Mohlo by sa vám tiež páčiť

Viac informácií o knihe X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku

• Parametre knihy
• Anotácia kniha
• Obľúbené z iného súdka

Nákupom získate 301 bodov

Anotácia knihy

This book describes how the X-ray satellite Suzaku can be used to establish a picture of a central engine, which 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 spectroscopy and broad energy band coverage.§

Parametre knihy

Zaradenie knihy Knihy po anglicky Mathematics & science Science: general issues Scientific standards

• Celý názov: X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku
• Autor: Hirofumi Noda
• Jazyk: Angličtina
• Väzba: Pevná
• Počet strán: 153
• EAN: 9789812877208
• ISBN: 9812877207
• ID: 09390018
• Nakladateľ: Springer Verlag, Singapore
• Hmotnosť: 482 g
• Rozmery: 235 × 155 × 13 mm
• Dátum vydania: 08. December 2015

Obľúbené z iného súdka

---

---

---