Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..384..897t&link_type=abstract
Gamma-ray bursts: 3rd Huntsville symposium. AIP Conference Proceedings, Volume 384, pp. 897-906 (1996).
Astronomy and Astrophysics
Astrophysics
Gamma-Ray Sources, Gamma-Ray Bursts, Fundamental Aspects Of Astrophysics, Neutron Stars
Scientific paper
The main physical constraints on the SGR emission mechanism are considered, and different theoretical approaches are summarized and critiqued. The combination of weak spectral evolution and hyper-Eddington luminosities provides an especially stringent test for models. Cooling of a pair-photon plasma trapped in the magnetosphere of a neutron star is argued to be the most promising radiative mechanism. I discuss whether a very strong B-field is needed to achieve L>>Ledd, and summarize the case for Bdipole~6×1014 G in SGR 0525-66. The physics of radiative transport in very strong B, and the observational evidence pro/con SGR sources as accreting neutron stars are discussed.
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