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The X-ray background and AGNs

✍ Scribed by G. Hasinger


Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
715 KB
Volume
132
Category
Article
ISSN
0920-5632

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Spectroscopic X-ray classification of AG
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Seyfert galaxies were classified on the basis of their optical spectroscopic properties into types 1 and 2, (Weedman 1970, Weedman 1973 and Khachikian & Weedman 1974). This enduring classification highlighted an important physical distinction and ultimately led to Unified Schemes for AGN, which have