X-ray afterglows from gamma-ray bursts

Details X-ray afterglows from gamma-ray bursts X-ray afterglows from gamma-ray bursts

1997-03-24

arxiv.org/abs/astro-ph/9703150v1

Astronomy and Astrophysics

Astrophysics

15 pages, 2 postscript files with figures submitted to Astrophys. J. Letters, March 18, 1997

Scientific paper

10.1086/310751

We consider possible interpretations of the recently detected X- ray afterglow from the gamma-ray burst source GRB 970228. Cosmological and Galactic models of gamma-ray bursts predict different flux and spectral evolution of X-ray afterglows. We show that models based on adiabatic expansion of relativistic forward shocks require very efficient particle energization or post-burst re-acceleration during the expansion. Cooling neutron star models predict a very distinctive spectral and flux evolution that can be tested in current X-ray data.

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