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X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku/ by Hirofumi Noda.
作者:	Noda, Hirofumi.
面頁冊數:	XV, 153 p. 95 illus., 33 illus. in color.online resource. :
Contained By:	Springer Nature eBook
標題:	Observations, Astronomical. -
電子資源:	https://doi.org/10.1007/978-981-287-721-5
ISBN:	9789812877215

X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku
Noda, Hirofumi.

X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku[electronic resource] /by Hirofumi Noda. - 1st ed. 2016. - XV, 153 p. 95 illus., 33 illus. in color.online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053. - Springer Theses, Recognizing Outstanding Ph.D. Research,.

Review -- Instrumentation -- Observation and Data Reduction -- Soft X-ray Analysis -- Hard X-ray Analysis -- Discussion and Conclusion.

The aim of this research was to use the X-ray satellite Suzaku to establish a picture of a central engine that effectively converts the gravitational energy of accreting matter onto the supermassive black hole to a huge amount of radiation in an active galactic nucleus. Although the engine is known to consist of a Comptonizing corona and an accretion disk, its image has remained unclear because primary emissions, coming directly from the engine, cannot be identified in X-ray spectra without models. The book describes a technique of time variability assisted spectral decomposition to model-independently examine X-ray signals, and how this was applied to the Suzaku archive data of active galactic nuclei. As a result, at least three distinct primary X-ray components have been discovered in an X-ray from an active galactic nucleus, presumably indicating a novel picture that the engine is composed of multiple coronae with different physical properties in an accretion flow. Furthermore, the determination of the spectral shapes of the primary X-rays has a significant impact on estimations of black hole spins, because it is essential to quantify reprocessed X-ray spectra. The successful model-independent decomposition of X-ray spectral components with flux variations of active galactic nuclei is likely to be effective in future data analyses from the soon-to-be-launched Japanese X-ray satellite ASTRO-H, which is capable of achieving unprecedented fine spectros copy and broad energy band coverage.

ISBN: 9789812877215

Standard No.: 10.1007/978-981-287-721-5doiSubjects--Topical Terms:

1254353
Observations, Astronomical.

LC Class. No.: QB4

Dewey Class. No.: 520

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