Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-05-16
Astronomy and Astrophysics
Astrophysics
4 pages, add one figure, accepted by A&A Letters
Scientific paper
The fireball model of gamma-ray bursts predicted that when the energetic blast wave encountered the surrounding medium, there will be afterglow emission, and the subsequent afterglow observations appeared to confirm this prediction. In this simplest fireball model, the electrons have been accelerated to a power law energy distribution in a relativistic blast wave, then they give afterglow emission through synchrotron radiation. Up to now synchrotron radiation is believed to be the main mechanism of GRB emission, however, here we will show that under some circumstances, the inverse Compton scattering (ICS) may play an important role, and can change the light curves of GRB afterglows. Here we investigate the effects of ICS in the relativistic case (the surrounding medium density $\rho \propto r^{-2}$) and in the non-relativistic case (for both $\rho =constant$ and $\rho \propto r^{-2}$), we find that in the relativistic case the effect of ICS is usually important, while in the non-relativistic case, this effect is usually unimportant, unless the surrounding medium density is very high. We show that if ICS is important, then it can flatten and steepen the light curves of GRB afterglows, and this may provide the explanation for some afterglow observations.
Lu Tan
Wei Da-Ming
No associations
LandOfFree
The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves 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 The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-441155