Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1065..231d&link_type=abstract
2008 NANJING GAMMA-RAY BURST CONFERENCE. AIP Conference Proceedings, Volume 1065, pp. 231-233 (2008).
Physics
Gamma-Ray Sources, Gamma-Ray Bursts, Kinetic Theory, Plasma Reactions
Scientific paper
Within our ``flreshell'' model we introduced a ``canonical'' GRB scenario which differentiates physically the ``proper GRB'' (P-GRB) emission when photons decouple, and the afterglow emission due to interaction of the accelerated baryons with the CircumBurst Medium (CBM). The ratio between energetics of the two components is ruled by the baryon loading of the flreshell. We here analyse the possibility that GRB050509b is the first case of a ``genuine'' short GRB the ones with smaller baryon loading. In such a case, the GRB050509b ``prompt emission'' would be dominated by the ``proper GRB'' and, moreover, the P-GRB total energy would be greater than the afterglow one. Our fit of the afterglow data and of the P-GRB energetics indicates that this source present the smallest baryon loading we ever encountered so far, being on the order of 10-4.
Bianco Carlo Luciano
Caito Letizia
de Barros Gustavo
Giovanna Dainotti Maria
Grazia Bernardini Maria
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