Observational Evidence against Supernovae Being the Source of the Universal X-Ray Background

1972 ◽  
Vol 176 ◽  
pp. 99 ◽  
Author(s):  
John E. Mack ◽  
Donald E. Robbins
Keyword(s):  
Observational Evidence ◽  
X Ray ◽  
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

scholarly journals Wave Activity and Prominence Eruption

1998 ◽  
Vol 167 ◽  
pp. 314-317 ◽  
Author(s):  
F. Baudin ◽  
K. Bocchialini ◽  
C. Delannee ◽  
S. Koutchmy ◽  
G. Stellmacher ◽  
...  
Keyword(s):  
Dissipation Rate ◽  
Wave Activity ◽  
Observational Evidence ◽  
Loop System ◽  
Mhd Waves ◽  
Plasma Instabilities ◽  
Important Ingredient ◽  
X Ray ◽  
Convective Structures ◽  
Energy And Momentum

AbstractObservational evidence of 3 and 5 min vertical oscillations of a filament on the disk are recorded. Wave activity was observed before, during and after a filament disappearance, inside and around the filament. Both an Hα brightening and, later, a blowing out of a faint soft X-ray (Yohkoh) loop system occuring in connection with a flare were noticed. The wave activity seems to be a dynamically important ingredient of this erupting prominence.Propagating MHD waves and convective structures bring their energy and momentum from the photosphere towards the chromosphere up to the coronal heights where they are partially reflected and/or dissipated. The transition from the laminar to the turbulent state of the whole prominence enhances the dissipation rate of the external waves inside this system, adding energy to produce the heating and lifting of the plasma. Internal plasma instabilities could trigger this transition in the framework of a prominence disappearance.

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