Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..778g&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 105, no. 3, p. 778-787.
Astronomy and Astrophysics
Astrophysics
92
Cooling Flows (Astrophysics), Faraday Effect, Galactic Clusters, Radio Astronomy, Radio Galaxies, X Ray Astronomy, Data Reduction, Interstellar Magnetic Fields, Magnetoionics, Very Large Array (Vla), X Ray Imagery
Scientific paper
We present new, multiwavelength VLA observations of the radio galaxy 1346 + 268 in the center of cooling flow cluster Abell 1795. With the high resolution (0.6 arcsec) observations, the radio source is generally 10 percent to 30 percent polarized. We find large Faraday rotation measures, exceeding 3000 rad/sq m in places. Using the X-ray images of Abell 1795 from the Einstein database, we have modeled the distribution of the hot, X-ray emitting gas. The large rotation measures could be induced by the magneto-ionized intracluster medium. The field must be typically above 20/micro-G near the cluster center. If the field is not ordered, it may have a similar energy density as the thermal energy density in the X-ray emitting gas.
Ge Jing P.
Owen Frazer N.
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