scholarly journals The Origin of Diffuse X‐Ray and γ‐Ray Emission from the Galactic Center Region: Cosmic‐Ray Particles

2007 ◽  
Vol 656 (2) ◽  
pp. 847-869 ◽  
Author(s):  
F. Yusef‐Zadeh ◽  
M. Muno ◽  
M. Wardle ◽  
D. C. Lis
Keyword(s):  
Galactic Center ◽  
Cosmic Ray ◽  
X Ray ◽  
Center Region ◽  
Γ Ray

scholarly journals Gamma-Ray Imaging of the Galactic Center Region

1989 ◽  
Vol 136 ◽  
pp. 581-585
Author(s):  
W. R. Cook ◽  
D. M. Palmer ◽  
T. A. Prince ◽  
S. M. Schindler ◽  
C. H. Starr ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Galactic Center ◽  
Coded Aperture ◽  
Center Region ◽  
Gamma Ray Imaging ◽  
The Galaxy ◽  
Γ Ray ◽  
Luminous Objects

The Caltech imaging γ-ray telescope was launched by balloon from Alice Springs, NT, Australia and performed observations of the galactic center during the period 12.62 to 13.00 April 1988 UT. The first coded-aperture images of the galactic center region at energies above 30 keV show a single strong γ-ray source which is located 0.7±0.1° from the galactic nucleus and is tentatively identified as 1E1740.7-2942. If the source is at the distance of the galactic center, it is one of the most luminous objects in the galaxy at energies from 35 to 200 keV.

X-ray bursts from the source A1742-294 in the Galactic-center region

2001 ◽  
Vol 27 (8) ◽  
pp. 501-506 ◽  
Author(s):  
A. A. Lutovinov ◽  
S. A. Grebenev ◽  
M. N. Pavlinsky ◽  
R. A. Sunyaev
Keyword(s):  
Galactic Center ◽  
X Ray ◽  
Center Region

scholarly journals Unusual Diffuse X‐Ray Source in the Galactic Center Region

2002 ◽  
Vol 565 (2) ◽  
pp. 1017-1021 ◽  
Author(s):  
Atsushi Senda ◽  
Hiroshi Murakami ◽  
Katsuji Koyama
Keyword(s):  
Galactic Center ◽  
X Ray ◽  
Center Region

High-energy X-ray observations of the Galactic center region

1985 ◽  
Vol 290 ◽  
pp. 557 ◽  
Author(s):  
F. K. Knight ◽  
W. N., III Johnson ◽  
J. D. Kurfess ◽  
M. S. Strickman
Keyword(s):  
Galactic Center ◽  
High Energy ◽  
X Ray ◽  
Center Region

The Origin of X-Ray Emission from a Galactic Center Molecular Cloud: Low-Energy Cosmic-Ray Electrons

2002 ◽  
Vol 568 (2) ◽  
pp. L121-L125 ◽  
Author(s):  
F. Yusef-Zadeh ◽  
C. Law ◽  
M. Wardle
Keyword(s):  
Molecular Cloud ◽  
Galactic Center ◽  
Cosmic Ray ◽  
Low Energy ◽  
X Ray

Hard X-ray observation of galactic center region

1991 ◽  
Author(s):  
A. Bazzano ◽  
C. La Padula ◽  
P. Ubertini ◽  
R. K. Sood
Keyword(s):  
Galactic Center ◽  
X Ray ◽  
Center Region

scholarly journals 10.7. Absorption columns with bright X-ray sources near the galactic center: — mass estimation in the Galactic center region

1998 ◽  
Vol 184 ◽  
pp. 443-444 ◽  
Author(s):  
Masaaki Sakano ◽  
Mamiko Nishiuchi ◽  
Yoshitomo Maeda ◽  
Katsuji Koyama ◽  
Jun Yokogawa
Keyword(s):  
Simple Form ◽  
Total Mass ◽  
Column Density ◽  
Galactic Center ◽  
Galactic Plane ◽  
Angular Distance ◽  
Mass Determination ◽  
Mass Estimation ◽  
X Ray ◽  
Center Region

We report the column density distribution to the Galactic Center region using the X-ray binary observations with the X-ray satellite ASCA, and demonstrate a new method of the total mass determination near the Galactic Center. The column densities are given by a simple form as a function of the angular distance from the Galactic Plane. Assuming a disklike mass distribution of 500 pc radius, we estimate the total mass to be ~ 6 × 107M⊙.

scholarly journals HEAO-1 Diffuse Soft X-Ray Sky Maps

1984 ◽  
Vol 81 ◽  
pp. 219-221
Author(s):  
John A. Nousek ◽  
Gordon P. Garmire ◽  
George Weaver
Keyword(s):  
Galactic Center ◽  
Energy Interval ◽  
Background Intensity ◽  
X Ray ◽  
The North ◽  
Center Region ◽  
Local Emission ◽  
North Polar ◽  
X Ray Background

Maps of the diffuse soft X-ray background intensity are presented, spanning four energy intervals. The lowest energy interval (0.18-0.56 keV) is dominated by local emission, while the next two intervals (0.56-1.0 keV and 1.0-1.4 keV) reveal more distant and more sharply defined structures. Enlarged maps of several of these structures are presented, including the North Polar Spur, the Galactic Center region and the Eridanus Loop.

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