The Fluctuations of the Cosmic X-Ray Background as a Sensitive Tool to the Universal Source Distribution

1981 ◽  
pp. 277-278
Author(s):  
P. Giommi ◽  
G. F. Bignami
Keyword(s):  
Source Distribution ◽  
X Ray ◽  
Sensitive Tool ◽  
X Ray Background

scholarly journals The Fluctuations of the Cosmic X-Ray Background as a Sensitive Tool to the Universal Source Distribution

1981 ◽  
Vol 94 ◽  
pp. 277-278
Author(s):  
P. Giommi ◽  
G. F. Bignami
Keyword(s):  
Low Energy ◽  
Experimental Results ◽  
Space Distribution ◽  
Source Distribution ◽  
X Ray ◽  
Definite Relation ◽  
Sensitive Tool ◽  
X Ray Background ◽  
Flux Curve

Recent experimental results (Giacconi et al, 79, Tananbaum et al 79) ascribe an increasingly important role to the contribution of discrete sources to the low-energy (few Kev) cosmic X-ray background (CXB). While the astrophysical nature of the objects involved is not yet clear, distant and powerful emitters like QSO play probably an important role (e.g. Setti and Woltjer 1979, Field 1980). For them, often the number-flux curve (LogN-LogS) provides useful hints on such properties as space distribution and/or evolution. For the case of the X-ray sources, moreover, a definite relation exists between their LogN-LogS and the granularity of the sky emission as described by the fluctuations of the X-ray background.

scholarly journals The unified Seyfert scheme and the origin of the cosmic X-ray background

1994 ◽  
Vol 270 (1) ◽  
pp. L17-L21 ◽  
Author(s):  
P. Madau ◽  
G. Ghisellini ◽  
A. C. Fabian
Keyword(s):  
X Ray ◽  
X Ray Background

scholarly journals The X-ray background and the deep X-ray surveys

2004 ◽  
Vol 34 (12) ◽  
pp. 2470-2477 ◽  
Author(s):  
R. Gilli
Keyword(s):  
X Ray ◽  
X Ray Background

scholarly journals Using the maximum X-ray flux ratio and X-ray background to predict solar flare class

Space Weather ◽  
2015 ◽  
Vol 13 (5) ◽  
pp. 286-297 ◽  
Author(s):  
L. M. Winter ◽  
K. Balasubramaniam
Keyword(s):  
Solar Flare ◽  
Flux Ratio ◽  
X Ray ◽  
X Ray Background

scholarly journals THE SPACE DENSITY OF COMPTON-THICK ACTIVE GALACTIC NUCLEUS AND THE X-RAY BACKGROUND

2009 ◽  
Vol 696 (1) ◽  
pp. 110-120 ◽  
Author(s):  
E. Treister ◽  
C. Megan Urry ◽  
Shanil Virani
Keyword(s):  
Active Galactic Nucleus ◽  
Space Density ◽  
X Ray ◽  
X Ray Background
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