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Published April 2, 1982 | public
Journal Article

Quasar Boundary

Abstract

The observed absence of quasar redshifts larger than 3.53 is erroneously attributed to Richard Green and myself in "A boundary for the quasars" (Research News, 22 Jan., p. 388). Our survey of bright quasars does not cover redshifts larger than 2.2 because in choosing candidates we rely on the ultraviolet excess, which tends to disappear at larger redshifts.

Additional Information

© 1982 American Association for the Advancement of Science.

Additional details

Created:
August 19, 2023
Modified:
October 20, 2023