Faraday rotation in cooling flow clusters of galaxies. 2: Survey

Details Faraday rotation in cooling flow clusters of galaxies. 2: Survey Faraday rotation in cooling flow clusters of galaxies. 2: Survey

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.1523g&link_type=abstract

The Astronomical Journal (ISSN 0004-6256), vol. 108, no. 5, p. 1523-1533

Astronomy and Astrophysics

Astrophysics

49

Astronomical Polarimetry, Cooling Flows (Astrophysics), Faraday Effect, Radio Astronomy, Radio Galaxies, Astronomical Maps, Cosmic X Rays, Interplanetary Magnetic Fields, Interstellar Gas, Polarimeters, Very Large Array (Vla)

Scientific paper

We have performed sensitive polarimetric radio observations with the Very Large Array (VLA) of radio galaxies embedded in extreme cooling flow clusters. High sensitivity, multifrequency maps, and maps of Faraday Rotation Measures (RMs) of 1514+0712, 1626+396, and 1603+178 are presented. 1514+0712 and 1626+396 are found to have absolute RMs in excess of 800 rad/sq m. For 1603+178, the absolute RMs are less than 100 rad/sq m, unlike 1512+0712 and 1626+396 the radio galaxy is not in the center of the cooling flow. The high RMs are likely to be produced by magnetic fields associated with the dense, hot x-ray emitting gas in the cooling flow clusters.

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