Physical Society Colloquium

Special Physical Society Colloquium

The Sky in the Hard X-Rays

Rashid Sunyaev

Max-Planck-Institut für Astrophysik

This talk is based on the recent results from INTEGRAL orbital observatory and includes following topics:

a) Extremely bright and narrow electron-positron annihilation line from central parts of our Galaxy gives information about properties of interstellar matter.

b) Central supermassive black hole of our Galaxy SGR A* was million times brighter 400 years ago: SGR B2 molecular cloud as a natural mirror.

c) Heavily obscured High Mass X-Ray binaries in the Galactic plane.

d) The population of the heavily obscured local Active Nuclei of Galaxies discovered during INTEGRAL shallow sky survey.

e) Eclipse of the bright X-Ray sky by the dark Earth. The spectrum of Cosmic X-Ray Background Radiation measured during observations of the Earth by INTEGRAL. The growth of supermassive black holes in AGNs and intensity of X-ray background.