GRB spectral turnover and the saturated Compton cooling model

Details GRB spectral turnover and the saturated Compton cooling model GRB spectral turnover and the saturated Compton cooling model

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..138..529l&link_type=abstract

Astronomy and Astrophysics Supplement, v.138, p.529-530

Astronomy and Astrophysics

Astrophysics

2

Gamma-Rays: Bursts, Gamma-Rays: Observations, Radiation Mechanisms: Non-Thermal, Techniques: Spectroscopic

Scientific paper

We revisit the different physical interpretations of the spectral break in GRB continuum and the low energy turnover, especially at the beginning of pulses. We argue that optically thin synchrotron emission can be ruled out in many cases. Alternative models are discussed. We then concentrate on one paricularly attractive model: saturated Comptonization of soft photons. We summarize the various predictions of this model and highlight the critical tests of this model that may be provided by existing and future data.

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