Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-06-12
Astronomy and Astrophysics
Astrophysics
16 pages, version improved following the referees' comments, conclusions unchanged, accepted for publication in ApJ
Scientific paper
10.1088/0004-637X/692/2/1662
In the popular internal shock model for the prompt emission of gamma-ray bursts (GRBs), collisions between a series of relativistic shells generate lots of paired forward and reverse shocks. We show that the synchrotron emission produced by the forward and reverse shocks respectively could peak at two quite different energy bands if the Lorentz factors of these two types of shocks are significantly different with each other (e.g., one shock is relativistic and the other is Newtonian). We then investigate whether this scenario is applicable to the case of GRB 080319B and find that a bimodal distribution of the shell Lorentz factors, peaking at $\sim400$ and $\sim10^5$, is required. In addition, this scenario predicts an accompanying inverse-Compton (IC) GeV emission with a luminosity comparable to (not much higher than) that of the synchrotron MeV emission, which can be tested with future \textit{Fermi} observations.
Dai Gao Z.
Wang Xiang-Yu
Yu Yun-Wei
No associations
LandOfFree
Optical and gamma-ray emissions from internal forward-reverse shocks: application to GRB 080319B? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Optical and gamma-ray emissions from internal forward-reverse shocks: application to GRB 080319B?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical and gamma-ray emissions from internal forward-reverse shocks: application to GRB 080319B? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-690585