X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku
Langue : anglais
Edité par Springer, 2018
- Livre broché
- Neuf

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X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku | Hirofumi Noda | Taschenbuch | Springer Theses | xv | Englisch | 2018 | Springer | EAN 9789811357084 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.
N° de réf. du vendeur 115114264
- Titre
- X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku
- Auteur
- Hirofumi Noda
- Éditeur
- Springer
- Année de publication
- 2018
- État de l'article
- Neu
- Reliure
- Taschenbuch
- Langue
- anglais
- ISBN à 10 chiffres
- 9811357080
- ISBN à 13 chiffres
- 9789811357084
- Poids de l'article
- 303 grammes
- Dimensions
- 235 x 155 x 10 mm
- Série
- Livre 74 sur 797: Springer Theses
- Catalogues du vendeur
- Bücher
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.« Synopsis » peut appartenir à une autre édition de cet ouvrage.
À propos de l’auteur
Dr. Hirofumi Noda
Department of Astronomy, The University of Tokyo
« A propos de ce titre » peut appartenir à une autre édition de cet ouvrage.
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