On the nature of X-ray Flashes

Authors:
Robert Mochkovitch (1),
Frederic Daigne (1),
Celine Barraud (2),
Jean-Luc Atteia (2) ((1) Institut d’Astrophysique de Paris, (2) Observatoire Midi-Pyrenees)

Comments: 4 pages, 4 figures, to appear in “Gamma-ray bursts in the afterglow
era”, 3rd workshop, Rome 17-20 Sept. 2002

We have developed a toy model for internal shocks which has been used to
generate a large number of synthetic GRBs in order to find in the parameter
space the conditions which can lead to the formation of X-ray flashes. The key
condition appears to be a small contrast of the Lorentz factor in the
relativistic wind emitted by the central engine.

References and citations for this submission:

SLAC-SPIRES HEP (refers to ,
cited by, arXiv reformatted)