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arXiv · astro-ph/0210681

Galactic X-ray Survey

K. Ebisawa·S. Yamauchi·A. Bamba·M. Ueno·S. Senda
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Abstract

We review highlights of the results obtained from recent Galactic X-ray survey observations, in particular ASCA Galactic center and plane survey and our Chandra deep survey on the (l,b)=(28.5,0) region. Strong hard X-ray diffuse components are observed from Galactic ridge, center and bulge, and they have both thermal and non-thermal spectral components. Dozens of discrete and extended sources have been discovered on the Galactic plane, which also indicate thermal and/or non-thermal X-ray energy spectra. They are often associated with radio sources and are considered to be SNR candidates. Most of the hard X-ray point sources in the outer part of the Galactic plane are considered to be background AGNs, while fraction of the Galactic hard X-ray sources (such as quiescent dwarf novae) increases toward the Galactic center. Most of the soft X-ray sources on the Galactic plane are presumably nearby active stars.

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K. Ebisawa, S. Yamauchi, A. Bamba, M. Ueno, S. Senda. 2002-10-31. Galactic X-ray Survey. https://doi.org/10.1002/asna.200310014

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