Origin of Thermal and Non-Thermal Hard X-ray Emission from the Galactic Center

Details Origin of Thermal and Non-Thermal Hard X-ray Emission from the Galactic Center Origin of Thermal and Non-Thermal Hard X-ray Emission from the Galactic Center

2009-06-12

arxiv.org/abs/0906.2247v1

PoS Integral08:029,2008

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

to be published in PASJ, v.61, No.5, 2009

Scientific paper

We analyse new results of Chandra and Suzaku which found a flux of hard X-ray emission from the compact region around Sgr A$^\ast$ (r ~ 100 pc). We suppose that this emission is generated by accretion processes onto the central supermassive blackhole when an unbounded part of captured stars obtains an additional momentum. As a result a flux of subrelativistic protons is generated near the Galactic center which heats the background plasma up to temperatures about 6-10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.

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