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The quasar population density as a result of the formation rate and the evolutionary pathes. I. Analytical formulas and numerical simulations
Author(s) -
Boller T. H.,
Liebscher D.E.
Publication year - 1989
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113100302
Subject(s) - monomial , integrable system , quasar , statistical physics , luminosity , population , simple (philosophy) , astrophysics , physics , mathematics , mathematical physics , pure mathematics , demography , galaxy , sociology , philosophy , epistemology
The continuity equation of CAVALIERE et al. (1971) is generalized to age‐dependent luminosity evolution. We show that some simple cases (monomial forms of the formation rate) are integrable and compare some important features. Test procedures and the adaption to the observations are considered in the following parts.