We report on observations of Sgr A*, the radiative counterpart of the massive black hole in the center of our Galaxy, with XMM-Newton, performed in the frame of the guaranteed time survey program of the galactic center region. The discovery of bright X-ray flares from Sgr~A* with Chandra in October 2000 have opened new perspectives to understand the processes at work in this object and in general in black holes accreting at low accretion rates. We report here the detection and the important results obtained with XMM-Newton on the high-energy flaring activity of Sgr A* during the galactic center survey and we discuss implications on the models of the source and future observational perspectives.
SF2A-2003: Semaine de l'Astrophysique Francaise
- Pub Date:
- 4 pages, 3 figures, proc. of the SF2A conf. held in Bordeaux, France, June 2003, eds.: F. Combes, D. Barret and T. Contini, EdP-Sciences Conf. Series