000			04213nam a2200361Ki 4500
001			ocn862077465
003			OCoLC
005			20240726105335.0
008			131104s2013 enk ob 001 0 eng d
040			_aNT _beng _erda _epn _cNT
020			_a9781107314306 _q((electronic)l(electronic)ctronic)l((electronic)l(electronic)ctronic)ctronic bk.
050	0	4	_aQB858 _b.P497 2013
049			_aNTA
100	1		_aNetzer, Hagai. _e1
245	1	0	_aThe physics and evolution of active galactic nuclei /Hagai Netzer, Tel Aviv University.
260			_aCambridge : _bCambridge University Press, _c(c)2013.
300			_a1 online resource (xiv, 353 pages)
336			_atext _btxt _2rdacontent
337			_acomputer _bc _2rdamedia
338			_aonline resource _bcr _2rdacarrier
347			_adata file _2rda
520	0		_a"Research into active galactic nuclei (AGN) - the compact, luminous hearts of many galaxies - is at the forefront of modern astrophysics. Understanding these objects requires extensive knowledge in many different areas: accretion disks, the physics of dust and ionized gas, astronomical spectroscopy, star formation, and the cosmological evolution of galaxies and black holes. This new text by Hagai Netzer, a renowned astronomer and leader in the field, provides a comprehensive introduction to the theory underpinning our study of AGN and the ways that we observe them. It emphasizes the basic physics underlying AGN, the different types of active galaxies and their various components, and the complex interplay between them and other astronomical objects. Recent developments regarding the evolutionary connections between active galaxies and star-forming galaxies are explained in detail. Both graduate students and researchers will benefit from Netzer's authoritative contributions to this exciting field of research"-- _cProvided by publisher.
520	0		_a"Observations of active galactic nuclei The names "active galaxies" and "active galactic nuclei" (AGN) are related to the main feature that distinguishes these objects from inactive (normal or regular) galaxies: the presence of supermassive accreting black holes (BHs) in their centers. As of 2011, there were approximately a million known sources of this type selected by their color and several hundred thousand by basic spectroscopy and accurate redshifts. It is estimated that in the local universe, at z <0.1, about 1 out of 50 galaxies contains a fast-accreting supermassive BH, and about 1 in 3 contains a slowly accreting supermassive BH. Detailed studies of large samples of AGN, and the understanding of their connection with inactive galaxies and their redshift evolution, started in the late 1970s, long after the discovery of the first quasi-stellar objects (hereinafter quasars or QSOs) in the early 1960s. Although all objects containing active supermassive BHs are now referred to as AGN, various other names, relics from the 1960s, 1970s, and even later, are still being used. Some of the names that appear occasionally in the literature, such as "Seyfert 1 galaxies" and "Seyfert 2 galaxies," in honor of Seyfert, who observed the first few galaxies of this type in the late 1940s (see Chapter 6 for a detailed discussion of the various groups), are the result of an early confusion between different sources that are now known to have similar properties"-- _cProvided by publisher.
504			_a2
505	0	0	_aMachine generated contents note: Preface; 1. Observations of active galactic nuclei; 2. Nonthermal radiation processes; 3. Black holes; 4. Accretion disks; 5. Physical processes in AGN gas and dust; 6. The AGN family; 7. Main components of AGN; 8. Host galaxies of AGNs; 9. Formation and evolution of AGNs; 10. Outstanding questions; References; Index.
530			_a2 _ub
650		0	_aActive galactic nuclei.
655		1	_aElectronic Books.
856	4	0	_uhttps://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=527870&site=eds-live&custid=s3260518 _zClick to access digital title | log in using your CIU ID number and my.ciu.edu password
942			_cOB _D _eEB _hQB. _m2013 _QOL _R _x _8NFIC _2LOC
994			_a02 _bNT
999			_c97110 _d97110
902			_a1 _bCynthia Snell _c1 _dCynthia Snell