Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-18
Astrophys.J.659:389-406,2007
Astronomy and Astrophysics
Astrophysics
36 pages including 17 figures, submitted to ApJ, comments welcome
Scientific paper
10.1086/512079
Recent observations of the Galactic center in high-energy gamma-rays (above 0.1TeV) have opened up new ways to study this region, from understanding the emission source of these high-energy photons to constraining the environment in which they are formed. We present a revised theoretical density model of the inner 5pc surrounding Sgr A* based on the fact that the underlying structure of this region is dominated by the winds from the Wolf-Rayet stars orbiting Sgr A*. An ideal probe and application of this density structure is this high energy gamma-ray emission. We assume a proton-scattering model for the production of these gamma-rays and then determine first whether such a model is consistent with the observations and second whether we can use these observations to further constrain the density distribution in the Galactic center.
Bélanger Guillaume
Fryer Christopher L.
Hungerford Aimee
Liu Siming
Rockefeller Gabriel
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