Distribution of gaps in emission line redshifts of QSOs

Details Distribution of gaps in emission line redshifts of QSOs Distribution of gaps in emission line redshifts of QSOs

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..95..123b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 95, no. 1, Sept. 1983, p. 123-129.

Astronomy and Astrophysics

Astrophysics

Emission Spectra, Quasars, Red Shift, Statistical Analysis, Contingency, Histograms, Statistical Distributions

Scientific paper

Gaps in emission line redshifts of QSOs are statistically analyzed using updated data consisting of 1549 values. The results indicate that three is a critical redshift z(c) = 2.4 which separates two distinct phases in the creation of QSOs corresponding to z less than z(c) and z greater than z(c). The process of QSO creation was rather slow until about z(c), when a burst of simultaneous production took place for z between 1.9 and z(c). Although the rate of simultaneous production has decreased since then, there is a very strong tendency for QSOs to be formed in quick succession rather than at long intervals. For z less than z(c), the distribution of gaps appears to be a consequence of periodicities, while for z greater than z(c), the distribution of gaps is not the consequence of any periodicity, but is not random either and follows a definite trend.

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