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

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

byHirofumi Noda

Hardcover | December 15, 2015

Pricing and Purchase Info

$165.95

Earn 830 plum® points

Prices and offers may vary in store

Quantity:

In stock online

Ships free on orders over $25

Not available in stores

about

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.

Dr. Hirofumi NodaDepartment of Astronomy, The University of Tokyo
Loading
Title:X-ray Studies of the Central Engine in Active Galactic Nuclei with SuzakuFormat:HardcoverDimensions:153 pages, 23.5 × 15.5 × 0.25 inPublished:December 15, 2015Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9812877207

ISBN - 13:9789812877208

Look for similar items by category:

Reviews

Table of Contents

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