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Cooling of Accelerated Nucleons and Neutrino Emission in Gamma-Ray Bursts

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Katsuaki Asano1

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Using Monte Carlo simulations, we demonstrate photopion production from Fermi-accelerated protons and the resulting neutrino production in gamma-ray bursts. Unless internal shocks occur at quite large distances from the center, ultra-high-energy protons are depleted by photopion production and synchrotron radiation. Internal shocks at fiducial distance cause neutrino bursts, which accompany gamma-ray bursts originating from electromagnetic cascades.


Subject headings

cosmic rays; gamma rays: bursts; neutrinos


Dates

Issue 2 (2005 April 20)

Received 2004 July 28, accepted for publication 2005 January 13



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