter model, where λ is the cosmological constant. a closed universe can provide a physical explanation for this effect... | planck evidence for a closed universe and a possible crisis for cosmology |
the planck full mission cosmic microwave background (cmb) temperature and e-mode polarization maps are analysed to obtain constraints on primordial non-gaussianity (ng). using three classes of optimal bispectrum estimators - separable template-fitting (ksw), binned, and modal - we obtain consistent values for the primo... | planck 2015 results. xvii. constraints on primordial non-gaussianity |
cosmological first-order phase transitions (1stopts) are said to be strongly supercooled when the nucleation temperature is much smaller than the critical temperature. these are often encountered in theories that admit a nearly scale-invariant potential, for which the bounce action decreases only logarithmically with t... | primordial black holes from supercooled phase transitions |
we investigate the potential for the elisa space-based interferometer to detect the stochastic gravitational wave background produced by strong first-order cosmological phase transitions. we discuss the resulting contributions from bubble collisions, magnetohydrodynamic turbulence, and sound waves to the stochastic bac... | science with the space-based interferometer elisa. ii: gravitational waves from cosmological phase transitions |
direct dark matter detection experiments based on a liquid xenon target are leading the search for dark matter particles with masses above ∼5 gev /c2, but have limited sensitivity to lighter masses because of the small momentum transfer in dark matter-nucleus elastic scattering. however, there is an irreducible contrib... | search for light dark matter interactions enhanced by the migdal effect or bremsstrahlung in xenon1t |
we study the fundamentals of quantum field theory on a rigid de sitter space. we show that the perturbative expansion of late-time correlation functions to all orders can be equivalently generated by a non-unitary lagrangian on a euclidean ads geometry. this finding simplifies dramatically perturbative computations, as... | analyticity and unitarity for cosmological correlators |
the strong discrepancy between local and early-time (inverse distance ladder) estimates of the hubble constant h0 could be pointing towards new physics beyond the concordance λ cdm model. several attempts to address this tension through new physics rely on extended cosmological models, featuring extra free parameters b... | new physics in light of the h0 tension: an alternative view |
in the light of the evidence of a gravitational wave background from the nanograv 15yr data set, we reconsider the split majoron model as a new physics extension of the standard model able to generate a needed contribution to solve the current tension between the data and the standard interpretation in terms of inspira... | the split majoron model confronts the nanograv signal |
we discuss the ability of a dark fluid becoming relevant around the time of matter-radiation equality to significantly relieve the tension between local measurements of the hubble constant and cosmic microwave background (cmb) inference, within the λ cdm model. we show that the gravitational impact of acoustic oscillat... | acoustic dark energy: potential conversion of the hubble tension |
the data recently released by the north american nanohertz observatory for gravitational waves provides compelling evidence supporting the existence of a stochastic signal that aligns with a gravitational-wave background. we show this signal can be the scalar-induced gravitational waves from the higgs inflation model w... | exploring the nanograv signal and planet-mass primordial black holes through higgs inflation |
we present two new lagrangian methods for hydrodynamics, in a systematic comparison with moving-mesh, smoothed particle hydrodynamics (sph), and stationary (non-moving) grid methods. the new methods are designed to simultaneously capture advantages of both sph and grid-based/adaptive mesh refinement (amr) schemes. they... | a new class of accurate, mesh-free hydrodynamic simulation methods |
all attempts to directly detect particle dark matter (dm) scattering on nuclei suffer from the partial or total loss of sensitivity for dm masses in the gev range or below. we derive novel constraints from the inevitable existence of a subdominant, but highly energetic, component of dm generated through collisions with... | novel direct detection constraints on light dark matter |
we present cluster counts and corresponding cosmological constraints from the planck full mission data set. our catalogue consists of 439 clusters detected via their sunyaev-zeldovich (sz) signal down to a signal-to-noise ratio of 6, and is more than a factor of 2 larger than the 2013 planck cluster cosmology sample. t... | planck 2015 results. xxiv. cosmology from sunyaev-zeldovich cluster counts |
we investigate the explicit role of negative local non-gaussianity, $f_{\rm nl}$, in suppressing the abundance of primordial black holes (pbhs) in the single-field model of galileon inflation. pbh formation requires significantly enhancing the scalar power spectrum, which greatly affects their abundance. the associated... | primordial non-gaussianity as a saviour for pbh overproduction in sigws generated by pulsar timing arrays for galileon inflation |
a supermassive black hole, obscured by cosmic dust, powers the nearby active galaxy ngc 1068. neutrinos, which rarely interact with matter, could provide information on the galaxy's active core. we searched for neutrino emission from astrophysical objects using data recorded with the icecube neutrino detector between 2... | evidence for neutrino emission from the nearby active galaxy ngc 1068 |
we review the paradigm of holographic dark energy (hde), which arises from a theoretical attempt of applying the holographic principle (hp) to the dark energy (de) problem. making use of the hp and the dimensional analysis, we derive the general formula of the energy density of hde. then, we describe the properties of ... | holographic dark energy |
the recent results from the pulsar timing array (pta) collaborations show the first evidence for the detection of a stochastic background of gravitational waves at the nhz frequencies. this discovery has profound implications for the physics of both the late and the early universe. in fact, together with the interpreta... | axionic domain walls at pulsar timing arrays: qcd bias and particle friction |
new results are reported from the operation of the pico-60 dark matter detector, a bubble chamber filled with 52 kg of c3 f8 located in the snolab underground laboratory. as in previous pico bubble chambers, pico -60 c 3f8 exhibits excellent electron recoil and alpha decay rejection, and the observed multiple-scatterin... | dark matter search results from the pico -60 c 3f8 bubble chamber |
the cosmic evolution survey (cosmos) has become a cornerstone of extragalactic astronomy. since the last public catalog in 2015, a wealth of new imaging and spectroscopic data have been collected in the cosmos field. this paper describes the collection, processing, and analysis of these new imaging data to produce a ne... | cosmos2020: a panchromatic view of the universe to z∼10 from two complementary catalogs |
we present the data release and data reduction process for the epoch 1 nircam observations for the cosmic evolution early release science survey (ceers). these data consist of nircam imaging in six broadband filters (f115w, f150w, f200w, f277w, f356w and f444w) and one medium-band filter (f410m) over four pointings, ob... | ceers epoch 1 nircam imaging: reduction methods and simulations enabling early jwst science results |
chirality—the geometric property of objects that do not coincide with their mirror image—is found in nature, for example, in molecules, crystals, galaxies and life forms. in quantum field theory, the chirality of a massless particle is defined by whether the directions of its spin and motion are parallel or antiparalle... | observation of unconventional chiral fermions with long fermi arcs in cosi |
we consider the production of secondary gravity waves in galileon inflation with an ultra-slow roll (usr) phase and show that the spectrum of scalar-induced gravitational waves (sigws) in this case is consistent with the recent nanograv 15-year data and with sensitivities of other ground and space-based missions, lisa,... | scalar induced gravity waves from ultra slow-roll galileon inflation |
the exomol database (www.exomol.com) provides extensive line lists of molecular transitions which are valid over extended temperatures ranges. the status of the current release of the database is reviewed and a new data structure is specified. this structure augments the provision of energy levels (and hence transition... | the exomol database: molecular line lists for exoplanet and other hot atmospheres |
recently, the cdf collaboration has reported the precise measurement of the w boson mass, mw = 80433.5 ± 9.4 mev , based on 8.8 fb-1 of √{ s } = 1.96 tev p p bar collision data from the cdf ii detector at the fermilab tevatron. this is about 7σ away from the standard model prediction, mwsm = 80357 ± 6 mev . such a larg... | singlet extensions and w boson mass in light of the cdf ii result |
the standard λ cold dark matter cosmological model provides a wonderful fit to current cosmological data, but a few statistically significant tensions and anomalies were found in the latest data analyses. while these anomalies could be due to the presence of systematic errors in the experiments, they could also indicat... | cosmology intertwined iii: fσ8 and s8 |
understanding the reason for the observed accelerated expansion of the universe represents one of the fundamental open questions in physics. in cosmology, a classification has emerged among physical models for this acceleration, distinguishing between dark energy and modified gravity. in this review, we provide a brief... | dark energy versus modified gravity |
we analyze cosmic superstring models in light of nanograv 15-year pulsar timing data. a good fit is found for a string tension g μ ∼10-12- 10-11 and a string intercommutation probability p ∼10-3- 10-1. extrapolation to higher frequencies assuming standard big bang cosmology is compatible at the 68% cl with the current ... | cosmic superstrings revisited in light of nanograv 15-year data |
supermassive black hole binaries source gravitational waves measured by pulsar timing arrays. the frequency spectrum of this stochastic background is predicted more precisely than its amplitude. we argue that dark matter friction can suppress the spectrum around nhz frequencies, where it is measured, allowing to derive... | probing the dark matter density with gravitational waves from super-massive binary black holes |
deploying \textit{multiple sharp transitions} (msts) under a unified framework, we investigate the formation of primordial black holes (pbhs) and the production of scalar induced gravitational waves (sigws) by incorporating one-loop corrected renormalized-resummed scalar power spectrum. with effective sound speed param... | evading no-go for pbh formation and production of sigws using multiple sharp transitions in eft of single field inflation |
this article is intended to review the recent developments in the horndeski theory and its generalization, which provide us with a systematic understanding of scalar-tensor theories of gravity as well as a powerful tool to explore astrophysics and cosmology beyond general relativity. this review covers the generalized ... | horndeski theory and beyond: a review |
we demonstrate that the recently announced signal for a stochastic gravitational wave background (sgwb) from pulsar timing array (pta) observations, if attributed to new physics, is compatible with primordial gw production due to axion-gauge dynamics during inflation. more specifically we find that axion-$u(1)$ models ... | axion-gauge dynamics during inflation as the origin of pulsar timing array signals and primordial black holes |
the last decade has seen unprecedented effort in dark matter model building at all mass scales coupled with the design of numerous new detection strategies. transformative advances in quantum technologies have led to a plethora of new high-precision quantum sensors and dark matter detection strategies for ultralight ($... | new horizons: scalar and vector ultralight dark matter |
big bang nucleosynthesis (bbn) describes the production of the lightest nuclides via a dynamic interplay among the four fundamental forces during the first seconds of cosmic time. a brief overview of the essentials of this physics is given, and new calculations presented of light-element abundances through 6li and 7li,... | big bang nucleosynthesis: present status |
the glass-jwst early release science (hereafter glass-jwst-ers) program will obtain and make publicly available the deepest extragalactic data of the ers campaign. it is primarily designed to address two key science questions, namely, "what sources ionized the universe and when?" and "how do baryons cycle through galax... | the glass-jwst early release science program. i. survey design and release plans |
we present the first limits on inelastic electron-scattering dark matter and dark photon absorption using a prototype supercdms detector having a charge resolution of 0.1 electron-hole pairs (cdms hvev, a 0.93 g cdms high-voltage device). these electron-recoil limits significantly improve experimental constraints on da... | first dark matter constraints from a supercdms single-charge sensitive detector |
lux-zeplin (lz) is a next-generation dark matter direct detection experiment that will operate 4850 feet underground at the sanford underground research facility (surf) in lead, south dakota, usa. using a two-phase xenon detector with an active mass of 7 tonnes, lz will search primarily for low-energy interactions with... | projected wimp sensitivity of the lux-zeplin dark matter experiment |
past studies have identified a spatially extended excess of ∼1-3 gev gamma rays from the region surrounding the galactic center, consistent with the emission expected from annihilating dark matter. we revisit and scrutinize this signal with the intention of further constraining its characteristics and origin. by applyi... | the characterization of the gamma-ray signal from the central milky way: a case for annihilating dark matter |
recently, pulsar timing array (pta) collaborations have detected a stochastic gravitational wave background (sgwb) at nano-hz frequencies, with domain wall networks (dws) proposed as potential sources. to be cosmologically viable, they must annihilate before dominating the universe energy budget, thus generating a sgwb... | domain wall interpretation of the pta signal confronting black hole overproduction |
we propose a new method towards distinguishing the dirac versus majorana nature of neutrino masses from the spectrum of gravitational waves (gws) associated with neutrino mass genesis. motivated by the principle of generating small neutrino masses without tiny yukawa couplings, we assume generic seesaw mechanisms for b... | towards distinguishing dirac from majorana neutrino mass with gravitational waves |
we review the advanced version of the kklt construction and pure $d=4$ de sitter supergravity, involving a nilpotent multiplet, with regard to various conjectures that de sitter state cannot exist in string theory. we explain why we consider these conjectures problematic and not well motivated, and why the recently pro... | the landscape, the swampland and the era of precision cosmology |
in 2017 april, the event horizon telescope (eht) observed the near-horizon region around the supermassive black hole at the core of the m87 galaxy. these 1.3 mm wavelength observations revealed a compact asymmetric ring-like source morphology. this structure originates from synchrotron emission produced by relativistic... | first m87 event horizon telescope results. vii. polarization of the ring |
we present full-sky maps of the cosmic microwave background (cmb) and polarized synchrotron and thermal dust emission, derived from the third set of planck frequency maps. these products have significantly lower contamination from instrumental systematic effects than previous versions. the methodologies used to derive ... | planck 2018 results. iv. diffuse component separation |
we consider a simple spherical model consisting of a schwarzschild black hole of mass m and a dark matter of mass δm around it. the general formula for the radius of black-hole shadow has been derived in this case. it is shown that the change of the shadow is not negligible, once the effective radius of the dark matter... | shadow of a black hole surrounded by dark matter |
the recent observations by pulsar timing array (pta) experiments suggest the existence of stochastic gravitational wave background in the nano-hz range. it can be a hint for the new physics and cosmic string is one of the promising candidates. in this paper, we study the implication of the pta result for cosmic strings... | nanohertz gravitational waves from cosmic strings and dark photon dark matter |
recently, the pulsar timing array (pta) collaborations have reported the evidence for a stochastic gravitational wave background (sgwb) at nano-hertz band. the spectrum of inflationary gravitational wave (igw) is unknown, which might exhibit different power law at different frequency-bands, thus if the pta signal is pr... | broken blue-tilted inflationary gravitational waves: a joint analysis of nanograv 15-year and bicep/keck 2018 data |
euclid is a mission of the european space agency that is designed to constrain the properties of dark energy and gravity via weak gravitational lensing and galaxy clustering. it will carry out a wide area imaging and spectroscopy survey (the euclid wide survey: ews) in visible and near-infrared bands, covering approxim... | euclid preparation. i. the euclid wide survey |
deriving the expansion history of the universe is a major goal of modern cosmology. to date, the most accurate measurements have been obtained with type ia supernovae (sne) and baryon acoustic oscillations (bao), providing evidence for the existence of a transition epoch at which the expansion rate changes from deceler... | a 6% measurement of the hubble parameter at z~0.45: direct evidence of the epoch of cosmic re-acceleration |
montepython is a parameter inference package for cosmology. we present the latest development of the code over the past couple of years. we explain, in particular, two new ingredients both contributing to improve the performance of metropolis-hastings sampling: an adaptation algorithm for the jumping factor, and a calc... | montepython 3: boosted mcmc sampler and other features |
xenonnt is a dark matter direct detection experiment, utilizing 5.9 t of instrumented liquid xenon, located at the infn laboratori nazionali del gran sasso. in this work, we predict the experimental background and project the sensitivity of xenonnt to the detection of weakly interacting massive particles (wimps). the e... | projected wimp sensitivity of the xenonnt dark matter experiment |
the curvature parameter tension between planck 2018, cosmic microwave background (cmb) lensing, and baryon acoustic oscillation (bao) data is measured using the suspiciousness statistic to be 2.5 - 3 σ . conclusions regarding the spatial curvature of the universe which stem from the combination of these data should the... | curvature tension: evidence for a closed universe |
pulsar timing array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millisecond radio pulsars. with the second data release of the european pulsar timing array, we focus on the most robust scenario, in which dark ma... | second data release from the european pulsar timing array: challenging the ultralight dark matter paradigm |
we present new constraints on sub-gev dark-matter particles scattering off electrons based on 6780.0 kg d of data collected with the darkside-50 dual-phase argon time projection chamber. this analysis uses electroluminescence signals due to ionized electrons extracted from the liquid argon target. the detector has a ve... | constraints on sub-gev dark-matter-electron scattering from the darkside-50 experiment |
in a six-year program started in 2014 july, the extended baryon oscillation spectroscopic survey (eboss) will conduct novel cosmological observations using the boss spectrograph at apache point observatory. these observations will be conducted simultaneously with the time domain spectroscopic survey (tdss) designed for... | the sdss-iv extended baryon oscillation spectroscopic survey: overview and early data |
we present the all-sky planck catalogue of sunyaev-zeldovich (sz) sources detected from the 29 month full-mission data. the catalogue (psz2) is the largest sz-selected sample of galaxy clusters yet produced and the deepest systematic all-sky surveyof galaxy clusters. it contains 1653 detections, of which 1203 are confi... | planck 2015 results. xxvii. the second planck catalogue of sunyaev-zeldovich sources |
fast radio bursts (frbs) are short pulses observed in the radio band from cosmological distances1. one class of models invokes soft gamma-ray repeaters (sgrs), or magnetars, as the sources of frbs2. some radio pulses have been observed from some magnetars3, but no frb-like events have been detected in association with ... | hxmt identification of a non-thermal x-ray burst from sgr j1935+2154 and with frb 200428 |
the wide field infrared survey telescope (wfirst) is a 2.4m space telescope with a 0.281 deg^2 field of view for near-ir imaging and slitless spectroscopy and a coronagraph designed for > 10^8 starlight suppresion. as background information for astro2020 white papers, this article summarizes the current design and a... | the wide field infrared survey telescope: 100 hubbles for the 2020s |
the first direct measurement of gravitational waves by the ligo and virgo collaborations has opened up new avenues to explore our universe. this white paper outlines the challenges and gains expected in gravitational-wave searches at frequencies above the ligo/virgo band, with a particular focus on ultra high-frequency... | challenges and opportunities of gravitational-wave searches at mhz to ghz frequencies |
when ultralight axion dark matter encounters a static magnetic field, it sources an effective electric current that follows the magnetic field lines and oscillates at the axion compton frequency. we propose a new experiment to detect this axion effective current. in the presence of axion dark matter, a large toroidal m... | broadband and resonant approaches to axion dark matter detection |
we present , a general-purpose bayesian analysis code aimed at models with complex internal interdependencies. without the need for specific code by the user, interdependencies between different stages of a model pipeline are exploited for sampling efficiency: intermediate results are automatically cached, and paramete... | cobaya: code for bayesian analysis of hierarchical physical models |
the evolution of the content of heavy elements in galaxies, the relative chemical abundances, their spatial distribution, and how these scale with various galactic properties, provide unique information on the galactic evolutionary processes across the cosmic epochs. in recent years major progress has been made in cons... | de re metallica: the cosmic chemical evolution of galaxies |
we present an up-to-date global analysis of data coming from neutrino oscillation and non-oscillation experiments, as available in april 2018, within the standard framework including three massive and mixed neutrinos. we discuss in detail the status of the three-neutrino (3 ν) mass-mixing parameters, both known and unk... | current unknowns in the three-neutrino framework |
the hubble constant (h0) tension between type ia supernovae (sne ia) and planck measurements ranges from 4 to 6σ. to investigate this tension, we estimate h0 in the λcdm and ${w}_{0}{w}_{a}$ cdm (cold dark matter) models by dividing the pantheon sample, the largest compilation of sne ia, into 3, 4, 20, and 40 bins. we ... | on the hubble constant tension in the sne ia pantheon sample |
the recent determination of the local value of the hubble constant by riess et al., 2016 (hereafter r16) is now 3.3 sigma higher than the value derived from the most recent cmb anisotropy data provided by the planck satellite in a λcdm model. here we perform a combined analysis of the planck and r16 results in an exten... | reconciling planck with the local value of h0 in extended parameter space |
we present the final sloan digital sky survey iv (sdss-iv) quasar catalog from data release 16 of the extended baryon oscillation spectroscopic survey (eboss). this catalog comprises the largest selection of spectroscopically confirmed quasars to date. the full catalog includes two subcatalogs (the current versions are... | the sloan digital sky survey quasar catalog: sixteenth data release |
the lofar two-metre sky survey (lotss) is an ongoing sensitive, high-resolution 120-168 mhz survey of the entire northern sky for which observations are now 20% complete. we present our first full-quality public data release. for this data release 424 square degrees, or 2% of the eventual coverage, in the region of the... | the lofar two-metre sky survey. ii. first data release |
we summarize our understanding of millisecond radio bursts from an extragalactic population of sources. fast radio bursts (frbs) occur at an extraordinary rate, thousands per day over the entire sky with radiation energy densities at the source about ten billion times larger than those from galactic pulsars. we survey ... | fast radio bursts: an extragalactic enigma |
we use 47 gravitational wave sources from the third ligo-virgo-kamioka gravitational wave detector gravitational wave transient catalog (gwtc-3) to estimate the hubble parameter h(z), including its current value, the hubble constant h 0. each gravitational wave (gw) signal provides the luminosity distance to the source... | constraints on the cosmic expansion history from gwtc-3 |
we report a detection of the baryon acousticoscillation (bao) feature in the flux-correlation function of the lyα forest of high-redshift quasars with a statistical significance of five standard deviations. the study uses 137 562 quasars in the redshift range 2.1 ≤ z ≤ 3.5 from the data release 11 (dr11) of the baryon ... | baryon acoustic oscillations in the lyα forest of boss dr11 quasars |
the diffuse galactic γ -ray emission, mainly produced via interactions between cosmic rays and the interstellar medium and/or radiation field, is a very important probe of the distribution, propagation, and interaction of cosmic rays in the milky way. in this letter, we report the measurements of diffuse γ rays from th... | measurement of ultra-high-energy diffuse gamma-ray emission of the galactic plane from 10 tev to 1 pev with lhaaso-km2a |
according to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. the microscope satellite, launched in april 2016, aims to test its validity at the 10-15 precision level, by measuring the force required to maintain two test masses (of titanium and platinum alloys) exactly i... | microscope mission: first results of a space test of the equivalence principle |
we report on the discovery of eight repeating fast radio burst (frb) sources found using the canadian hydrogen intensity mapping experiment (chime) telescope. these sources span a dispersion measure (dm) range of 103.5-1281 pc cm-3. they display varying degrees of activity: six sources were detected twice, another thre... | chime/frb discovery of eight new repeating fast radio burst sources |
supercdms snolab will be a next-generation experiment aimed at directly detecting low-mass particles (with masses ≤10 gev /c2 ) that may constitute dark matter by using cryogenic detectors of two types (hv and izip) and two target materials (germanium and silicon). the experiment is being designed with an initial sensi... | projected sensitivity of the supercdms snolab experiment |
new physics in the neutrino sector might be necessary to address anomalies between different neutrino oscillation experiments. intriguingly, it also offers a possible solution to the discrepant cosmological measurements of h0 and σ8. we show here that delaying the onset of neutrino free streaming until close to the epo... | neutrino puzzle: anomalies, interactions, and cosmological tensions |
we report direct-detection constraints on light dark matter particles interacting with electrons. the results are based on a method that exploits the extremely low levels of leakage current of the damic detector at snolab of 2 - 6 ×10-22a cm -2 . we evaluate the charge distribution of pixels that collect <10 e- for ... | constraints on light dark matter particles interacting with electrons from damic at snolab |
pulsar timing arrays gathered evidence of the presence of a gravitational wave background around nhz frequencies. if the gravitational wave background was induced by large and gaussian primordial fluctuations, they would then produce too many sub-solar mass primordial black holes. we show that if at the time of gravita... | scalar-induced gravitational wave interpretation of pta data: the role of scalar fluctuation propagation speed |
this paper describes the recommended solar forcing dataset for cmip6 and highlights changes with respect to cmip5. the solar forcing is provided for radiative properties, namely total solar irradiance (tsi), solar spectral irradiance (ssi), and the f10.7 index as well as particle forcing, including geomagnetic indices ... | solar forcing for cmip6 (v3.2) |
over recent decades, cosmological simulations of galaxy formation have been instrumental in advancing our understanding of structure and galaxy formation in the universe. these simulations follow the nonlinear evolution of galaxies, modelling a variety of physical processes over an enormous range of time and length sca... | cosmological simulations of galaxy formation |
we review the topic of 4d einstein-gauss-bonnet (4degb) gravity, which has been the subject of considerable interest over the past two years. our review begins with a general introduction to lovelock's theorem, and the subject of gauss-bonnet terms in the action for gravity. these areas are of fundamental importance fo... | the 4d einstein-gauss-bonnet theory of gravity: a review |
we perform a comprehensive cosmological study of the h0 tension between the direct local measurement and the model-dependent value inferred from the cosmic microwave background. with the recent measurement of h0 this tension has raised to more than 3 σ. we consider changes in the early time physics without modifying th... | the trouble with h0 |
we report the detection of new binary black hole merger events in the publicly available data from the second observing run of advanced ligo and advanced virgo (o2). the mergers were discovered using the new search pipeline described in venumadhav et al. [phys. rev. d 100, 023011 (2019), 10.1103/physrevd.100.023011] an... | new binary black hole mergers in the second observing run of advanced ligo and advanced virgo |
this letter reports on a cavity haloscope search for dark matter axions in the galactic halo in the mass range 2.81 - 3.31 μ ev . this search utilizes the combination of a low-noise josephson parametric amplifier and a large-cavity haloscope to achieve unprecedented sensitivity across this mass range. this search exclu... | extended search for the invisible axion with the axion dark matter experiment |
we present a tomographic cosmic shear analysis of the kilo-degree survey (kids) combined with the vista kilo-degree infrared galaxy survey. this is the first time that a full optical to near-infrared data set has been used for a wide-field cosmological weak lensing experiment. this unprecedented data, spanning 450 deg2... | kids+viking-450: cosmic shear tomography with optical and infrared data |
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