Suzaku Studies of White Dwarf Stars and the Galactic X-ray Background Emission

Nonfiction, Science & Nature, Science, Other Sciences, Weights & Measures, Physics, Astronomy
Cover of the book Suzaku Studies of White Dwarf Stars and the Galactic X-ray Background Emission by Takayuki Yuasa, Springer Japan
View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart
Author: Takayuki Yuasa ISBN: 9784431542193
Publisher: Springer Japan Publication: January 16, 2013
Imprint: Springer Language: English
Author: Takayuki Yuasa
ISBN: 9784431542193
Publisher: Springer Japan
Publication: January 16, 2013
Imprint: Springer
Language: English

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.

View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart

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.

More books from Springer Japan

Cover of the book The Political Economy of Asian Regionalism by Takayuki Yuasa
Cover of the book Tensegrity Structures by Takayuki Yuasa
Cover of the book Preliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthquake by Takayuki Yuasa
Cover of the book Perinatal Thrombosis and Hemostasis by Takayuki Yuasa
Cover of the book Sudden Infant Death Syndrome by Takayuki Yuasa
Cover of the book Measurements of Spin-Orbit Angles for Transiting Systems by Takayuki Yuasa
Cover of the book The Economics of Self-Destructive Choices by Takayuki Yuasa
Cover of the book Neurally Based Measurement and Evaluation of Environmental Noise by Takayuki Yuasa
Cover of the book Neurodegenerative Disorders as Systemic Diseases by Takayuki Yuasa
Cover of the book Firms’ Location Selections and Regional Policy in the Global Economy by Takayuki Yuasa
Cover of the book Challenges for Human Security Engineering by Takayuki Yuasa
Cover of the book Drebrin by Takayuki Yuasa
Cover of the book Highly Luminescent Lanthanide Complexes with Specific Coordination Structures by Takayuki Yuasa
Cover of the book Theoretical Aspects of Spatial-Temporal Modeling by Takayuki Yuasa
Cover of the book Lens Epithelium and Posterior Capsular Opacification by Takayuki Yuasa
We use our own "cookies" and third party cookies to improve services and to see statistical information. By using this website, you agree to our Privacy Policy