Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1279..156p&link_type=abstract
DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS. AIP Conference Proceedings, Volume 1279, pp. 156-162 (2010).
Astronomy and Astrophysics
Astronomy
Gamma-Ray Sources (Astronomical), Shock Waves, Interstellar Magnetic Fields, Jets, Gamma-Ray Sources, Gamma-Ray Bursts, Planetary Bow Shocks, Interplanetary Shocks, Magnetic And Electric Fields, Polarization Of Starlight, Jets And Bursts, Galactic Winds And Fountains
Scientific paper
I review the development of the relativistic blast-wave model for GRB afterglows, in which the delayed emission is synchrotron and, possibly, inverse Compton from electrons accelerated by the forward shock that energizes the burst ambient medium or the reverse shock that crosses the incoming ejecta. This model is tested and its features constrained using afterglow observations at radio, optical, X-ray, and GeV photon energies. Modeling of the afterglow broadband emission allows the determination of the outflow's physical parameters, such as collimation and energetics, circum-burst medium density, its radial stratification, and of forward-shock microphysical parameters. The slowly-decaying radio afterglows (weeks after trigger) and the fast-decaying early optical afterglows (up to 1 ks) provide evidence for a temporary contribution from the reverse-shock. The chromatic X-ray light-curve breaks and the afterglows with well-coupled optical and X-ray light-curves and chromatic breaks suggest the existence of an outflow inner to the blast-wave, which bulk-scatters the forward-shock emission and injects energy into it.
No associations
LandOfFree
Afterglow Physics 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 Afterglow Physics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Afterglow Physics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1402942