TeV gamma rays from Sgr A*

Details TeV gamma rays from Sgr A* TeV gamma rays from Sgr A*

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..745..409n&link_type=abstract

HIGH ENERGY GAMMA-RAY ASTRONOMY: 2nd International Symposium on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astronomy

5

Galactic Center, Bar, Circumnuclear Matter, And Bulge, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

Accreting Black Holes (BHs) are believed to be sites of possible particle acceleration with favorable conditions also for effective gamma-ray production. However, because of photon-photon pair production, the high energy gamma-ray emission of these objects (both of stellar mass and super-massive BHs) is generally suppressed, and consequently the unique information on possible particle acceleration processes near the event horizon of the BH is essentially lost. Fortunately this is not the case for the super-massive BH located at the dynamical center of our Galaxy (Sgr A*), which thanks to its extraordinary low bolometric luminosity is transparent for gamma-rays up to very high energies. We discuss different scenarios of gamma-ray production in Sgr A*, and show that for a reasonable set of parameters one can expect detectable gamma-ray fluxes of both hadronic and electronic origin.

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