X-ray emission from gamma-ray bursters.
Abstract
The X-ray and gamma-ray spectra of gamma-ray bursts are calculated in the framework of the model of Hameury et al. (1985), in which a hot region, of kT not less than m(c-sq), above a cooler photosphere (kT about a few keV) emits the observed radiation up to about 1 MeV. It is shown that this model easily accounts for the low value of the observed ratio L(x)/L(gamma) of soft X-ray to gamma-ray fluxes. It also naturally explains the presence and the width of narrow cyclotron absorption lines that have been detected in a number of bursts.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1989
- Bibcode:
- 1989A&A...211L..15H
- Keywords:
-
- Emission Spectra;
- Gamma Ray Bursts;
- Neutron Stars;
- X Rays;
- Absorption Spectra;
- Astronomical Models;
- Energy Spectra;
- Gamma Ray Spectra;
- Scattering Cross Sections;
- Stellar Coronas;
- Space Radiation