Astronomy and Astrophysics – Astronomy
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208..323l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, May 15, 1984, p. 323-345. Research supported by th
Astronomy and Astrophysics
Astronomy
36
Astronomical Models, Dynamic Models, Extragalactic Radio Sources, Galactic Evolution, Astronomical Maps, Density Distribution, Faraday Effect, Galactic Structure, High Resolution
Scientific paper
High-resolution multi-frequency polarization observations of the wide-angle-tail radio source 3C 465 in Abell 2634 are employed to study dynamical models of the source evolution. Small-scale fluctuations in the Faraday rotation that imply thermal matter in the source with a density in the extended components of approximately 500/cu m are demonstrated, and the radio morphology indicate that a D galaxy, NGC 7720, can move through the core of its cluster at a velocity of several hundred km/s. A model is proposed where most of the extended structure remains static in the intracluster medium after being deposited by jets. A minimum velocity of 3000 km/s for the jet (with relaxed assumptions) is derived along with an approximate age 2 x 10 to the 8th years and a mass flow rate less than 3 solar masses/year. A possible explanation for the correlation noted by Birkinshaw et al. (1978) between the source power and the distance separating the nucleus and the first rapid increase in brightness is given.
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