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
1989 ◽  
Vol 136 ◽  
pp. 639-643
Author(s):  
Ervin J. Fenyves ◽  
Stephen N. Balog ◽  
David B. Cline ◽  
M. Atac

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.


Author(s):  
G. L. CASE ◽  
E. ANZALONE ◽  
M.L. CHERRY ◽  
J. C. RODI ◽  
J. C. LING ◽  
...  

2007 ◽  
Vol 473 (2) ◽  
pp. 351-356 ◽  
Author(s):  
K. S. Cheng ◽  
D. O. Chernyshov ◽  
V. A. Dogiel

2009 ◽  
Vol 18 (10) ◽  
pp. 1541-1544
Author(s):  
SERGIO COLAFRANCESCO

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.


Author(s):  
Jovana Petrovic ◽  
Tijana Prodanovic ◽  
Milos Kovacevic

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?.


2010 ◽  
Author(s):  
Andrzej Niedzwiecki ◽  
Fu-Guo Xie ◽  
Andrzej Zdziarski

2012 ◽  
Vol 427 (1) ◽  
pp. 589-594 ◽  
Author(s):  
M. V. Barkov ◽  
D. V. Khangulyan ◽  
S. B. Popov

2013 ◽  
Vol 432 (2) ◽  
pp. 1576-1586 ◽  
Author(s):  
Andrzej Niedźwiecki ◽  
Fu-Guo Xie ◽  
Agnieszka Stepnik

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