Non-thermal neutrinos from supernovae leaving a magnetar
Under the fossil field hypothesis of the origin of magnetar magnetic fields, the magnetar inherits its magnetic field from its progenitor. We show that during the supernova of such a progenitor, protons may be accelerated to ∼104 GeV as the supernova shock propagates in the stellar envelope. Inelast...
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2008-12, Vol.391 (4), p.1893-1899 |
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creator | Horiuchi, Shunsaku Suwa, Yudai Takami, Hajime Ando, Shin'ichiro Sato, Katsuhiko |
description | Under the fossil field hypothesis of the origin of magnetar magnetic fields, the magnetar inherits its magnetic field from its progenitor. We show that during the supernova of such a progenitor, protons may be accelerated to ∼104 GeV as the supernova shock propagates in the stellar envelope. Inelastic nuclear collisions of these protons produce a flash of high-energy neutrinos arriving a few hours after thermal (10 MeV) neutrinos. The neutrino flash is characterized by energies up to O(100) GeV and durations seconds to hours, depending on the progenitor: those from smaller Type Ibc progenitors are typically shorter in duration and reach higher energies compared to those from larger Type II progenitors. A Galactic Type Ib supernova leaving behind a magnetar remnant will yield up to ∼160 neutrino-induced muon events in Super-Kamiokande, and up to ∼7000 in a km3 class detector such as IceCube, providing a means of probing supernova models and the presence of strong magnetic fields in the stellar envelope. |
doi_str_mv | 10.1111/j.1365-2966.2008.14000.x |
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We show that during the supernova of such a progenitor, protons may be accelerated to ∼104 GeV as the supernova shock propagates in the stellar envelope. Inelastic nuclear collisions of these protons produce a flash of high-energy neutrinos arriving a few hours after thermal (10 MeV) neutrinos. The neutrino flash is characterized by energies up to O(100) GeV and durations seconds to hours, depending on the progenitor: those from smaller Type Ibc progenitors are typically shorter in duration and reach higher energies compared to those from larger Type II progenitors. 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source | Wiley Online Library Journals Frontfile Complete; Oxford Open |
subjects | acceleration of particles Astronomy Astrophysics Earth, ocean, space Exact sciences and technology Magnetic fields Neutrinos Particle physics pulsars: general Stars & galaxies stars: magnetic fields Supernovae supernovae: general |
title | Non-thermal neutrinos from supernovae leaving a magnetar |
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