X-ray emission from gamma-ray bursters

Details X-ray emission from gamma-ray bursters X-ray emission from gamma-ray bursters

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...211l..15h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 211, no. 1, Feb. 1989, p. L15-L18.

Astronomy and Astrophysics

Astrophysics

11

Emission Spectra, Gamma Ray Bursts, Neutron Stars, X Rays, Absorption Spectra, Astronomical Models, Energy Spectra, Gamma Ray Spectra, Scattering Cross Sections, Stellar Coronas

Scientific paper

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.

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