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we investigate interacting scenarios that belong to a wider class, since they include a dynamical dark energy component whose equation of state follows various one-parameter parametrizations. we confront them with the latest observational data from the cosmic microwave background, the joint light-curve sample from type... | interacting scenarios with dynamical dark energy: observational constraints and alleviation of the h0 tension |
we apply the effective field theory of large-scale structure to analyze the wcdm cosmological model. by using the full shape of the power spectrum and the bao post-reconstruction measurements from boss, the supernovae from pantheon, and a prior from bbn, we set the competitive cmb-independent limit w=-1.046-0.052+0.055... | limits on wcdm from the eftoflss with the pybird code |
the standard cosmological model is in the midst of a stress test, thanks to the tension between supernovae-based measurements of the hubble constant $h_{0}$ and inferences of its values from cosmic microwave background (cmb) anisotropies. numerous explanations for the present-day cosmic acceleration require the presenc... | cascading dark energy |
type ia supernovae (sne ia) were instrumental in establishing the acceleration of the universe's expansion. by virtue of their combination of distance reach, precision, and prevalence, they continue to provide key cosmological constraints, complementing other cosmological probes. individual sn surveys cover only over a... | union through unity: cosmology with 2,000 sne using a unified bayesian framework |
new light particles produced in supernovae can lead to additional energy loss and a consequent deficit in neutrino production in conflict with the neutrinos observed from supernova 1987a (sn1987a). contrary to the majority of previous sn1987a studies, we examine the impact of z' bosons, axions, and axion-like particles... | supernova muons: new constraints on z' bosons, axions and alps |
hyper-kamiokande (hk) is the next generation underground water cherenkov detector that builds on the highly successful super-kamiokande (sk) experiment. the 260,000-ton detector has an 8.4 times larger fiducial volume than its predecessor. hk's low energy threshold combined with the very large fiducial volume make the ... | hyper-kamiokande experiment: a snowmass white paper |
the deep underground neutrino experiment (dune) is a next-generation long-baseline neutrino oscillation experiment with a primary physics goal of observing neutrino and antineutrino oscillation patterns to precisely measure the parameters governing long-baseline neutrino oscillation in a single experiment, and to test ... | snowmass neutrino frontier: dune physics summary |
the gravitationally lensed supernova refsdal appeared in multiple images produced through gravitational lensing by a massive foreground galaxy cluster. after the supernova appeared in 2014, lens models of the galaxy cluster predicted that an additional image of the supernova would appear in 2015, which was subsequently... | constraints on the hubble constant from supernova refsdal's reappearance |
we present cosmological parameter constraints obtained from galaxy clusters identified by their sunyaev-zel’dovich effect signature in the 2500 square-degree south pole telescope sunyaev zel’dovich (spt-sz) survey. we consider the 377 cluster candidates identified at z\gt 0.25 with a detection significance greater than... | cosmological constraints from galaxy clusters in the 2500 square-degree spt-sz survey |
we present a new calibration of the peak absolute magnitude of type ia supernovae (sne ia) based on the surface brightness fluctuations (sbf) method, aimed at measuring the value of the hubble constant. we build a sample of calibrating anchors consisting of 24 sne hosted in galaxies that have sbf distance measurements.... | a new measurement of the hubble constant using type ia supernovae calibrated with surface brightness fluctuations |
we explore cosmological constraints on the sum of the three active neutrino masses mν in the context of dynamical dark energy (dde) models with equation of state (eos) parametrized as a function of redshift z by w (z )=w0+waz /(1 +z ) , and satisfying w (z )≥-1 for all z . we make use of cosmic microwave background dat... | constraints on the sum of the neutrino masses in dynamical dark energy models with w (z )≥-1 are tighter than those obtained in λ cdm |
the mismatch in the value of the hubble constant from low- and high-redshift observations may be recast as a discrepancy between the low- and high-redshift determinations of the luminosity of type ia supernovae, the latter featuring an absolute magnitude which is ≈0.2 mag lower. here, we propose that a rapid transition... | rapid transition of geff at zt≃0.01 as a possible solution of the hubble and growth tensions |
we investigate constraints on early dark energy (ede) using act dr4, spt-3g 2018, planck polarization, and restricted planck temperature data (at ℓ<650 ), finding a 3.3 σ preference (δ χ2=-16.2 for three additional degrees of freedom) for ede over λ cdm . the ede contributes a maximum fractional energy density of fe... | hints of early dark energy in planck, spt, and act data: new physics or systematics? |
motivated by the current status of cosmological observations and significant tensions in the estimated values of some key parameters assuming the standard λcdm model, we propose a simple but radical phenomenological emergent dark energy model where dark energy has no effective presence in the past and emerges at later ... | a simple phenomenological emergent dark energy model can resolve the hubble tension |
axion models with generation-dependent peccei-quinn charges can lead to flavor-changing neutral currents, thus motivating qcd axion searches at precision flavor experiments. we rigorously derive limits on the most general effective flavor-violating couplings from current measurements and assess their discovery potentia... | quark flavor phenomenology of the qcd axion |
the ordering of the neutrino masses is a crucial input for a deep understanding of flavor physics, and its determination may provide the key to establish the relationship among the lepton masses and mixings and their analogous properties in the quark sector. the extraction of the neutrino mass ordering is a data-driven... | neutrino mass ordering from oscillations and beyond: 2018 status and future prospects |
the isotropy of the late universe and consequently of the x-ray galaxy cluster scaling relations is an assumption greatly used in astronomy. however, within the last decade, many studies have reported deviations from isotropy when using various cosmological probes; a definitive conclusion has yet to be made. new, effec... | probing cosmic isotropy with a new x-ray galaxy cluster sample through the lx-t scaling relation |
new measurements of the expansion rate of the universe have plunged the standard model of cosmology into a severe crisis. in this paper, we propose a simple resolution to the problem that relies on a first order phase transition in a dark sector in the early universe, before recombination. this will lead to a short pha... | new early dark energy |
a population of binary black hole mergers has now been observed in gravitational waves by advanced ligo and virgo. the masses of these black holes appear to show evidence for a pileup between 30 and 45 m ⊙ and a cutoff above ∼45 m ⊙. one possible explanation for such a pileup and subsequent cutoff are pulsational pair-... | the impact of pair-instability mass loss on the binary black hole mass distribution |
a universal mechanism may be responsible for several unresolved cosmic conundra. the sudden drop in the pressure of relativistic matter at $w^{\pm}/z^{0}$ decoupling, the quark--hadron transition and $e^{+}e^{-}$ annihilation enhances the probability of primordial black hole (pbh) formation in the early universe. assum... | cosmic conundra explained by thermal history and primordial black holes |
simultaneous measurements of distance and redshift can be used to constrain the expansion history of the universe and associated cosmological parameters. merging binary black hole (bbh) systems are standard sirens—their gravitational waveform provides direct information about the luminosity distance to the source. ther... | a future percent-level measurement of the hubble expansion at redshift 0.8 with advanced ligo |
gamma-ray bursts (grbs) are among the brightest and most energetic events in the universe. the duration and hardness distribution of grbs has two clusters1, now understood to reflect (at least) two different progenitors2. short-hard grbs (sgrbs; t90 < 2 s) arise from compact binary mergers, and long-soft grbs (lgrbs... | discovery and confirmation of the shortest gamma-ray burst from a collapsar |
the merging black hole (bh) binaries gw190412, gw190814, and gw190521 from the third ligo/virgo observing run exhibit some extraordinary properties, including highly asymmetric masses, significant spin, and component mass in the 'mass gap'. these features can be explained if one or both components of the binary are the... | hierarchical black hole mergers in multiple systems: constrain the formation of gw190412-, gw190814-, and gw190521-like events |
fast radio bursts (frbs) are one of the most tantalizing mysteries of the radio sky; their progenitors and origins remain unknown and until now no rapid multiwavelength follow-up of an frb has been possible. new instrumentation has decreased the time between observation and discovery from years to seconds, and enables ... | a real-time fast radio burst: polarization detection and multiwavelength follow-up |
we systematically study light (<few gev ) dark matter (dm) models that thermalize with visible matter through the higgs portal and identify the remaining gaps in the viable parameter space. such models require a comparably light scalar mediator that mixes with the higgs to avoid dm overproduction and can be classifi... | probing light thermal dark matter with a higgs portal mediator |
the interaction of supernova ejecta with a surrounding circumstellar medium (csm) generates a strong shock which can convert the ejecta kinetic energy into observable radiation. given the diversity of potential csm structures (arising from diverse mass loss processes such as late-stage stellar outbursts, binary interac... | the landscape of thermal transients from supernova interacting with a circumstellar medium |
a simple way of explaining dark matter without modifying known standard model physics is to require the existence of a hidden (dark) sector, which interacts with the visible one predominantly via gravity. we consider a hidden sector containing two stable particles charged under an unbroken u (1 )' gauge symmetry, hence... | dissipative hidden sector dark matter |
we analyse fir dust continuum measurements for 14 galaxies (redshift z ≈ 7) in the alma reionization era bright emission line survey (rebels) large program to derive their physical properties. our model uses three input data, i.e. (a) the uv spectral slope, β, (b) the observed uv continuum flux at 1500 å, f1500, (c) th... | the alma rebels survey. epoch of reionization giants: properties of dusty galaxies at z ≈ 7 |
we have conducted a new search for the diffuse supernova neutrino background (dsnb) flux at super-kamiokande (sk), with a 22.5 ×2970 -kton .day exposure from its fourth operational phase iv. with the new analysis we improve on the existing background reduction techniques and systematic uncertainties and take advantage ... | diffuse supernova neutrino background search at super-kamiokande |
majoron-like bosons would emerge from a supernova (sn) core by neutrino coalescence of the form ν ν →ϕ and ν ¯ν ¯→ϕ with 100-mev-range energies. subsequent decays to (anti)neutrinos of all flavors provide a flux component with energies much larger than the usual flux from the "neutrino sphere." the absence of 100-mev-r... | strong supernova 1987a constraints on bosons decaying to neutrinos |
type ia supernovae (sne ia) are considered the most reliable \textit{standard candles} and they have played an invaluable role in cosmology since the discovery of the universe's accelerated expansion. during the last decades, the sne ia samples have been improved in number, redshift coverage, calibration methodology, a... | reduced uncertainties up to 43\\% on the hubble constant and the matter density with the sne ia with a new statistical analysis |
we present hubble space telescope imaging confirming the optical disappearance of the failed supernova (sn) candidate identified by gerke, kochanek & stanek. this ∼25 m⊙ red supergiant experienced a weak ∼106 l⊙ optical outburst in 2009 and is now at least 5 mag fainter than the progenitor in the optical. the mid-i... | the search for failed supernovae with the large binocular telescope: confirmation of a disappearing star |
we investigate the observational constraints on an interacting vacuum energy scenario with two different neutrino schemes (with and without a sterile neutrino) using the most recent data from cosmic microwave background (cmb) temperature and polarization anisotropy, baryon acoustic oscillations (bao), type ia supernova... | echo of interactions in the dark sector |
as cosmological data have improved, tensions have arisen. one such tension is the difference between the locally measured hubble constant h0 and the value inferred from the cosmic microwave background (cmb). interacting radiation has been suggested as a solution, but studies show that conventional models are precluded ... | a step in understanding the hubble tension |
we use luminous red galaxies selected from the imaging surveys that are being used for targeting by the dark energy spectroscopic instrument (desi) in combination with cmb lensing maps from the planck collaboration to probe the amplitude of large-scale structure over 0.4 ≤ z ≤ 1. our galaxy sample, with an angular numb... | cosmological constraints from the tomographic cross-correlation of desi luminous red galaxies and planck cmb lensing |
we present cosmological constraints on the sum of neutrino masses as a function of the neutrino lifetime, in a framework in which neutrinos decay into dark radiation after becoming non-relativistic. we find that in this regime the cosmic microwave background (cmb), baryonic acoustic oscillations (bao) and (uncalibrated... | improved cosmological constraints on the neutrino mass and lifetime |
we present a new technique to create a bin-averaged hubble diagram (hd) from photometrically identified sn ia data. the resulting hd is corrected for selection biases and contamination from core-collapse (cc) sne, and can be used to infer cosmological parameters. this method, called “beams with bias corrections” (bbc),... | correcting type ia supernova distances for selection biases and contamination in photometrically identified samples |
long-duration (>2 s) γ-ray bursts that are believed to originate from the death of massive stars are expected to be accompanied by supernovae. grb 060614, that lasted 102 s, lacks a supernova-like emission down to very stringent limits and its physical origin is still debated. here we report the discovery of near-in... | a possible macronova in the late afterglow of the long-short burst grb 060614 |
the runaway collision scenario is one of the most promising mechanisms to explain the formation of intermediate-mass black holes (imbhs) in young dense star clusters. on the other hand, the massive stars that participate in the runaway collisions lose mass by stellar winds. in this paper, we discuss new n-body simulati... | massive black hole binaries from runaway collisions: the impact of metallicity |
in anticipation of the upcoming deployment of the james webb space telescope (jwst), we present high-redshift predictions by the well-established santa cruz semi-analytic model. we update the models by re-calibrating them after adopting cosmological parameters consistent with recent constraints from planck. we provide ... | semi-analytic forecasts for jwst - i. uv luminosity functions at z = 4-10 |
a dense neutrino medium could experience self-induced flavor conversions on relatively small scales in the presence of the so-called fast flavor conversion modes. owing to the fact that fast conversion scales could be much smaller than the ones of the traditional collective neutrino oscillations, it has been speculated... | on fast neutrino flavor conversion modes in the nonlinear regime |
the flavor evolution of neutrinos in core collapse supernovae and neutron star mergers is a critically important unsolved problem in astrophysics. following the electron flavor evolution of the neutrino system is essential for calculating the thermodynamics of compact objects as well as the chemical elements they produ... | neutrino fast flavor instability in three dimensions for a neutron star merger |
we report the classification of the nearby (~6.4 mpc) supernova sn 2023ixf as type ii using the liverpool telescope. the spectrum shows strong flash-ionization features of h, he, c, and n. | lt classification of sn 2023ixf as a type ii supernova in m101 |
stellar-mass black holes are the final remnants of stars born with more than 15 solar masses. billions are expected to reside in the local group, yet only a few are known, mostly detected through x-rays emitted as they accrete material from a companion star. here, we report on vfts 243: a massive x-ray-faint binary in ... | an x-ray-quiet black hole born with a negligible kick in a massive binary within the large magellanic cloud |
we review the role that magnetic field may have on the formation and evolution of molecular clouds. after a brief presentation and main assumptions leading to ideal mhd equations, their most important correction, namely the ion-neutral drift is described. the nature of the multi-phase interstellar medium (ism) and the ... | the role of magnetic field in molecular cloud formation and evolution |
we measure escape fractions, fesc, of ionizing radiation from galaxies in the sphinx suite of cosmological radiation-hydrodynamical simulations of reionization, resolving haloes with $m_{\rm vir}\gtrsim 7.5 \times 10^7 \ {\rm {m}_{\odot }}$ with a minimum cell width of ≈10 pc. our new and largest 20 co-moving mpc wide ... | lyc escape from sphinx galaxies in the epoch of reionization |
we study the implementation of mechanical feedback from supernovae (sne) and stellar mass loss in galaxy simulations, within the feedback in realistic environments (fire) project. we present the fire-2 algorithm for coupling mechanical feedback, which can be applied to any hydrodynamics method (e.g. fixed-grid, moving-... | how to model supernovae in simulations of star and galaxy formation |
multi-dimensional fluid flow plays a paramount role in the explosions of massive stars as core-collapse supernovae. in recent years, three-dimensional (3d) simulations of these phenomena have matured significantly. considerable progress has been made towards identifying the ingredients for shock revival by the neutrino... | hydrodynamics of core-collapse supernovae and their progenitors |
supernova (sn) feedback is one of the key processes shaping the interstellar medium (ism) of galaxies. sne contribute to (and in some cases may dominate) driving turbulence in the ism and accelerating galactic winds. modern cosmological simulations have sufficient resolution to capture the main structures in the ism of... | supernova feedback in an inhomogeneous interstellar medium |
we present predictions for the evolution of the galaxy dust-to-gas ratio (dgr) and dust-to-metal ratio (dtm) from z = 0 → 6, using a model for the production, growth, and destruction of dust grains implemented into the simba cosmological hydrodynamic galaxy formation simulation. in our model, dust forms in stellar ejec... | the dust-to-gas and dust-to-metal ratio in galaxies from z = 0 to 6 |
we make use of atacama large millimeter/submillimeter array continuum observations of 15 luminous lyman-break galaxies at z ~ 7-8 to probe their dust-obscured star formation. these observations are sensitive enough to probe obscured star formation rates (sfrs) of 20 m ⊙ yr-1 (3σ). six of the targeted galaxies show sign... | significant dust-obscured star formation in luminous lyman-break galaxies at z 7-8 |
much of the progress made in time-domain astronomy is accomplished by relating observational multiwavelength time-series data to models derived from our understanding of physical laws. this goal is typically accomplished by dividing the task in two: collecting data (observing), and constructing models to represent that... | mosfit: modular open source fitter for transients |
magnetohydrodynamic turbulence is important in many high-energy astrophysical systems, where instabilities can amplify the local magnetic field over very short timescales. specifically, the magnetorotational instability and dynamo action have been suggested as a mechanism for the growth of magnetar-strength magnetic fi... | a large-scale dynamo and magnetoturbulence in rapidly rotating core-collapse supernovae |
analyses of the full shape of the baryon oscillation spectroscopic survey (boss) dr12 power spectrum using the one-loop prediction from the effective field theory of large-scale structures (eftboss) have led to new constraints on extensions to the λ cold dark matter model, such as early dark energy (ede), which has bee... | updated constraints from the effective field theory analysis of the boss power spectrum on early dark energy |
context. gravitational microlensing is sensitive to compact-object lenses in the milky way, including white dwarfs, neutron stars, or black holes, and could potentially probe a wide range of stellar-remnant masses. however, the mass of the lens can be determined only in very limited cases, due to missing information on... | constraining the masses of microlensing black holes and the mass gap with gaia dr2 |
we address the problem of the origin of massive stars, namely the origin, path, and timescale of the mass flows that create them. based on extensive numerical simulations, we propose a scenario where massive stars are assembled by large-scale, converging, inertial flows that naturally occur in supersonic turbulence. we... | the origin of massive stars: the inertial-inflow model |
a new class of ultra-long-duration (more than 10,000 seconds) γ-ray bursts has recently been suggested. they may originate in the explosion of stars with much larger radii than those producing normal long-duration γ-ray bursts or in the tidal disruption of a star. no clear supernova has yet been associated with an ultr... | a very luminous magnetar-powered supernova associated with an ultra-long γ-ray burst |
the wide field infrared survey telescope (wfirst) was the highest-ranked large space-based mission of the 2010 new worlds, new horizons decadal survey. it is now a nasa mission in formulation with a planned launch in the mid 2020s. a primary mission objective is to precisely constrain the nature of dark energy through ... | simulations of the wfirst supernova survey and forecasts of cosmological constraints |
massive black holes (bhs) inhabit local galaxies, including the milky way and some dwarf galaxies. bh formation, occurring at early cosmic times, must account for the properties of bhs in today's galaxies, notably why some galaxies host a bh, and others do not. we investigate the formation, distribution and growth of b... | blossoms from black hole seeds: properties and early growth regulated by supernova feedback |
gw190521 challenges our understanding of the late-stage evolution of massive stars and the effects of the pair instability in particular. we discuss the possibility that stars at low or zero metallicity could retain most of their hydrogen envelope until the pre-supernova stage, avoid the pulsational pair-instability re... | is gw190521 the merger of black holes from the first stellar generations? |
we propose a logarithmic parametrization form of energy density for the scalar field dark energy in the framework of the standard theory of gravity, which supports the necessary transition from the decelerated to the accelerated behavior of the universe. the model under consideration is constrained by available observa... | observational constraints on a logarithmic scalar field dark energy model and black hole mass evolution in the universe |
we present a model of early modified gravity (emg) consisting in a scalar field σ with a nonminimal coupling to the ricci curvature of the type mpl2+ξ σ2 plus a cosmological constant and a small effective mass and demonstrate its ability to alleviate the h0 tension while providing a good fit to cosmic microwave backgro... | early modified gravity in light of the h0 tension and lss data |
we present an analysis of the final data release of the carnegie supernova project i, focusing on the absolute calibration of the luminosity-decline rate relation for type ia supernovae (sne ia) using new intrinsic color relations with respect to the color-stretch parameter, sbv , enabling improved dust extinction corr... | the carnegie supernova project: absolute calibration and the hubble constant |
we perform a comprehensive analysis of the most common early- and late-universe solutions to the h0 , ly -α , and s8 discrepancies. when considered on their own, massive neutrinos provide a natural solution to the s8 discrepancy at the expense of increasing the h0 tension. if all extensions are considered simultaneousl... | implications of an extended dark energy cosmology with massive neutrinos for cosmological tensions |
we analyse the demographics of black holes (bhs) in the large-volume cosmological hydrodynamical simulation horizon-agn. this simulation statistically models how much gas is accreted on to bhs, traces the energy deposited into their environment and, consequently, the back-reaction of the ambient medium on bh growth. th... | the cosmic evolution of massive black holes in the horizon-agn simulation |
we present a numerical parameter survey of sub-chandrasekhar mass white dwarf (wd) explosions. carbon-oxygen wds accreting a helium shell have the potential to explode in the sub-chandrasekhar mass regime. previous studies have shown how the ignition of a helium shell can either directly ignite the wd at the core-shell... | observational predictions for sub-chandrasekhar mass explosions: further evidence for multiple progenitor systems for type ia supernovae |
we report a degeneracy between the gravitational-wave signals from quasicircular precessing black-hole mergers and those from extremely eccentric mergers, namely, head-on collisions. performing model selection on numerically simulated signals of head-on collisions using models for quasicircular binaries, we find that, ... | confusing head-on collisions with precessing intermediate-mass binary black hole mergers |
in this paper we present an extensive analysis of the gw190521 gravitational wave event with the current (fourth) generation of phenomenological waveform models for binary black hole coalescences. gw190521 stands out from other events since only a few wave cycles are observable. this leads to a number of challenges, on... | a detailed analysis of gw190521 with phenomenological waveform models |
gw170817 is the first detected gravitational wave source from a neutron star merger. we present the japanese collaboration for gravitational-wave electro-magnetic (j-gem) follow-up observations of sss17a, an electromagnetic counterpart of gw170817. sss17a shows a 2.5 mag decline in the z band during the period between ... | j-gem observations of an electromagnetic counterpart to the neutron star merger gw170817 |
we reanalyze the cepheid data used to infer the value of the hubble constant h0 by calibrating type ia supernovae. we do not enforce a universal value of the empirical cepheid calibration parameters rw (cepheid wesenheit color-luminosity parameter) and mhw (cepheid wesenheit h-band absolute magnitude). instead, we allo... | hubble tension or a transition of the cepheid snia calibrator parameters? |
the most massive and shortest-lived stars dominate the chemical evolution of the pre-galactic era. on the basis of numerical simulations, it has long been speculated that the mass of such first-generation stars was up to several hundred solar masses1-4. the very massive first-generation stars with a mass range from 140... | a metal-poor star with abundances from a pair-instability supernova |
we introduce supernnova, an open-source supernova photometric classification framework that leverages recent advances in deep neural networks. our core algorithm is a recurrent neural network (rnn) that is trained to classify light curves using only photometric information. additional information such as host-galaxy re... | supernnova: an open-source framework for bayesian, neural network-based supernova classification |
the determination of the hubble constant h0 from the cosmic microwave background by the planck collaboration (n. aghanim et al., arxiv:1807.06209) is in tension at 4.2 σ with respect to the local determination of h0 by the sh0es collaboration [m. j. reid et al., astrophys. j. lett. 886, l27 (2019) https://doi.org/10.38... | local determination of the hubble constant and the deceleration parameter |
we use planck 2018 data to constrain the simplest models of scalar-tensor theories characterized by a coupling to the ricci scalar of the type f(σ) r with f(σ) = npl2 + ξ σ2. we update our results with previous planck and bao data releases obtaining the tightest constraints to date on the coupling parameters, that is ξ... | scalar-tensor theories of gravity, neutrino physics, and the h0 tension |
we revisit a singlet majoron model in which neutrino masses arise from the spontaneous violation of lepton number. if the majoron obtains a mass of order mev, it can play the role of dark matter. we discuss constraints on the couplings of the massive majoron with masses of order mev to neutrinos from supernova data. in... | massive majorons and constraints on the majoron-neutrino coupling |
we revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several mev) than the left-handed standard model neutrinos. the discussion is centered around the idea of detecting an upscattering event mediated by a transition magn... | the neutrino magnetic moment portal: cosmology, astrophysics, and direct detection |
we provide a set of stellar evolution and nucleosynthesis calculations that applies established physics assumptions simultaneously to low- and intermediate-mass and massive star models. our goal is to provide an internally consistent and comprehensive nuclear production and yield database for applications in areas such... | nugrid stellar data set. i.stellar yields from h to bi for stars with metallicities z = 0.02 and z = 0.01 |
we study observational constraints on the nonmetricity f (q )-gravity which reproduces an exact λ cdm background expansion history while modifying the evolution of linear perturbations. to this purpose we use cosmic microwave background (cmb) radiation, baryonic acoustic oscillations (bao), redshift-space distortions (... | can f (q ) gravity challenge λ cdm ? |
to uniformly determine the properties of supernova remnants (snrs) at high energies, we have developed the first systematic survey at energies from 1 to 100 gev using data from the fermi large area telescope (lat). based on the spatial overlap of sources detected at gev energies with snrs known from radio surveys, we c... | the first fermi lat supernova remnant catalog |
the inner ~200 pc region of the galaxy contains a 4 million m⊙ supermassive black hole (smbh), significant quantities of molecular gas, and star formation and cosmic-ray energy densities that are roughly two orders of magnitude higher than the corresponding levels in the galactic disk. at a distance of only 8.2 kpc, th... | the 1.28 ghz meerkat galactic center mosaic |
models of neutrino-driven core-collapse supernova explosions have matured considerably in recent years. explosions of low-mass progenitors can routinely be simulated in 1d, 2d, and 3d. nucleosynthesis calculations indicate that these supernovae could be contributors of some lighter neutron-rich elements beyond iron. th... | the status of multi-dimensional core-collapse supernova models |
we employ robust weak gravitational lensing measurements to improve cosmological constraints from measurements of the galaxy cluster mass function and its evolution, using x-ray selected clusters detected in the rosat all-sky survey. our lensing analysis constrains the absolute mass scale of such clusters at the 8 per ... | weighing the giants - iv. cosmology and neutrino mass |
context. spectroscopic surveys of massive galaxy clusters reveal the properties of faint background galaxies thanks to the magnification provided by strong gravitational lensing.aims: we present a systematic analysis of integral-field-spectroscopy observations of 12 massive clusters, conducted with the multi unit spect... | an atlas of muse observations towards twelve massive lensing clusters |
a universal mechanism may be responsible for several unresolved cosmic conundra. the sudden drop in the pressure of relativistic matter at w± ∕z0 decoupling, the quark-hadron transition and e+e- annihilation enhances the probability of primordial black hole (pbh) formation in the early universe. assuming the amplitude ... | cosmic conundra explained by thermal history and primordial black holes |
a century ago, nuclear physics entered astrophysics, giving birth to a new field of science referred to as "nuclear astrophysics". with time, it developed at an impressive pace into a vastly inter- and multidisciplinary field bringing into its wake not only astronomy and cosmology, but also many other sub-fields of phy... | astronuclear physics: a tale of the atomic nuclei in the skies |
it is well-known that in addition to the standard lma solution to solar anomaly, there is another solution called lma-dark which requires non-standard interactions (nsi) with effective couplings as large as the fermi coupling. although this solution satisfies all the bounds from various neutrino oscillation observation... | a model for large non-standard interactions of neutrinos leading to the lma-dark solution |
we present results from a comprehensive lensing analysis in hubble space telescope (hst) data of the complete cluster lensing and supernova survey with hubble cluster sample. we identify previously undiscovered multiple images, allowing improved or first constraints on the cluster inner mass distributions and profiles.... | hubble space telescope combined strong and weak lensing analysis of the clash sample: mass and magnification models and systematic uncertainties |
we scrutinize the hypothesis that gauge singlet fermions—sterile neutrinos—interact with standard model particles through the transition magnetic moment portal. these interactions lead to the production of sterile neutrinos in supernovae followed by their decay into photons and active neutrinos which can be detected at... | neutrino magnetic moment portal and supernovae: new constraints and multimessenger opportunities |
context. gravitational wave (gw) astronomy has rapidly reached maturity, becoming a fundamental observing window for modern astrophysics. the coalescences of a few tens of black hole (bh) binaries have been detected, while the number of events possibly including a neutron star (ns) is still limited to a few. on 2019 au... | observational constraints on the optical and near-infrared emission from the neutron star-black hole binary merger candidate s190814bv |
cosmic reionization is thought to be primarily fueled by the first generations of galaxies. we examine their stellar and gaseous properties, focusing on the star formation rates and the escape of ionizing photons, as a function of halo mass, redshift, and environment using the full suite of the renaissance simulations ... | galaxy properties and uv escape fractions during the epoch of reionization: results from the renaissance simulations |
in order to apply holography and entropy relations to the whole universe, which is a gravitational and thus nonextensive system, for consistency one should use the generalized definition for the universe horizon entropy, namely tsallis nonextensive entropy. we formulate tsallis holographic dark energy, which is a gener... | holographic dark energy through tsallis entropy |
solitons are observed to form in simulations of dark matter (dm) halos consisting of bosonic fields. we use the extended press-schechter formalism to compute the mass function of solitons, assuming various forms for the relationship between halo mass and soliton mass. we further provide a new calculation of the rate of... | soliton merger rates and enhanced axion dark matter decay |
dark matter that is capable of sufficiently heating a local region in a white dwarf will trigger runaway fusion and ignite a type ia supernova. this was originally proposed by graham et al. and used to constrain primordial black holes which transit and heat a white dwarf via dynamical friction. in this paper, we consid... | white dwarfs as dark matter detectors |
gamma-ray bursts (grbs), can be employed as standardized candles, extending the distance ladder beyond type ia supernovae (sne ia, z = 2.26). we standardize grbs using the three-dimensional (3d) fundamental plane relation (the dainotti relation) among the rest-frame end time of the x-ray plateau emission, its correspon... | optical and x-ray grb fundamental planes as cosmological distance indicators |
cosmic rays with energies up to a few pev are known to be accelerated within the milky way1,2. traditionally, it has been presumed that supernova remnants were the main source of these very-high-energy cosmic rays3,4, but theoretically it is difficult to accelerate protons to pev energies5,6 and observationally there s... | hawc observations of the acceleration of very-high-energy cosmic rays in the cygnus cocoon |
in modified gravity the propagation of gravitational waves (gws) is in general different from that in general relativity. as a result, the luminosity distance for gws can differ from that for electromagnetic signals, and is affected both by the dark energy equation of state wde(z ) and by a function δ (z ) describing m... | gravitational-wave luminosity distance in modified gravity theories |
the wide field survey telescope (wfst) is a dedicated photometric surveying facility being built jointly by university of science and technology of china (ustc) and the purple mountain observatory (pmo). it is equipped with a 2.5-meter diameter primary mirror, an active optics system, and a mosaic ccd camera with 0.73 ... | science with the 2.5-meter wide field survey telescope (wfst) |
with cosmicflows-4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. eight methodologies are employed, with the largest numbers coming from the correlations between the photometric and kinematic properties of spiral galaxies (tf) and elliptical galaxies (fp). supernovae that arise from degenerate... | cosmicflows-4 |
recently born magnetars are promising candidates for the engines powering fast radio bursts (frbs). the focus thus far has been placed on millisecond magnetars born in rare core-collapse explosions, motivated by the star-forming dwarf host galaxy of the repeating frb 121102, which is remarkably similar to the hosts of ... | fast radio bursts from magnetars born in binary neutron star mergers and accretion induced collapse |
early observations of supernovae (sne) indicate that enhanced mass-loss and pre-sn outbursts may occur in progenitors of many types of sne. we investigate the role of energy transport via waves driven by vigorous convection during late-stage nuclear burning of otherwise typical 15 m⊙ red supergiant sn progenitors. usin... | pre-supernova outbursts via wave heating in massive stars - i. red supergiants |
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