The X-Ray Luminosity--Redshift Relationship of Quasars

Details The X-Ray Luminosity--Redshift Relationship of Quasars The X-Ray Luminosity--Redshift Relationship of Quasars

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pnas...77.3080s&link_type=abstract

Proceedings of the National Academy of Sciences of the United States of America, Volume 77, Issue 6, pp. 3080-3084

Mathematics

Logic

3

Scientific paper

Chronometric cosmology provides an excellent fit for the phenomenological x-ray luminosity--redshift relationship for 49 quasars observed by the Einstein satellite. Analysis of the data on the basis of the Friedmann cosmology leads to a correlation of absolute x-ray luminosity with redshift of >0.8, which is increased to ~ 1 in the bright envelope. Although the trend might be ascribed a priori to an observational magnitude bias, it persists after nonparametric, maximum-likelihood removal of this bias.

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