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Non-thermal neutrinos from supernovae leaving a magnetar

Horiuchi, Shunsaku and Suwa, Yudai and Takami, Hajime and Ando, Shin'ichiro and Sato, Katsuhiko (2008) Non-thermal neutrinos from supernovae leaving a magnetar. Monthly Notices of the Royal Astronomical Society, 391 (4). pp. 1893-1899. ISSN 0035-8711. doi:10.1111/j.1365-2966.2008.14000.x.

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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 ∼10^4 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 km^3 class detector such as IceCube, providing a means of probing supernova models and the presence of strong magnetic fields in the stellar envelope.

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Additional Information:© 2008 The Authors. Journal compilation © 2008 RAS. Accepted 2008 September 24. Received 2008 September 23; in original form 2008 July 1. Published Online: 24 November 2008. We are grateful to Kohta Murase for useful discussions. This study was supported by a grants-in-aid for Scientific Research from the Ministry of Education, Science and Culture of Japan (No. S19104006; SH and KS), Japan Society for Promotion of Science (YS and TH), Sherman Fairchild Foundation (SA) and World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan.
Funding AgencyGrant Number
Ministry of Education, Culture, Sports, Science and Technology (MEXT)S19104006
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Sherman Fairchild FoundationUNSPECIFIED
Subject Keywords:acceleration of particles; neutrinos; stars: magnetic fields; pulsars: general; supernovae: general
Issue or Number:4
Record Number:CaltechAUTHORS:HORmnras08b
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Official Citation:Shunsaku Horiuchi, Yudai Suwa, Hajime Takami, Shin'ichiro Ando, and Katsuhiko Sato Non-thermal neutrinos from supernovae leaving a magnetar MNRAS (2008) Vol. 391 1893-1899 doi:10.1111/j.1365-2966.2008.14000.x First published online December 21, 2008
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12916
Deposited By: Archive Administrator
Deposited On:12 Jan 2009 20:29
Last Modified:08 Nov 2021 22:33

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