Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...222....1c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. 1-4.
Astronomy and Astrophysics
Astrophysics
20
Absorption Spectra, Line Spectra, Lyman Alpha Radiation, Quasars, Red Shift, Power Spectra, Spectrum Analysis, Statistical Analysis
Scientific paper
Data from a reasonably homogeneous sample of Ly-alpha absorption lines in the spectra of 11 quasars have been analyzed in a search for periodicity and other large scale inhomogeneity in the distribution of redshifts. A new method called modified power spectrum analysis is described. The statistical results show that not only a periodic component exists at a significant level of 96 percent, but also that the length of periods, corresponding to about 0.2 for the argument x = 1n(1 + z), is just the same as for the periodicity of emission line redshifts of quasars. Moreover, the ratio R = 1 + Z(em)/1 + Z(Ab) for Ly-alpha absorption lines also shows several peaks in its distribution which is in good agreement with the prediction if the periodicity exists in both emission line and absorption line redshifts.
Chu Yao-Quan
Xingfen Zhu
No associations
LandOfFree
The periodicity in the redshift distribution of the Lyman-alpha forest does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The periodicity in the redshift distribution of the Lyman-alpha forest, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The periodicity in the redshift distribution of the Lyman-alpha forest will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-760208