Fireballs with a Neutron Component

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dc.creatorBeloborodov, Andrei M.
dc.date2003-02-04
dc.date.accessioned2026-07-07T02:07:28Z
dc.date.available2026-07-07T02:07:28Z
dc.descriptionStandard GRB fireballs must carry free neutrons. This crucially changes the mechanism of fireball deceleration by an external medium. As the ion fireball decelerates, the coasting neutrons form a leading front. They gradually decay, leaving behind a relativistic trail of decay products mixed with the ambient medium. The ion fireball sweeps up the trail and drives a shock wave in it. Thus, observed afterglow emission is produced in the neutron trail. The impact of neutrons turns off at 10^{17}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.
dc.descriptiontalk at "Gamma-Ray Bursts in the Afterglow Era: 3rd Workshop", Rome, September 2002
dc.identifierhttps://arxiv.org/abs/astro-ph/0302057
dc.identifierhttp://arxiv.org/abs/astro-ph/0302057
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5706
dc.subjectAstrophysics
dc.titleFireballs with a Neutron Component
dc.typetext

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