8th HEAD Meeting, 8-11 September, 2004
Session 23 Neutrinos and Cosmic Rays
Poster, Friday, September 10, 2004, 9:00am-10:00pm

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[23.01] Cosmic Rays and Neutrinos from Gamma Ray Bursts

C. D. Dermer (NRL), A. Atoyan (UdeM), S.D. Wick (NRL)

A model is proposed for the origin of cosmic rays (CRs) from ~1e14 eV/nucleon to the highest energies (>1e20 eV). GRBs are assumed to inject CR protons and ions into the interstellar medium of star-forming galaxies--including the Milky Way--with a power-law spectrum extending to a maximum energy ~1e20 eV. The CR spectrum near the knee is fit with CRs trapped in the Galactic halo that were accelerated and injected by an earlier Galactic GRB. These CRs diffuse in the disk and halo of the Galaxy due to gyroresonant pitch-angle scattering with MHD turbulence in the Galaxy's magnetic field. Ultra-high energy CRs (UHECRs), with energies above the ankle energy at >3e18 eV, are assumed to propagate rectilinearly with their spectrum modified by photo-pion, photo-pair, and expansion losses. We fit the measured UHECR spectrum assuming comoving luminosity densities of GRB sources consistent with possible star formation rate histories of the Universe. Calculations show that 100 TeV to 100 PeV neutrinos could be detected several times per year from all GRBs with kilometer-scale neutrino detectors such as IceCube.

If you would like more information about this abstract, please follow the link to http://heseweb.nrl.navy.mil/gamma/~dermer/default.htm. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: dermer@gamma.nrl.navy.mil

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.