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 Prescription for Social Dilemmas by Takayuki Yuasa
Cover of the book Biomechanics in Orthopedics by Takayuki Yuasa
Cover of the book The Liver in Systemic Diseases by Takayuki Yuasa
Cover of the book Bone Marrow Transplantation by Takayuki Yuasa
Cover of the book Defects and Impurities in Silicon Materials by Takayuki Yuasa
Cover of the book Communities and Livelihood Strategies in Developing Countries by Takayuki Yuasa
Cover of the book Finite Element Methods in Incompressible, Adiabatic, and Compressible Flows by Takayuki Yuasa
Cover of the book Relativistic Dissipative Hydrodynamic Description of the Quark-Gluon Plasma by Takayuki Yuasa
Cover of the book Introduction to Astrochemistry by Takayuki Yuasa
Cover of the book Advanced Structural Wind Engineering by Takayuki Yuasa
Cover of the book Human-Harmonized Information Technology, Volume 1 by Takayuki Yuasa
Cover of the book Keynesian Economics and Price Theory by Takayuki Yuasa
Cover of the book Mathematical Challenges in a New Phase of Materials Science by Takayuki Yuasa
Cover of the book Therapeutic Strategies for Heart Failure by Takayuki Yuasa
Cover of the book Learning Regression Analysis by Simulation 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