Title: Origin of X-ray and gamma-ray emission from the Galactic central region,
Abstract: We study a possible connection between different non-thermal emissions from
the inner few parsecs of the Galaxy. We analyze the origin of the gamma-ray
source 2FGL J1745.6-2858 (or 3FGL J1745.6-2859c) in the Galactic Center and the
diffuse hard X-ray component recently found by NuSTAR, as well as the radio
emission and processes of hydrogen ionization from this area. We assume that a
source in the GC injected energetic particles with power-law spectrum into the
surrounding medium in the past or continues to inject until now. The energetic
particles may be protons, electrons or a combination of both. These particles
diffuse to the surrounding medium and interact with gas, magnetic field and
background photons to produce non-thermal emissions. We study the spectral and
spatial features of the hard X-ray emission and gamma-ray emission by the
particles from the central source. Our goal is to examine whether the hard
X-ray and gamma-ray emissions have a common origin. Our estimations show that
in the case of pure hadronic models the expected flux of hard X-ray emission is
too low. Despite protons can produce a non-zero contribution in gamma-ray
emission, it is unlikely that they and their secondary electrons can make a
significant contribution in hard X-ray flux. In the case of pure leptonic
models it is possible to reproduce both X-ray and gamma-ray emissions for both
transient and continuous supply models. However, in the case of continuous
supply model the ionization rate of molecular hydrogen may significantly exceed
the observed value.