5 papers
The X-ray flaring activity of the galactic nucleus observed with XMM-Newton
E. Brion, A. Goldwurm, P. Goldoni +3
We report the results of XMM-Newton observations of Sgr A*, the radiative counterpart of the massive black hole at the nucleus of our Galaxy, performed in the frame of the guarante…
On the nature of X-ray Flashes
Robert Mochkovitch, Frederic Daigne, Celine Barraud +1
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…
Are X-ray flashes a peculiar class of (soft) gamma-ray bursts ?
Frederic Daigne, Celine Barraud, Robert Mochkovitch
Heise et al. (2001) have reported the identification of a new class of sources by Beppo-SAX, the so-called X-ray flashes (XRFs), which have many common properties with gamma-ray bu…
Gamma-ray bursts from internal shocks in a relativistic wind: an hydrodynamical study
F. Daigne, R. Mochkovitch
The internal shock model for gamma-ray bursts involves shocks taking place in a relativistic wind with a very inhomogeneous initial distribution of the Lorentz factor. We have deve…
The origin of the relativistic wind in gamma-ray bursts: MHD flow from a disk orbiting a stellar mass black hole ?
F. Daigne, R. Mochkovitch
We compute the mass loss rate from a disk orbiting a stellar mass black hole assuming the flow is guided along magnetic field lines attached to the disk. We then estimate the Loren…