| 书目名称 | Relativistic Flows in Astrophysics | | 编辑 | Axel W. Guthmann,Markos Georganopoulos,Alexandre M | | 视频video | | | 概述 | Bridges the gap between standard textbook material and the research level.Includes supplementary material: | | 丛书名称 | Lecture Notes in Physics | | 图书封面 |  | | 描述 | 1. 1 Schematic Picture of AGN Some galaxies are known to emit radiation with extremely high luminosities from a rather small volume in the ??ray, X-ray and UV continuum. Such active cores are the so-called Active Galactic Nuclei (AGN) and the radiation is commonly believed to be a result of gravitational energy released by matter spiraling around 9 a supermassive central black hole of about 10 M (see Fig. 1).Though the central engine which produces the enormous observed activity cannot be resolved observationally, a standard picture of an AGN has gradually emerged to explain the richness of the radiation spectra: • an accretion disk with radius from about 2 to 100 gravitational radii, R , g feeding the central black hole and emitting mainly in the UV and soft X-rays; • the broad line optically emitting clouds (BLR), which seem to be absent in 3 some sources (e. g. FRI, see hereafter) and extend up to a few 10 R from g the center. | | 出版日期 | Book 2002 | | 关键词 | active galactic nuclei; astrophysical jets; astrophysics; gamma-ray bursts; particle acceleration; relati | | 版次 | 1 | | doi | https://doi.org/10.1007/3-540-46025-X | | isbn_softcover | 978-3-642-07804-0 | | isbn_ebook | 978-3-540-46025-1Series ISSN 0075-8450 Series E-ISSN 1616-6361 | | issn_series | 0075-8450 | | copyright | Springer-Verlag Berlin Heidelberg 2002 |
The information of publication is updating
|
|
发表于 2025-3-21 17:29:02
