HEAD 2003 Meeting
Session 16. Gamma-ray Bursts III
Poster, Sunday-Wednesday, March 23, 2003, Duration of Meeting

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[16.05] Neutrons in GRBs

A. M. Beloborodov (CITA)

Standard GRB fireballs must carry free neutrons. This crucially changes the mechanism of fireball deceleration by an external medium. The impact of neutrons turns off at ~1017 cm from the explosion center, and here a spectral transition is expected in GRB afterglows. Absence of neutron signatures would point to absence of baryons and a dominant Poynting flux in the fireballs.

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Bulletin of the American Astronomical Society, 35#2
© 2003. The American Astronomical Soceity.