Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acaps...6..101b&link_type=abstract
(Acta Astrophysica Sinica, vol. 6, 1986, p. 101-110) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 10, Sept. 1986, p
Astronomy and Astrophysics
Astrophysics
1
Absorption Spectra, Emission Spectra, Lyman Alpha Radiation, Quasars, Red Shift, Spectral Correlation, Line Shape, Magnitude, Statistical Analysis
Scientific paper
A statistical study is presented which shows that the density of absorption lines in the Lyman-alpha forest seen in the spectra of high-redshift quasars is clearly dependent on the emission redshift z(em) of the quasar itself. It is shown for the first time and at a rather high confidence level that, at the same values of the absorption redshift, quasars with larger z(em) have greater numbers of Lyman-alpha absorption lines. This result, if confirmed, will pose a serious difficulty for the current 'intervening hypothesis' of the Lyman-alpha forest. A two-factor variance analysis with ejection velocity as the second factor also casts doubt on the 'ejecting hypothesis'.
Bian Yu-Lin
Chen Jian-Sheng
Zou Zhen-Long
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