Upper limits to the rotation measure and magnetism of the Great Attractor supercluster

Details Upper limits to the rotation measure and magnetism of the Great Attractor supercluster Upper limits to the rotation measure and magnetism of the Great Attractor supercluster

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.152....9v&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 152, no. 1, Feb. 1989, p. 9-13.

Astronomy and Astrophysics

Astrophysics

5

Galactic Clusters, Galactic Rotation, Interstellar Magnetic Fields, Angular Velocity, Faraday Effect, Statistical Analysis

Scientific paper

A substantial concentration of galaxies toward l(II) = 320 deg, b(II) = + 7 deg, with a mean radial velocity of 4000 km/s, has earlier been nicknamed the 'Great Attractor' - it is a nearby supercluster of galaxies. Here, an attempt is made to detect an excess Faraday rotation measure that could be attributed to the magnetic field and thermal gas in the space between the galaxies inside the Great Attractor supercluster. Only an upper limit to the rotation measure, of at most 8 rad/sq m, could be placed on the Great Attractor supercluster, implying in turn an upper limit on the supercluster magnetic field of at most 0.1 microgauss (ordered component only).

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