{"product_id":"relativistic-flows-in-astrophysics-2002","title":"Relativistic Flows in Astrophysics","description":"\u003cp\u003e\"Relativistic Flows in Astrophysics\" by A.W. Guthmann, M. Georganopoulos, A. Marcowith, K. Manolakou is a astronomy book and space science reference focused on Deep Sky \u0026amp; Solar System. Best for students, researchers, and serious astronomy enthusiasts.\u003c\/p\u003e\n\u003cp\u003e1. 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.\u003c\/p\u003e","brand":"Springer Science \u0026 Business Media","offers":[{"title":"Default Title","offer_id":46419651854535,"sku":"1-99-523-002368","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/9783540435181.jpg?v=1776323136","url":"https:\/\/snowflakeskies.com\/products\/relativistic-flows-in-astrophysics-2002","provider":"Snowflake Skies","version":"1.0","type":"link"}