The Soft X-Ray Background
نویسندگان
چکیده
منابع مشابه
keV SOFT X-RAY BACKGROUND
Snowden and coworkers have presented a model for the 1 4 keV soft X-ray diffuse background in which the observed flux is dominated by a ∼ 10 K thermal plasma located in a 100–300 pc diameter bubble surrounding the Sun, but has significant contributions from a very patchy Galactic halo. Halo emission provides about 11% of the total observed flux and is responsible for half of the H I anticorrela...
متن کاملConstituents of the soft X-ray background
Context. The X-ray background is generated by various classes of objects and variety of emission mechanisms. Relative contribution of individual components depends on energy. Aims. The goal is to assess the integral emission of the major components of the soft X-ray background (extragalactic discrete sources dominated by AGNs, galactic plasma, and the Warm/Hot Intergalactic Medium), investigati...
متن کاملThe Soft X-ray Background and Origins Its
The sky in the soft X-ray region of the electromagnetic spectrum (photon energies between roughly 0.1 and 10 keV) is far from dark: Over this entire energy range, the diffuse flux is much greater than the contribution from identifiable discrete sources. It now appears that there are several diffuse X-ray backgrounds, and despite the title of this review, we are not all that sure of the origin o...
متن کاملThe Intergalactic Medium and Soft X-ray Background
I present an overview of some of the recent advances in our understanding of the distribution and evolution of the ordinary, baryonic matter in the universe. Two observations that strongly suggest that most of the baryons seen at high redshift (z ≥ 2) have turned into some forms yet undetected at z = 0 are highlighted. With the aid of large-scale cosmological hydrodynamic simulations, it is sho...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1973
ISSN: 0074-1809
DOI: 10.1017/s0074180900100415