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High frequency periods in the quasar redshift distribution

โœ Scribed by Han Jin-lin; He Xiang-tao


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
614 KB
Volume
18
Category
Article
ISSN
0275-1062

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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 general formula that can constitute a periodicity, even though individual samples may favour some redshifts of smaller val

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z < 0.41 and the 1.69 < z < 2.09 interval1 which contain only 29% of the "radio" QSO's. As remarked by D. WILLS and R. L. RICKLEFS, it is thus dangerous to mix both samples for common statistical analysis. It is also important t o analyse separately the possible incidence '3f each selectional effect