The giant luminous arc in the centre of the A 370 cluster of galaxies

Details The giant luminous arc in the centre of the A 370 cluster of galaxies The giant luminous arc in the centre of the A 370 cluster of galaxies

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987msngr..48...43s&link_type=abstract

ESO Messenger (ISSN 0722-6691), June 1987, v. 48, p. 43,44.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Brightness Distribution, Galactic Clusters, Luminosity, Star Formation, Arcs, Gravitational Lenses, Interstellar Matter

Scientific paper

The spectrum of the eastern end of the arc in A 370 was obtained, and after data reduction, it was maintained that the light probably comes from a galaxy at a redshift of 0.59. It is believed that an exceptional configuration of gravitational lensing was observed, with the whole cluster as the deflector and a galaxy at z = 0.59 as the source. If the system/source deflector is perfectly aligned, the theory predicts the formation of a circular ring; if the source lies at 1 arcsec from the cluster center, the formation of two symmetric arcs can be predicted.

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