A Leptonic Model of Steady High-Energy Gamma-Ray Emission from Sgr A${}^{\ast }$

Masaaki Kusunose, Fumio Takahara

Recent observations of Sgr A${}^{\ast }$ by Fermi and HESS have detected steady gamma-ray emission in the GeV and TeV bands. We present a new model to explain the GeV gamma-ray emission by…