The evolution of a quasar population based on a simple source model

Details The evolution of a quasar population based on a simple source model The evolution of a quasar population based on a simple source model

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.152...57z&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 152, no. 1, Feb. 1989, p. 57-70.

Astronomy and Astrophysics

Astrophysics

Quasars, Stellar Evolution, Stellar Models, Continuity Equation, Independent Variables, Problem Solving

Scientific paper

A source model that assumes that the star collisions in the central stellar system are the principal mechanisms supplying the gas accreting onto a black hole is used to study the cosmological evolution of a population of quasars and AGN. The continuity equation for the assumed population has been solved both for the zero birth function and for its special type. Results have been obtained as a function of the distribution of the stellar core radii and of the number of stars in the system. The present method allows the whole evolutionary track of source populations to be described and the evolution to be related to features of a single source.

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