Delphine Porquet

X-ray properties of the Galactic center

I will review the present knowledge about the X-ray properties of the Galactic center that is one of the most richest region of the sky hosting numerous astrophysical objects such as X-ray binaries, SNR, non-thermal filaments, molecular clouds and last be not least the closest supermassive black hole. Sgr A* with a mass of about 4 millions solar masses is extremely faint, though a certain level of activity has been revealed through the detection of flares. Therefore, SgrA* is the ideal target to investigate the accretion and ejection physics in the case of extremely low accretion rate onto a supermassive black hole where black holes are thought to spend most of their lifetime, and its impact on its neighbourhood .