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X-ray studies of the central engine in active galactic nuclei with Suzaku[electronic resource] /

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
杜威分類號:	523.112
書名/作者:	X-ray studies of the central engine in active galactic nuclei with Suzaku/ by Hirofumi Noda.
作者:	Noda, Hirofumi.
出版者:	Singapore : : Springer Singapore :, 2016.
面頁冊數:	xv, 153 p. : : ill., digital ;; 24 cm.
Contained By:	Springer eBooks
標題:	Active galactic nuclei.
標題:	Active galaxies.
標題:	Space astronomy.
標題:	Physics.
標題:	Astronomy, Observations and Techniques.
標題:	Measurement Science and Instrumentation.
ISBN:	9789812877215
ISBN:	9789812877208
內容註:	Review -- Instrumentation -- Observation and Data Reduction -- Soft X-ray Analysis -- Hard X-ray Analysis -- Discussion and Conclusion.
摘要、提要註:	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.
電子資源:	http://dx.doi.org/10.1007/978-981-287-721-5

X-ray studies of the central engine in active galactic nuclei with Suzaku[electronic resource] /
Noda, Hirofumi.

X-ray studies of the central engine in active galactic nuclei with Suzaku[electronic resource] /by Hirofumi Noda. - Singapore :Springer Singapore :2016. - xv, 153 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

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:

624887
Active galactic nuclei.

LC Class. No.: QB858.3

Dewey Class. No.: 523.112

X-ray studies of the central engine in active galactic nuclei with Suzaku[electronic resource] /
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