scholarly journals Gamma‐Ray Emission from Advection‐dominated Accretion Flows around Black Holes: Application to the Galactic Center

1997 ◽  
Vol 486 (1) ◽  
pp. 268-275 ◽  
Author(s):  
Rohan Mahadevan ◽  
Ramesh Narayan ◽  
Julian Krolik
Keyword(s):  
Black Holes ◽  
Gamma Ray ◽  
Galactic Center ◽  
Accretion Flows ◽  
Gamma Ray Emission

scholarly journals Study of the Galactic Center with a High Resolution Gamma Ray Telescope

1989 ◽  
Vol 136 ◽  
pp. 639-643
Author(s):  
Ervin J. Fenyves ◽  
Stephen N. Balog ◽  
David B. Cline ◽  
M. Atac
Keyword(s):  
Black Holes ◽  
Active Galactic Nuclei ◽  
Gamma Ray ◽  
Galactic Center ◽  
Galactic Nuclei ◽  
Seyfert Galaxies ◽  
Hole Formation ◽  
Massive Black Holes ◽  
General Outcome ◽  
Enormous Amount

It is generally accepted that massive black holes are the most likely source for the energy radiated from active galactic nuclei, and may explain the enormous amount of energy emitted by quasars, radio galaxies, Seyfert galaxies, and BL Lacertid objects. Although the detailed mechanisms of the black hole formation in galactic nuclei are not clear at present, it seems to be quite possible that the formation of massive black holes is a general outcome of the evolution of galactic nuclei.

LONG-TERM MONITORING OF THE HARD X-RAY/GAMMA-RAY EMISSION FROM GALACTIC BLACK HOLES WITH BATSE

2008 ◽  
Author(s):  
G. L. CASE ◽  
E. ANZALONE ◽  
M.L. CHERRY ◽  
J. C. RODI ◽  
J. C. LING ◽  
...  
Keyword(s):  
Black Holes ◽  
Gamma Ray ◽  
X Ray ◽  
Long Term Monitoring ◽  
Gamma Ray Emission ◽  
Term Monitoring

scholarly journals Diffuse gamma-ray emission from the Galactic center – a multiple energy injection model

2007 ◽  
Vol 473 (2) ◽  
pp. 351-356 ◽  
Author(s):  
K. S. Cheng ◽  
D. O. Chernyshov ◽  
V. A. Dogiel
Keyword(s):  
Gamma Ray ◽  
Galactic Center ◽  
Injection Model ◽  
Gamma Ray Emission

A SHORT, CRITICAL REVIEW ON GAMMA-RAY EMISSION FROM GALAXY CLUSTERS

2009 ◽  
Vol 18 (10) ◽  
pp. 1541-1544
Author(s):  
SERGIO COLAFRANCESCO
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Cosmic Rays ◽  
Galaxy Clusters ◽  
Critical Review ◽  
Particle Physics ◽  
Gamma Ray ◽  
Gamma Ray Emission ◽  
The Impact

We discuss the relevance of gamma-ray observations of galaxy clusters, to unveil several issues that are relevant for Cosmology and Astro-Particle Physics of cosmic structures: the nature of Dark Matter, the origin of cosmic rays and the impact of black holes.

scholarly journals Understanding the diffuse gamma ray emission of the milky way - from supernova remnants to dark matter

2019 ◽  
pp. 17-22
Author(s):  
Jovana Petrovic ◽  
Tijana Prodanovic ◽  
Milos Kovacevic
Keyword(s):  
Dark Matter ◽  
Supernova Remnants ◽  
Milky Way ◽  
Gamma Ray ◽  
Galactic Center ◽  
Galactic Disk ◽  
High Energy ◽  
Data Sets ◽  
Source Population ◽  
Gamma Ray Emission

Diffuse gamma ray emission from the Galactic center at 2-3 GeV, as well as the 12 TeV gamma ray excess in the Galactic disk, remain open for debate and represent the missing puzzles in the complete picture of the high-energy Milky Way sky. Our papers emphasize the importance of understanding all of the populations that contribute to the diffuse gamma background in order to discriminate between the astrophysical sources such as supernova remnants and pulsars, and something that is expected to be seen in gamma rays and is much more exotic - dark matter. We analyze two separate data sets that have been measured in different energy ranges from the ?Fermi-LAT? and ?Milagro? telescopes, using these as a powerful tool to limit and test our analytical source population models. We model supernova remnants and pulsars, estimating the number of still undetected ones that contribute to the diffuse background, trying to explain both the Galactic center and the 12 TeV excess. Furthermore, we aim to predict the number of soon to be detected sources with new telescopes, such as the ?HAWC?.

scholarly journals X/gamma-ray emission from hot accretion flows in AGNs

2010 ◽  
Author(s):  
Andrzej Niedzwiecki ◽  
Fu-Guo Xie ◽  
Andrzej Zdziarski
Keyword(s):  
Gamma Ray ◽  
Accretion Flows ◽  
Gamma Ray Emission

scholarly journals Jets and gamma-ray emission from isolated accreting black holes

2012 ◽  
Vol 427 (1) ◽  
pp. 589-594 ◽  
Author(s):  
M. V. Barkov ◽  
D. V. Khangulyan ◽  
S. B. Popov
Keyword(s):  
Black Holes ◽  
Gamma Ray ◽  
Gamma Ray Emission

scholarly journals Gamma-ray emission from proton–proton interactions in hot accretion flows

2013 ◽  
Vol 432 (2) ◽  
pp. 1576-1586 ◽  
Author(s):  
Andrzej Niedźwiecki ◽  
Fu-Guo Xie ◽  
Agnieszka Stepnik
Keyword(s):  
Gamma Ray ◽  
Proton Proton ◽  
Accretion Flows ◽  
Gamma Ray Emission
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