Internal Shock Model and the High Energy Emission from GRBs

Details Internal Shock Model and the High Energy Emission from GRBs Internal Shock Model and the High Energy Emission from GRBs

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.0726b&link_type=abstract

American Astronomical Society, HEAD meeting #12, #7.26

Physics

Scientific paper

Using a time-dependent numerical model where the prompt gamma-ray burst emission is calculated in the framework of the internal shock model on a broad energy range (from soft X-ray to GeV energies), we compute gamma ray burst light curves and time-evolving spectra. We show how the spectral evolution in this model is determined
by the evolution of the physical conditions in the shocked regions and by the dominant radiative process for the effective microphysics parameters. Model predictions are confronted to the observations in the standard sub-MeV energy range, as well as with high energy bands observed by Fermi. In the soft gamma-ray range
we considered the evolution of the pulse shape in different energy channels and the
empirical hardness-intensity correlation; the scenario where the soft gamma-ray
component is due to synchrotron radiation from shock accelerated electrons gives
the best agreement with observations. In this scenario a variable inverse Compton
component is expected at high energies (>100MeV). We examine the effect of
this component on the observed light curve and spectral properties. In particular, we
investigate if the properties of Fermi LAT observations (the delayed onset of high
energy component, its prolonged duration with respect to GBM emission) can be
accommodated within our model.

Affiliated with

Also associated with

No associations

Rating

Internal Shock Model and the High Energy Emission from GRBs 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 Internal Shock Model and the High Energy Emission from GRBs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal Shock Model and the High Energy Emission from GRBs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1402322