%0 Journal Article
%T Bursts from internal shocks: is it really synchrotron emission?
%A Annalisa Celotti
%A Gabriele Ghisellini
%J Physics
%D 1999
%I arXiv
%X 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.
%U http://arxiv.org/abs/astro-ph/9906144v1