Detection of the Neutrino Signal from SN1987A Using the INR Baksan Underground Scintillation Telescope

Alexeyev, E. N.; Alexeyeva, L. N.; Krivoscheina, I. V.; Volchenko, V. I.

doi:10.1007/978-3-642-73679-7_29

Cited by 29 publications

(34 citation statements)

References 2 publications

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“…One possibility for producing a massive dark core without accreting DM from the halo arises if DM particles are produced via bremsstrahlung in a new-born hot neutron star [22,23]. The upper limit on the total mass of exotic particles produced this way arises from the measured neutrino burst of SN 1987A [75][76][77][78][79]. Adopting the 'Raffelt criterion' [80] that χ production should not reduce the duration of the neutrino burst from SN 1987A by more than 50%, we require that the instantaneous χ luminosity should be L χ ≤ 3 × 10 52 ergs s −1 .…”

Section: Constraints On Dark Core Production In Supernovaementioning

confidence: 99%

Cuckoo’s eggs in neutron stars: can LIGO hear chirps from the dark sector?

Laha

Opferkuch

Shepherd

2018

J. High Energ. Phys.

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We explore in detail the possibility that gravitational wave signals from binary inspirals are affected by a new force that couples only to dark matter particles. We discuss the impact of both the new force acting between the binary partners as well as radiation of the force carrier. We identify numerous constraints on any such scenario, ultimately concluding that observable effects on the dynamics of binary inspirals due to such a force are not possible if the dark matter is accrued during ordinary stellar evolution. Constraints arise from the requirement that the astronomical body be able to collect and bind at small enough radius an adequate number of dark matter particles, from the requirement that the particles thus collected remain bound to neutron stars in the presence of another neutron star, and from the requirement that the theory allows old neutron stars to exist and retain their charge. Thus, we show that any deviation from the predictions of general relativity observed in binary inspirals must be due either to the material properties of the inspiraling objects themselves, such as a tidal deformability, to a true fifth force coupled to baryons, or to a nonstandard production mechanism for the dark matter cores of neutron stars. Viable scenarios of the latter type include production of dark matter in exotic neutron decays, or the formation of compact dark matter objects in the early Universe that later seed star formation or are captured by stars.

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Section: Constraints On Dark Core Production In Supernovaementioning

confidence: 99%

Cuckoo’s eggs in neutron stars: can LIGO hear chirps from the dark sector?

Laha

Opferkuch

Shepherd

2018

J. High Energ. Phys.

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“…The dependence of the final results on the different models of progenitor stars, neutrino flavor conversions and the relevant backgrounds is also discussed.In the paradigm of the delayed neutrino-driven supernova (SN) explosions, massive stars heavier than (8 · · · 10) solar masses will end their lives as core-collapse SNe by emitting a huge number of neutrinos of tens of MeV energies, which carry away most of the released gravitational binding energy of 3 × 10 53 erg [1,2]. The successful detection of neutrinos from SN 1987A in Kamiokande-II [3], IMB [4] and Baksan [5] experiments has provided a strong support for this overall picture of core-collapse SNe.Even prior to the core collapse, the evolved massive stars are experiencing significant neutrino emission, which is actually the most efficient mechanism of cooling after the phase of helium burning [6,7]. In the stellar environment, where both the matter density and the temperature may span quite a wide range, neutrinos are primarily produced in pairs by the plasma process γ * → ν + ν, the photo process γ + e − → e − + ν + ν, the pair process e + + e − → ν + ν and the bremsstrahlung e − + Ze → e − + Ze + ν + ν, where Ze stands for the heavy nuclei with the atomic number Z and ν (ν) denotes neutrinos (antineutrinos) of all three flavors [8][9][10][11][12][13][14].…”

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confidence: 99%

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Li¹,

Li²,

Wang³

et al. 2018

Phys. Rev. D

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In this paper, we show how to carry out a relatively more realistic and complete reconstruction of supernova neutrino spectra in the future large liquid-scintillator detectors, by implementing the method of singular value decomposition with a proper regularization. For a core-collapse supernova at a distance of 10 kpc in the Milky Way, itsν e spectrum can be precisely determined from the inverse beta-decay processν e þ p → e þ þ n, for which a 20 kiloton liquid-scintillator detector with the resolution similar to the Jiangmen Underground Neutrino Observatory may register more than 5000 events. We have to rely predominantly on the elastic neutrino-electron scattering ν þ e − → ν þ e − and the elastic neutrino-proton scattering ν þ p → ν þ p for the spectra of ν e and ν x , where ν denotes collectively neutrinos and antineutrinos of all three flavors and ν x for ν μ and ν τ as well as their antiparticles. To demonstrate the validity of our approach, we also attempt to reconstruct the neutrino spectra by using the time-integrated neutrino data from the latest numerical simulations of delayed neutrino-driven supernova explosions.

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“…The facility has been operating under the program of search for collapse neutrinos since the mid-1980 [7]. The observation time is T = 24.7 years.…”

Section: Resultsmentioning

confidence: 99%