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the effects of the nuclear structure uncertainties on the description of processes induced by coherent scattering of neutrinos on nuclei are investigated. a reference calculation based on a specific nuclear model is defined and the cross sections and also the expected number of events produced by neutrinos generated by... | nuclear structure uncertainties in coherent elastic neutrino-nucleus scattering |
the deep underground neutrino experiment (dune) is a 40-kton underground liquid argon time-projection-chamber detector that will have unique sensitivity to the electron flavor component of a core-collapse supernova neutrino burst. we present expected capabilities of dune for measurements of neutrinos in the few-tens-of... | supernova burst observations with dune |
gadolinium-loading of large water cherenkov detectors is a prime method for the detection of the diffuse supernova neutrino background (dsnb). while the enhanced neutron tagging capability greatly reduces single-event backgrounds, correlated events mimicking the ibd coincidence signature remain a potentially harmful ba... | cnns for enhanced background discrimination in dsnb searches in large-scale water-gd detectors |
with the aim of improving our knowledge about their nature, we conduct a comparative study on a sample of long-rising type ii supernovae (sne) resembling sn 1987a. to do so, we deduce various scaling relations from different analytic models of h-rich sne, discussing their robustness and feasibility. then, we use the be... | long-rising type ii supernovae resembling supernova 1987a - i. a comparative study through scaling relations |
we present the new code nada-fld to solve multidimensional neutrino-hydrodynamics in full general relativity (gr) in spherical polar coordinates. the energy-dependent neutrino transport assumes the flux-limited diffusion approximation and evolves the neutrino energy densities measured in the frame comoving with the flu... | nada-fld: a general relativistic, multidimensional neutrino-hydrodynamics code employing flux-limited diffusion |
the thermal quasiparticle random-phase approximation is combined with the skyrme energy density functional method (skyrme-tqrpa) to study the response of a hot nucleus to an external perturbation. for the sample nuclei 56fe and 82ge, the skyrme-tqrpa is applied to analyze thermal effects on the strength function of cha... | thermal quasiparticle random-phase approximation with skyrme interactions and supernova neutral-current neutrino-nucleus reactions |
the possible fermi detection of an electromagnetic counterpart to the double black hole merger gw150914 has inspired many theoretical models, some of which propose that the holes spiralled together inside a massive star. however, we show that the heat produced by the dynamical friction on such black hole orbits can exc... | energetic constraints on electromagnetic signals from double black hole mergers |
the next time a core-collapse supernova (sn) explodes in our galaxy, various detectors will be ready and waiting to detect its emissions of gravitational waves (gws) and neutrinos. current numerical simulations have successfully introduced multi-dimensional effects to produce exploding sn models, but thus far the explo... | probing the rotation of core-collapse supernova with a concurrent analysis of gravitational waves and neutrinos |
using full boltzmann neutrino transport, we performed 2d core-collapse supernova simulations in axisymmetry for two progenitor models with 11.2 and 15.0 m ⊙, both rotational and nonrotational. we employed the results obtained in the early post-bounce phase (t ≲ 20 ms) to assess performance under rapid rotation of some ... | principal-axis analysis of the eddington tensor for the early post-bounce phase of rotational core-collapse supernovae |
we present neutrino-transport hydrodynamic simulations of electron-capture supernovae (ecsne) in flash with new two-dimensional (2d) collapsing progenitor models. these progenitor models feature the 2d modelling of oxygen-flame propagation until the onset of core collapse. we perform axisymmetric simulations with six p... | hydrodynamic simulations of electron-capture supernovae: progenitor and dimension dependence |
resonant interactions between neutrinos from a galactic supernova and dark matter particles can lead to a sharp dip in the neutrino energy spectrum. due to its excellent energy resolution, measurement of this effect with the juno experiment can provide evidence for such couplings. we discuss how juno may confirm or fur... | juno sensitivity to resonant absorption of galactic supernova neutrinos by dark matter |
a high-statistics measurement of the neutrinos from a galactic core-collapse supernova is extremely important for understanding the explosion mechanism, and studying the intrinsic properties of neutrinos themselves. in this paper, we explore the possibility to constrain the absolute scale of neutrino masses mν via the ... | constraining absolute neutrino masses via detection of galactic supernova neutrinos at juno |
a comparative study of the λ hyperon equations of state of banik, hempel and banyopadhyay (bhb), banik et al., and shen et al. (denoted as hshen λ) for core-collapse supernova (ccsn) simulations is carried out in this work. the dynamical evolution of a protoneutron star (pns) into a black hole is investigated in ccsn s... | a comparative study of hyperon equations of state in supernova simulations |
the importance of microphysical inputs from laboratory nuclear experiments and theoretical nuclear structure calculations in the understanding of core-collapse dynamics and the subsequent supernova explosion is largely recognized in the recent literature. in this work, we analyze the impact of the masses of very neutro... | modification of magicity toward the dripline and its impact on electron-capture rates for stellar core collapse |
the liquid argon time projection chambers (lartpcs) are a choice for the next generation of large neutrino detectors due to their optimal performance in particle tracking and calorimetry. the detection of argon scintillation light plays a crucial role in the event reconstruction as well as the time reference for non-be... | increasing the efficiency of photon collection in lartpcs: the arapuca light trap |
recent hydrodynamical simulations of core-collapse supernova (ccsn) evolution have highlighted the importance of thorough control over the microscopic physics responsible for such internal processes as neutrino heating. in particular, it has been suggested that modifications to the neutrino-nucleon elastic cross sectio... | role of nucleon strangeness in supernova explosions |
some massive stars end their lives as \textit{failed} core-collapse supernovae (ccsne) and become black holes (bhs). although in this class of phenomena the stalled supernova shock is not revived, the outer stellar envelope can still be partially ejected. this occurs because the hydrodynamic equilibrium of the star is ... | a parameterized neutrino emission model to study mass ejection in failed core-collapse supernovae |
we present the first ab initio lattice calculations of spin and density correlations in hot neutron matter using high-fidelity interactions at next-to-next-to-next-to-leading order (n3lo) in chiral effective field theory. these correlations have a large impact on neutrino heating and shock revival in core-collapse supe... | structure factors for hot neutron matter from ab initio lattice simulations with high-fidelity chiral interactions |
time delay in schwarzschild spacetime for null and timelike signals with arbitrary velocity v is studied. the total travel time tif is evaluated both exactly and approximately in the weak field limit, with the result given as functions of signal velocity, source-lens, and lens-observer distances, angular position of th... | time delay of timelike particles in gravitational lensing of the schwarzschild spacetime |
background: nuclear pasta matter, emerging due to the competition between the long-range coulomb force and the short-range strong force, is believed to be present in astrophysical scenarios, such as neutron stars and core-collapse supernovae. its structure can have a high impact, e.g., on neutrino transport or the tida... | survey of nuclear pasta in the intermediate-density regime: structure functions for neutrino scattering |
in this paper, we investigate the constraints on the total neutrino mass ∑mν in a cosmological model in which dark energy and neutrinos are coupled such that the mass of the neutrinos and potentials are function of the scalar field as mν=m0exp(α/ϕ mpl) and v (ϕ ) =mpl4exp(-λ/ϕ mpl) respectively. the observational data ... | constraining neutrino mass in dark energy dark matter interaction and comparison with 2018 planck results |
we investigate whether the recent ultra-high energy neutrino events detected at the icecube neutrino observatory could come from the decay of charmed mesons produced within the mildly relativistic jets of supernova-like astrophysical sources. we demonstrate that the allowed region in the astrophysical and qcd parameter... | charm decay in slow-jet supernovae as the origin of the icecube ultra-high energy neutrino events |
we study the role of light nuclear clusters in simulations of core-collapse supernovae. expressions for the reaction rates are developed for a large selection of charged current absorption and scattering processes with light clusters. medium modifications are taken into account at the mean-field level. we explore the p... | expected impact from weak reactions with light nuclei in corecollapse supernova simulations |
some massive stars end their lives as failed core-collapse supernovae (ccsne) and become black holes (bhs). although in this class of phenomena the stalled supernova (sn) shock is not revived, the outer stellar envelope can still be partially ejected. this occurs because the hydrodynamic equilibrium of the star is disr... | a parameterized neutrino emission model to study mass ejection in failed core-collapse supernovae |
snowglobes (supernova observatories with globes) computes interaction rates and distributions of observed quantities for supernova burst neutrinos in common detector materials. the code provides a very simple and fast code and data package for tests of observability of physics signatures in current and future detectors... | snowglobes: supernova observatories with globes |
we demonstrate that observations of the gravitational memory from core collapse supernovae at future deci-hz interferometers enable time-triggered searches of supernova neutrinos at mt-scale detectors. achieving a sensitivity to characteristic strains of at least ∼10-25 at f ≃0.3 hz —e.g., by improving the noise of dec... | memory-triggered supernova neutrino detection |
the behaviour and properties of neutrinos in non-uniform nuclear matter, surrounded by electrons and other neutrinos are studied in the protoneutron star early stage characterized by trapped neutrinos. the nuclear matter itself is modelled by a relativistic mean-field approach, and models with both constant couplings a... | neutrino diffusion in the pasta phase matter within the thomas-fermi approach |
we examine the protoneutron star (pns) stability in this study by solving the radial oscillation equations. for this purpose, we adopt the numerical results of a massive pns towards the black hole formation obtained by spherically symmetric numerical simulations for a core-collapse supernova with general relativistic n... | stability of the protoneutron stars towards black hole formation |
neutron stars are born out of core-collapse supernovae, and they are imparted natal kicks at birth as a consequence of asymmetric ejection of matter and possibly neutrinos. unless the force resulting from the kicks is exerted exactly at their center, it will also cause the neutron star to rotate. in this paper, we disc... | neutron star kicks and implications for their rotation at birth |
observations with next-generation ground-based detectors further enhanced with multi-messenger (electromagnetic and neutrino) detections will allow us to probe new extreme astrophysics. target sources included: core-collapse supernovae, continuous emission from isolated or accreting neutron stars, and bursts from magne... | the yet-unobserved multi-messenger gravitational-wave universe |
baryonic matter close to the saturation density is very likely to present complex inhomogeneous structures collectively known under the name of nuclear pasta phase. at finite temperature, the different geometric structures are expected to coexist with potential consequences on the neutron star crust conductivity and ne... | fluctuations in the nuclear pasta phase |
a major part of the energy released upon the gravitational collapse of massive-star cores is carried away by neutrinos. neutrinos play a crucial role in collapsing supernovae (sne). at the present time, mathematical models of core-collapse sne are based on multidimensional gas dynamics and thermonuclear reactions, wher... | supernova-explosion mechanism involving neutrinos |
it is known that muons are scarce just after the birth of a proto-neutron star via a supernova explosion, but get more abundant as the proto-neutron star cools via neutrino emissions on the kelvin-helmholtz timescale. we evaluate all the relevant rates of the neutrino interactions with muons at different times in the p... | leptonic and semi-leptonic neutrino interactions with muons in proto-neutron star cooling |
we consider the neutrino self-energy in a background composed of a scalar particle and a fermion using a simple model for the coupling of the form λ f¯rνlϕ . the results are useful in the context of dark matter-neutrino interaction models in which the scalar and/or fermion constitute the dark matter. the corresponding ... | neutrino effective potential in a fermion and scalar background |
in a previous work [haas et al., phys. plasmas 23, 012104 (2016)], a new model was introduced, taking into account the role of the fermi weak force due to neutrinos coupled to magnetohydrodynamic plasmas. the resulting neutrino-magnetohydrodynamics was investigated in a particular geometry associated with the magnetoso... | instabilities and propagation of neutrino magnetohydrodynamic waves in arbitrary direction |
under the assumption that jets explode core collapse supernovae (ccsne) in a negative jet feedback mechanism (jfm), this paper shows that rapidly rotating neutron stars are likely to be formed when the explosion is very energetic. under the assumption that an accretion disk or an accretion belt around the just-formed n... | the magnetar model of the superluminous supernova gaia16apd and the explosion jet feedback mechanism |
investigations of dense neutrino cloud evolution through quantum kinetic equations led to the possibility of "fast flavor" (ff) processes. it is shown here that the usual quantum kinetic equations, while signaling the instabilities that make some instances of ff possible, are being erroneously interpreted. approaching ... | fast flavor evolution in dense neutrino systems, as described in quantum field theory |
core-collapse supernovae are a useful laboratory to probe the nature of exotic particles. if axionlike particles (alps) are produced in supernovae, they can affect the transfer of energy and leave traces in observational signatures. in this work, we present results from two-dimensional supernova models including the ef... | multimessenger signals of heavy axionlike particles in core-collapse supernovae: two-dimensional simulations |
the observation of electromagnetic counterparts to both high energy neutrinos and gravitational waves marked the beginning of a new era in astrophysics. the multi-messenger approach allows us to gain new insights into the most energetic events in the universe such as gamma-ray bursts, supernovas, and black hole mergers... | high-energy alerts in the multi-messenger era |
the energy radiated in supernova neutrinos is a fundamental quantity that is closely related to the gravitational binding energy of a neutron star. recently the tidal deformability of neutron stars was constrained by gravitational wave observations. by considering several equations of state, we find a strong correlatio... | total energy in supernova neutrinos and the tidal deformability and binding energy of neutron stars |
core-collapse supernova explosions are driven by a central engine that converts a small fraction of the gravitational binding energy released during core collapse to outgoing kinetic energy. the suspected mode for this energy conversion is the neutrino mechanism, where a fraction of the neutrinos emitted from the newly... | core-collapse supernova simulations including neutrino interactions from the virial eos |
black hole formation in a core-collapse supernova is expected to lead to a distinctive, abrupt drop in neutrino luminosity due to the engulfment of the main neutrino-producing regions as well as the strong gravitational redshift of those remaining neutrinos which do escape. previous analyses of the shape of the cutoff ... | nonradial neutrino emission upon black hole formation in core collapse supernovae |
we discuss the possibility of reconstructing the newly formed proto-neutron star radius from the late time neutrino signal. a black-body emission is assumed for the neutron star cooling phase. we parametrize the neutrino time-integrated fluxes based on simulations of roberts and reddy. a likelihood analysis of the inve... | late time supernova neutrino signal and proto-neutron star radius |
core-collapse supernovae produce an intense burst of electron antineutrinos in the few-tens-of-mev range. several large liquid scintillator-based detectors (llsd) are currently operated worldwide, being very effective for low energy antineutrino detection through the inverse beta decay (ibd) process. in this article, w... | prompt directional detection of galactic supernova by combining large liquid scintillator neutrino detectors |
core-collapse supernovae are fascinating astrophysical objects for multimessenger studies. gravitational waves are expected to play an important role in the supernova explosion mechanism. unfortunately, their modeling is challenging, due to the stochastic nature of the dynamics and the vast range of possible progenitor... | multimessenger analysis strategy for core-collapse supernova search: gravitational waves and low-energy neutrinos |
direct observations of core-collapse supernovae (sne) and their red supergiant (rsg) progenitors suggest that the upper mass limit of rsgs may be only about 16.5{--}18{m}⊙ , while the standard theoretical value is as much as 25{m}⊙ . we investigate the possibility that rsgs with m\gt 16.5{--}18{m}⊙end their lives as fa... | red-supergiant and supernova rate problems: implication for the relic supernova neutrino spectrum |
we study the influence of hot and dense matter in core-collapse supernovae by adopting an up-to-date nuclear equation of state (eos) based on the microscopic nuclear many-body frameworks. we explore effects of the eos based on the dirac-brückner-hartree-fock theory through comparisons with those based on the variationa... | effects of nuclear matter and composition in core-collapse supernovae and long-term proto-neutron star cooling |
the classical limit on the accretion luminosity of a neutron star is given by the eddington luminosity. the advanced models of accretion on to magnetized neutron stars account for the appearance of magnetically confined accretion columns and allow the accretion luminosity to be higher than the eddington value by a fact... | ultraluminous x-ray sources as neutrino pulsars |
we show that the spectral split of a neutrino ensemble, which initially consists of electron type neutrinos, is analogous to the bardeen-cooper-schrieffer-bose-einstein condensate (bcs-bec) crossover already observed in ultracold atomic gas experiments. such a neutrino ensemble mimics the deleptonization burst of a cor... | spectral splits of neutrinos as a bcs-bec crossover type phenomenon |
we study models in which neutrino masses are generated dynamically at cosmologically late times. our study is purely phenomenological and parameterized in terms of three effective parameters characterizing the redshift of mass generation, the width of the transition region, and the present day neutrino mass. we also st... | constraining dynamical neutrino mass generation with cosmological data |
we calculate the spin-flavor precession (sfp) of dirac neutrinos induced by strong magnetic fields and finite neutrino magnetic moments in dense matter. as found in the case of majorana neutrinos, the sfp of dirac neutrinos is enhanced by the large magnetic field potential and suppressed by large matter potentials comp... | spin-flavor precession of dirac neutrinos in dense matter and its potential in core-collapse supernovae |
selected results from the multipurpose large volume detector (lvd) are presented. investigations at the lvd setup are being performed according to the program of continuous searches for neutrinos from supernova explosions in the milky way galaxy and muon- and neutron-physics programs. at the present time, the lvd setup... | lvd—multipurpose russian-italian detector |
we analyze the effect of the antineutrino mass over the β--decay rates calculated within the scheme of the gross theory of beta decay (gtbd). we give a non-null value to the mass of the antineutrino participating in β--decay, (a ,z )→(a ,z +1 )+e-+ν¯ e, which is usually neglected because we know it is small compared wi... | effects of antineutrino mass on β--decay rates calculated within the gross theory of beta decay |
entanglement of constituents of a many-body system is a recurrent feature of quantum behaviour. quantum information science provides tools, such as the entanglement entropy, to help assess the amount of entanglement in such systems. many-neutrino systems are present in core-collapse supernovae, neutron star mergers, an... | quantum entanglement and neutrino many-body systems |
we make extensive numerical studies of masses and radii of proto-neutron stars during the first second after their birth in core-collapse supernova events. we use a quasi-static approach for the computation of proto-neutron star structure, built on parametrized entropy and electron fraction profiles, that are then evol... | what can be learned from a proto-neutron star's mass and radius? |
we present the first fully relativistic numerical calculations of differentially rotating strange quark stars models for broad ranges of the maximum density and of the degree of differential rotation. our simulations are performed with the very accurate and stable multi-domain spectral code flatstar and use the mit bag... | maximum mass of differentially rotating strange quark stars |
we compute with lattice field theory the vector and axial static structure factors of the unitary gas for arbitrary temperature above the superfluid transition and for fugacities 0.1 <z <1.0 . using the lattice formulation, we calculate beyond the validity of the virial expansion, a commonly used technique in man... | structure factors of the unitary gas under supernova conditions |
a new theoretical framework, based on the quantum field theory of open systems applied to neutrinos, has been developed to describe the neutrino evolution in external environments accounting for the effect of the neutrino quantum decoherence. the developed new approach enables one to obtain the explicit expressions of ... | neutrino quantum decoherence engendered by neutrino radiative decay |
the titus, tokai intermediate tank for unoscillated spectrum, detector, is a proposed gd-doped water cherenkov tank with a magnetised muon range detector downstream. it is located at j-parc at about 2 km from the neutrino target and it is proposed as a potential near detector for the hyper-kamiokande experiment. assumi... | titus: the tokai intermediate tank for the unoscillated spectrum |
the evolution of many astrophysical systems is dominated by the interaction between matter and radiation such as photons or neutrinos. the dynamics can be described by the evolution equations of radiation hydrodynamics in which reactions between matter particles and radiation quanta couples the hydrodynamic equations t... | minimally implicit methods for the numerical integration of the neutrino transport equations |
the progenitor stars of core-collapse supernovae (ccsne) are asymmetrically fluctuating due to turbulent convections in the late stages of their lives. the progenitor asymmetry at the pre-supernova stage has recently caught the attention as a new ingredient to facilitate shock revival in the delayed neutrino-heating me... | on the importance of progenitor asymmetry to shock revival in core-collapse supernovae |
i estimate the frequencies of gravitational waves from jittering jets that explode core collapse supernovae (ccsne) to crudely be 5-30 hz, and with strains that might allow detection of galactic ccsne. the jittering jets explosion mechanism (jjem) asserts that most ccsne are exploded by jittering jets that the newly bo... | predicting gravitational waves from jittering-jets-driven core collapse supernovae |
the roles of neutrinos and convective instability in collapsing supernovae are considered. spherically symmetrical computations of the collapse using the boltzmann equation for the neutrinos lead to the formation of the condition of convective instability, {( {{partial p}/{partial s}} )_{ρ {y_l}}}{ds}/{dr} + {( {{parti... | neutronization of matter in a stellar core and convection during gravitational collapse |
neutrino nuclear scattering in hot and dense matter relevant for supernovae, neutron star mergers, and proto-neutron stars is considered. at finite temperature, neutrinos exhibit exo- and endoenergetic scattering on nuclear species due to the neutral-current gamow-teller interaction component. from an analysis of energ... | energy exchange in neutrino nuclear scattering |
we calculate the differential scattering rate for thermal neutrinos in a hot and dilute gas of interacting neutrons using linear response theory. the dynamical structure factors for density and spin fluctuations of the strongly interacting neutron matter, expected in the neutrino decoupling regions of supernovae and ne... | neutrino-nucleon scattering in the neutrino-sphere |
we assess the utility of an optimization-based data assimilation (d.a.) technique for treating the problem of nonlinear neutrino flavor transformation in core-collapse supernovae. d.a. uses measurements obtained from a physical system to estimate the state variable evolution and parameter values of the associated model... | an optimization-based approach to calculating neutrino flavor evolution |
a search is performed for supernovalike neutrino interactions coincident with 76 gravitational wave events detected by the ligo/virgo collaboration. for 40 of these events, full readout of the time around the gravitational wave is available from the nova far detector. for these events, we set limits on the fluence of t... | extended search for supernovalike neutrinos in nova coincident with ligo/virgo detections |
based on the kompaneets approximation, we develop a robust methodology to calculate spectral redistribution via inelastic neutrino-nucleon scattering in the context of core-collapse supernova simulations. the resulting equations conserve lepton number to machine precision and scale linearly, not quadratically, with num... | generalized kompaneets formalism for inelastic neutrino-nucleon scattering in supernova simulations |
gamma-ray bursts (grbs) might be powered by black hole (bh) hyperaccretion systems via the blandford-znajek (bz) mechanism or neutrino annihilation from neutrino-dominated accretion flows (ndafs). magnetic coupling (mc) between the inner disc and bh can transfer angular momentum and energy from the fast-rotating bh to ... | neutrinos and gravitational waves from magnetized neutrino-dominated accretion discs with magnetic coupling |
in this study, we present the first multidimensional core-collapse supernovae (ccsne) simulations including qcd axions in order to assess the impact on the ccsn explosion mechanism. we include axions in our simulations through the nucleon-nucleon bremsstrahlung emission channel and as a pure energy-sink term under the ... | neutrino driven explosions aided by axion cooling in multidimensional simulations of core-collapse supernovae |
the influence of propagation dynamics of intense neutrino beams on the hydrodynamic jeans instability in a magnetized quantum plasma is investigated. the dynamics of a self-gravitating, magnetized electron-ion quantum plasma weakly interacting with neutrinos are considered in a neutrino magnetohydrodynamic model. the m... | influence of neutrino beam on the jeans instability in a magnetized quantum plasma |
the helium and lead observatory (halo) is a new supernova neutrino detector at snolab base on neutrino reactions on lead. currently it is the only detector whose signal is dominated by the νe component of supernova neutrinos. a short description of the detector and its current status are given. | halo, a supernova neutrino observatory |
during the accretion phase of a core-collapse supernovae, large amplitude turbulence is generated by the combination of the standing accretion shock instability and convection driven by neutrino heating. the turbulence directly affects the dynamics of the explosion, but there is also the possibility of an additional, i... | the effect of core-collapse supernova accretion phase turbulence on neutrino flavor evolution |
neutrino emission and their transport of energy to the supernova shock region are sensitive to the physics of hot and dense nuclear matter, which is a complex problem due to the strong correlations induced by nuclear forces. we derive charged-current opacities for electron neutrinos and antineutrinos in supernova matte... | skyrme-rpa study of charged-current neutrino opacity in hot and dense supernova matter |
using the thermal quasiparticle random-phase approximation, we study the process of neutrino and antineutrino capture on hot nuclei in supernova environments. for the sample nuclei 56fe and 82ge we perform a detailed analysis of thermal effects on the strength distribution of allowed gamow-teller (gt) transitions which... | neutrino absorption by hot nuclei in supernova environments |
the recent study of the sn 2013fs flash spectrum suggests an enormous explosion energy for sne iip, far beyond the possibilities of the neutrino mechanism. the issue of the explosion energy of sn 2013fs is revisited, making use of the effects of the early supernova interaction with the dense circumstellar shell. the ve... | the explosion energy of the type iip supernova sn 2013fs with a confined dense circumstellar shell |
icecube is a cubic kilometer neutrino detector array in the antarctic ice that was designed to search for astrophysical, high-energy neutrinos. it has detected a diffuse flux of astrophysical neutrinos that appears to be of extragalactic origin. a possible contribution to this diffuse flux could stem from core-collapse... | searching for high-energy neutrinos from core-collapse supernovae with icecube |
we investigate the quark deconfinement phase transition in cold (t = 0) and hot β-stable hadronic matter. assuming a first-order phase transition, we calculate and compare the nucleation rate and the nucleation time due to quantum and thermal nucleation mechanisms. we show that above a threshold value of the central pr... | quark deconfinement in neutron stars and astrophysical implications |
using the data from the online fast processing chain, the km3net collaboration has performed a dedicated search for track-like muon neutrino events arriving from the direction of grb 221009a (dichiara et al. gcn 32632 (swift); veres et al. gcn 32636 (fermi-gbm)). the search covers the time range of [t0-50s, t0+5000s], ... | grb 221009a: search for neutrinos with km3net |
the neutrino burst detected during supernova sn 1987a is explained in a strangeon star model, in which it is proposed that a pulsar-like compact object is composed of strangeons (strangeon: an abbreviation for “strange nucleon”). a nascent strangeon star’s initial internal energy is calculated, with the inclusion of pi... | supernova neutrinos in a strangeon star model |
according to conventional wisdom the 5 h early mont blanc burst probably was not associated with sn 1987a, but if it was genuine, some exotic physics explanation had to be responsible. here we consider one truly exotic explanation, namely faster-than-light neutrinos having mν2 = - 0.38 kev2. it is shown that the mont b... | the mont blanc neutrinos from sn 1987a: could they have been monochromatic (8 mev) tachyons with m2 = - 0.38 kev2? |
background: inelastic neutrino-nucleus scattering is important for understanding core-collapse supernovae and the detection of emitted neutrinos from such events in earth-based detectors. direct measurement of the cross sections is difficult and has only been performed on a few nuclei. it is, therefore, important to de... | the (6li,*6li[3.56 mev ] ) reaction at 100 mev/u as a probe of gamow-teller transition strengths in the inelastic scattering channel |
neutrinos from core collapse supernovae can excite nuclei of some detector materials beyond their neutron emission thresholds. detection of these neutrons can give valuable information about the supernova explosion mechanism and possibly also throw light on neutrino properties. in this article, we give a brief review o... | supernova neutrino detection through neutron emission by nuclei |
based on the shell and pair effects and the decay energy, we investigate the comparative half‑lives of β−‑decay for some iron group nuclei and mainly discuss the electron energy, beta decay threshold energy, and the antineutrino energy losses by β−‑decay of several typical iron isotopes in the presence of strong electr... | supernova antineutrino energy losses of 59co, 56co, 56ni, and 56fe by β--decay in strongly screened plasma |
we demonstrate that the neutrino-driven outflows inside exploding core-collapse supernovae possess a special property of near-criticality, that is, they are on the edge of forming termination shocks. we derive a novel criterion for the formation of the shock, in terms of the fundamental parameters of the problem: the n... | near-critical supernova outflows and their neutrino signatures |
in this work we present computed cross sections for the incoherent neutral-current neutrino scattering off the stable cadmium isotopes. the main focus is on supernova neutrinos. the nuclear states of the even-mass and odd-mass cadmium isotopes have been constructed using the quasiparticle random-phase approximation and... | neutrino scattering off the stable cadmium isotopes: neutral-current processes |
the centers of the core-collapse supernovae are one of the densest environments in the universe. under such conditions, it is conceivable that a first-order phase transition from ordinary nuclear matter to the quark-gluon plasma occurs. this transition releases a large amount of latent heat that can drive a supernova e... | exploiting stellar explosion induced by the qcd phase transition in large-scale neutrino detectors |
the integral parameters (mass, radius) of hot proto-quark stars that are formed in supernova explosion are studied. we use the mit bag model to determine the pressure of up-down and strage quark matter at finite temperature and in the regime where neutrinos are trapped. it is shown that such stars are heated to tempera... | reduction of the mass of the proto-quark star during cooling |
in this study, we investigate the ion-ball screening model (model (i)), focused on the screening electrostatic potential per electron under the wigner-seitz approximation and the q-value correction. by considering the changes of the coulomb free energy and the effects of strong electron screening (ses) on the q-value a... | strongly screening β- decay antineutrino energy loss in presupernova |
we study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like juno, as a key observable for identifying the explosion mechanism of a galactic core-collapse supernova. if the supernova is not powered by the core but rather, e.g., by collapse-indu... | neutrino flavor as a test of the explosion mechanism of core-collapse supernovae |
providing an early warning of galactic supernova explosions from neutrino signals is important in studying supernova dynamics and neutrino physics. a dedicated supernova trigger system has been designed and installed in the data acquisition system at daya bay and integrated into the worldwide supernova early warning sy... | design, characterization, and sensitivity of the supernova trigger system at daya bay |
we overview the progress of the tables of the equation of state for astrophysical simulations and the numerical methods of neutrino transfer. hot and dense matter play essential roles in core-collapse supernovae and neutron stars. equation of state determines the structure of compact objects and their dynamics through ... | equation of state and neutrino transfer in supernovae and neutron stars |
a large fraction of the energy released during the gravitational collapse of the core of a massive star is carried by neutrinos. neutrinos play the main role in explaining core-collapse supernovae. a self-consistent formulation of the gravitational collapse is solved using multidimensional gas dynamics, taking into acc... | large-scale instability in supernovae and the neutrino spectrum |
a large fraction of the energy released during the gravitational collapse of the core of a massive star is carried by neutrinos. neutrinos play the main role in explaining core-collapse supernovae. a self-consistent formulation of the gravitational collapse is solved using 2d gas dynamics, taking into account the spect... | large-scale instability during gravitational collapse and the escaping neutrino spectrum during a supernova explosion |
the present work constitutes a detailed study of neutral-current (nc) supernova-neutrino scattering off the stable even-even lead isotopes 204,206,208. this is a continuation of our previous work [almosly et al., phys. rev. c. 94, 044614 (2016), 10.1103/physrevc.94.044614] where we investigated charged-current processe... | neutral-current supernova-neutrino cross sections for 204,206,208pb calculated by skyrme quasiparticle random-phase approximation |
two accretion columns have been argued to form over the surface of a newborn millisecond magnetar for an extremely high accretion rate ≳1.8 ×10-2 m⊙ s-1 that may occur in the core collapse of a massive star. in this paper, we investigate the characteristics of these accretion columns and their gravitational wave (gw) r... | gravitational waves from newborn accreting millisecond magnetars |
we investigate a method to construct parametrized progenitor models for core-collapse supernova simulations. different from all modern core-collapse supernova studies, which rely on progenitor models from stellar evolution calculations, we follow the methodology of baron & cooperstein to construct initial models. c... | parametric initial conditions for core-collapse supernova simulations |
the detection of gravitational waves from core-collapse supernova (ccsn) explosions is a challenging task, yet to be achieved, in which it is key the connection between multiple messengers, including neutrinos and electromagnetic signals. in this work, we present a method for detecting these kind of signals based on ma... | deep learning for multimessenger core-collapse supernova detection |
the deep underground neutrino experiment (dune), a 40-kton fiducial mass underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino-flavor component of the burst of neutrinos expected from the next galactic core-collapse supernova. such an observation will bring unique insig... | core-collapse supernove burst neutrinos in dune |
there is an accepted approach to calculation of the neutrino flavor density-matrix in the halo of a supernova, in which neutrino amplitudes, not cross-sections, need to be followed carefully in the region above the region of frequent scatterings. the same reasoning and techniques, applied to the evolution of neutrino f... | neutrino refractive effects during their decoupling era in the early universe |
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