A search for neutral hydrogen absorption in the double quasar 0957+561

Details A search for neutral hydrogen absorption in the double quasar 0957+561 A search for neutral hydrogen absorption in the double quasar 0957+561

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.283..175b&link_type=abstract

Nature, vol. 283, Jan. 10, 1980, p. 175, 176. NSF-supported research.

Astronomy and Astrophysics

Astronomy

1

Absorption Spectra, Hydrogen, Quasars, Radio Astronomy, Bandwidth, Line Spectra, Radio Telescopes, Red Shift

Scientific paper

The paper reports results of a search for neutral hydrogen absorption in the spectrum of 0957+561. This source consists of two quasars with similar optical spectra and Mg II absorption redshifts, and an extended region with most of the radio flux. Limits are placed on the optical depth of intervening hydrogen of 0.02 and 0.23, depending on whether such hydrogen covers all of the source or only the compact components.

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