Bursts from internal shocks: is it really synchrotron emission?

Details Bursts from internal shocks: is it really synchrotron emission? Bursts from internal shocks: is it really synchrotron emission?

1999-06-08

arxiv.org/abs/astro-ph/9906144v1

Astronomy and Astrophysics

Astrophysics

4 pages, contributed paper for the meeting: "Gamma-ray bursts: the first three minutes", Editors: J. Poutanen and R. Svensson

Scientific paper

Within the standard internal shock scenario, synchrotron emission would produce a spectrum with slope F(v) proportional to v^(-1/2), as immediate consequence of the cooling timescale being shorter than the integration time. This is in disagreement with the harder observed spectra, indicating that a different mechanism is responsible for the burst emission. Furthermore in this scenario pair production is expected when photons produced by inverse Compton emission are taken into account.

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