Superclusters at large redshifts - Can protosuperclusters and the birth of 'pancakes' be observed?

Details Superclusters at large redshifts - Can protosuperclusters and the birth of 'pancakes' be observed? Superclusters at large redshifts - Can protosuperclusters and the birth of 'pancakes' be observed?

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..211o&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 1, Oct. 1984, p. 211-214.

Astronomy and Astrophysics

Astronomy

29

Galactic Clusters, Intergalactic Media, Lyman Alpha Radiation, Quasars, Red Shift, Absorption Spectra, Cosmology, Galactic Evolution, Local Group (Astronomy), Ultraviolet Absorption, Ultraviolet Astronomy

Scientific paper

Certain evidence indicates that galaxies are generally concentrated in large structures separated by voids of similar magnitude. The structures, or 'superclusters', have dimensions ranging from several tens to several hundreds Mpc. On the basis of an observation of the nearest superclusters, it is inferred that these entities have intricate internal structures. The substructures in the Local Supercluster have apparent widths of 3-4 Mpc. The present investigation is mainly concerned with the time of existence of the superclusters. The considerations discussed are based on the working hypothesis that superclustering of the type observed in the environment of the Galaxy has existed since at least z = 3. Attention is given to the Lyman alpha absorption lines in quasars, the evolution of quasars and the ionization of the intergalactic gas, and the expected properties of protosuperclusters.

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