{"product_id":"9789812877208","title":"Springer Theses","description":"\u003ch1\u003eSpringer Theses\u003c\/h1\u003e \u003ch2\u003eNoda, Hirofumi\u003c\/h2\u003e \u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe aim of this research was to use the X-ray satellite \u003ci\u003eSuzaku\u003c\/i\u003e 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 \u003ci\u003eSuzaku\u003c\/i\u003e 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 \u003ci\u003eASTRO-H\u003c\/i\u003e, which is capable of achieving unprecedented fine spectros\u003c\/p\u003ecopy and broad energy band coverage. \u003ch3\u003eDetails\u003c\/h3\u003e \u003cp\u003ePublished by: Springer\u003c\/p\u003e \u003cp\u003ePublication Date: 2015-12-15\u003c\/p\u003e \u003cp\u003eFormat: Hardcover\u003c\/p\u003e \u003cp\u003eISBN-13: 9789812877208\u003c\/p\u003e \u003cp\u003eDOI: 10.1007\/978-981-287-721-5\u003c\/p\u003e \u003cp\u003eDimensions: 235cm x155cm\u003c\/p\u003e \u003cp\u003ePages: 153\u003c\/p\u003e ","brand":"Springer Nature Singapore","offers":[{"title":"Default Title","offer_id":47668104495244,"sku":"9789812877208","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/9545\/1788\/files\/9789812877208.jpg?v=1776462071","url":"https:\/\/fh90cf-fv.myshopify.com\/products\/9789812877208","provider":"Late Knight Books and Services, LLC","version":"1.0","type":"link"}