Is GRB 050509b a“genuineshort GRB?
Within our“fireshellmodel we introduced a“canonicalGRB scenario which differentiates physically the“properGRB(P-GRB)emission when photons decouple,and the afterglow emission due to interaction of the accelerated baryonswith the CircumBurst Medium(CBM)．The ratio between energetics of the two components is ruled by the baryon loadingof the fireshell．We here analyse the possibility that GRB050509b is the first case of a“genuineshort GRB the ones withsmaller baryon loadmg．In such a case,the GRB050509b“prompt emissionwould be dominated by the“proper GRBand,moreover,the P-GRB total energy would be greater than the afterglow one．Our fit of the afterglow data and of the P-GRBenergetics indicates that this source present the smallest baryon loading we ever encountered so far,being on the order of10-4.
Short GRBs High energy emission
G.de Barros M.G.Bernardini C.L.Bianco L.Caito M.G.Dainotti R.Guida R.Ruffini
La Sapienza,Piazzale Aldo Moro 5,00185 Rome,Italy
国际会议
2008 NanJing Gamma-Ray Burst Conference(2008年伽马暴国际研讨会)
南京
英文
231-233
2008-06-23（万方平台首次上网日期，不代表论文的发表时间）