The soft X-ray diffuse 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 کاملOn the X-ray haloes of the Galaxy and the Local Group and the diffuse soft X-ray background
We have extended the spectral modelling of the soft X-ray background (SXRB) using the ROSAT PSPC data along several lines of galactic longitude. Our results continue to demonstrate the need for a Galactic halo component, which is shown to vary markedly as a function of position. These fluctuations significantly affect the ability to investigate variations in the extragalactic SXRB below 2 keV. ...
متن کاملOn the Contribution of Unresolved Galactic Stars to the Diffuse Soft X-ray Background
Using stellar luminosity functions derived from ROSAT data, the contributions of Galactic stars to the diffuse X-ray background are calculated for ROSAT PSPC energy bands. The model follows that of Guillout et al. (1996), but uses ROSAT rather than Einstein data to determine the intrinsic luminosity distributions. The model adequately predicts the numbers of stellar sources observed in deep ROS...
متن کاملA High Spectral Resolution Observation of the Soft X-ray Diffuse Background with Thermal Detectors
A high spectral resolution observation of the diffuse X-ray background in the 60–1000 eV energy range has beenmade using an array of 36 1 mm2microcalorimeters flown on a sounding rocket. Detector energy resolution ranged from 5 to 12 eV FWHM, and a composite spectrum of 1 sr of the background centered at l 1⁄4 90 , b 1⁄4 þ60 was obtained with a net resolution of 9 eV. The target area includes b...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1983
ISSN: 0004-637X,1538-4357
DOI: 10.1086/161024