Origin of Thermal and Non-Thermal Hard X-ray Emission from the Galactic Center
arXiv:0906.2247 · doi:10.1093/pasj/61.5.1099
Abstract
We analyse new results of Chandra and Suzaku which found a flux of hard X-ray emission from the compact region around Sgr A (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.
to be published in PASJ, v.61, No.5, 2009
References in corpus (12)
- Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
- Discrete sources as the origin of the Galactic X-ray ridge emission
- A Catalog of X-ray Point Sources from Two Megaseconds of Chandra Observations of the Galactic Center
- Continuum gamma-ray emission from light dark matter positrons and electrons
- Cosmic-Ray Heating of Molecular Gas in the Nuclear Disk: Low Star Formation Efficiency
- Annihilation Emission from the Galactic Black Hole
- Resolving the Galactic X-ray background
- Spectral Study of the Galactic Ridge X-ray Emission with Suzaku
- Diffuse Gamma-ray Emission from the Galactic Center - A Multiple Energy Injection Model
- In-situ acceleration of subrelativistic electrons in the Coma halo and the halo's influence on the Sunyaev-Zeldovich effect
- Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Center
- An analysis of electron distributions in galaxy clusters by means of the flux ratio of iron lines FeXXV and XXVI
Cited by in corpus (12)
- Finite, Intense Accretion Bursts from Tidal Disruption of Stars on Bound Orbits
- Wild at Heart:-The Particle Astrophysics of the Galactic Centre
- Origin of the Fermi Bubble
- Non-Thermal Insights on Mass and Energy Flows Through the Galactic Centre and into the Fermi Bubbles
- K-shell Emission of Neutral Iron Line from Sgr B2 Excited by Subrelativistic Protons
- The Fermi Bubble as a Source of Cosmic Rays in the Energy Range > 10E15 eV
- A past capture event at Sagittarius A* inferred from the fluorescent X-ray emission of Sagittarius B clouds
- Tidal disruptions of separated binaries in galactic nuclei
- On the Origin of the 6.4 keV Line in the Galactic Center Region
- New Constraints on Cosmic Particle Populations at the Galactic Center using X-ray Observations of the Molecular Cloud Sagittarius B2
- Particle Propagation in the Galactic Center and Spatial Distribution of Non-Thermal X-rays
- Sources and Radiations of the Fermi Bubbles