2015年10月
Neutrino flavor ratios modified by cosmic-ray secondary acceleration
PHYSICAL REVIEW D
- ,
- 巻
- 92
- 号
- 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
- ID情報
-
- DOI : 10.1103/PhysRevD.92.085047
- ISSN : 2470-0010
- eISSN : 2470-0029
- Web of Science ID : WOS:000363793100004