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Periodicity in quasar redshifts or selection effects?
Author(s) -
Basu D.
Publication year - 1999
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 - 10.1002/1521-3994(199905)320:2<53::aid-asna53>3.0.co;2-k
Subject(s) - quasar , redshift , physics , astrophysics , selection (genetic algorithm) , red shift , astronomy , galaxy , computer science , artificial intelligence
Peaks at high redshifts in individual samples of quasars can be explained as due to selection effects. It is concluded that peaks in quasar redshift distribution do not obey any generalformula that can constitute a periodicity, even though individual samples may favour some redshifts of smaller values, viz. z < 1.