Gravitational imaging by superclusters

Details Gravitational imaging by superclusters Gravitational imaging by superclusters

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278l..91s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 278, March 15, 1984, p. L91-L94.

Physics

Optics

8

Galactic Clusters, Gravitational Lenses, Matter (Physics), Dark Matter, Geometrical Optics, Red Shift, Space Density

Scientific paper

Most of the visible matter in the universe seems to be concentrated in superclusters, which are long (10-100 Mpc), thin filaments separated by voids of comparable extent. If the total linear density in such structures were on the order of 10 to the 15th solar masses/Mpc, and the perpendicular scale height were less than 1 Mpc, then superclusters could produce significant gravitational lens effects (amplification and multiple imaging) on background sources with z values greater than 0.5. This would require that superclusters consist substantially of dark matter not associated with individual galaxies or clusters of galaxies. Several possible examples of imaging by superclusters are cited.

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