論文

査読有り
2015年10月

Neutrino flavor ratios modified by cosmic-ray secondary acceleration

PHYSICAL REVIEW D
  • Norita Kawanaka
  • ,
  • Kunihito Ioka

92
8
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevD.92.085047
出版者・発行元
AMER PHYSICAL SOC

Acceleration of pi's and mu's modifies the flavor ratio at Earth (at astrophysical sources) of neutrinos produced by pi decay, nu(e):nu(mu):nu(tau), from 1: 1: 1 (1: 2: 0) to 1: 1.8: 1.8 (0: 1: 0) at high energy, because pi's decay more than mu's during secondary acceleration. The neutrino spectrum accompanies a flat excess, differently from the case of energy losses. With the flavor spectra, we can probe time scales of cosmic-ray acceleration and shock dynamics. We obtain general solutions of convection-diffusion equations and apply them to gamma-ray bursts, which may have the flavor modification at around PeV-EeV detectable by IceCube and next-generation experiments.

リンク情報
DOI
https://doi.org/10.1103/PhysRevD.92.085047
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000363793100004&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevD.92.085047
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • Web of Science ID : WOS:000363793100004

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