Suzaku Studies of White Dwarf Stars and the Galactic X-ray Background Emission (Hardcover, 2013 ed.)

This thesis presents a study of the origin of an apparently extended X-ray emission associated with the Galactic ridge. The study was carried out with broadband spectra obtained from mapping observations in the Galactic bulge region conducted in 2005-2010 by the Suzaku space X-ray observatory. The spectra were analyzed with a newly constructed X-ray spectral model of an accreting white dwarf binary that is one of the proposed candidate stars for the origin of the Galactic ridge emission in the higher energy band. Fitting of the observed Galactic ridge spectra with the model showed that there is another spectral component that fills the gap between the observed X-ray flux and the component expected from the accreting white dwarf spectral model in the lower energy band. This additional soft spectral component was nicely explained by an X-ray spectral model of normal stars. The result, together with previously reported high-resolution imaging results, strongly supports the idea that the Galactic ridge X-ray emission is an assembly of dim, discrete X-ray point sources.

General

Imprint:	Springer Verlag,Japan
Country of origin:	Japan
Series:	Springer Theses
Release date:	2013
First published:	2013
Authors:	Takayuki Yuasa
Dimensions:	235 x 155 x 15mm (L x W x T)
Format:	Hardcover
Pages:	154
Edition:	2013 ed.
ISBN-13:	978-4-431-54218-6
Categories:	Books > Science & Mathematics > Science: general issues > Scientific standards Books > Science & Mathematics > Astronomy, space & time > Galaxies, clusters, intergalactic matter > General
LSN:	4-431-54218-3
Barcode:	9784431542186

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