Primeval QSOs

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164798· OSTI ID:6399420

Cavaliere, A; Szalay, A S

The physical processes causing the formation of an increased number of QSOs at redshifts higher than 2 are discussed, along with the implications for the turn-on of active galactic nuclei (AGN) at the same time as QSOs. It is argued that optical and X-ray background data indicate that all but the brightest objects will decline in number at redshifts exceeding 2. Consideration is given to the possibility that accreting black holes are at the center of AGNs and formed within a few billion years of the turn-on of QSOs. A scenario is also explored wherein QSOs are remnant echoes of the epoch of galaxy formation and are thereby a suitable object with which to probe the parent population. 39 references.

• Research Organization: Roma II Universita, Italy; NASA/Fermilab Astrophysics Group, Batavia, IL; Eotvos Lorand Tudomanyegyetem, Budapest, Hungary
• OSTI ID: 6399420
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 311; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BLACK HOLES
COSMIC RADIO SOURCES
GALACTIC EVOLUTION
GALAXY NUCLEI
LUMINOSITY
MATHEMATICAL MODELS
OPTICAL PROPERTIES
ORIGIN
PHYSICAL PROPERTIES
QUASARS
RED SHIFT
STAR ACCRETION
STAR EVOLUTION
UNIVERSE