Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...264l..17l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 264, no. 2, p. L17-L20.
Astronomy and Astrophysics
Astrophysics
2
Absorption Spectra, Cosmology, Quasars, Red Shift, Galaxies, Spatial Distribution, Statistical Analysis
Scientific paper
By means of a statistical test, based on the distribution of the free paths of the light rays which come from QSOs and are intercepted by intervening objects, we find that (1) the absorbers which cause the absorption redshifts of QSOs are not distributed randomly but are clustered, and (2) there exists a characteristic radius Rc of about 10/h Mpc (q0 = 0.5, H0 = 100 h km/s Mpc), the clusters of absorbers picked up with a neighborhood radius of about Rc correspond to the huge intervening objects of a kind which are distributed at random in space. The mean number density of these huge objects is about 2 x 10 exp -6(1 + z)-cubed h-cubed/cu Mpc. An estimate of the mass, about 10 exp 17/h solar masses, suggests that these huge objects might correspond to the Great Attractors.
Liu Yin
Liu Yong-Zhen
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