High resolution observations of the narrow angle tail radio galaxy in Abell 115

Details High resolution observations of the narrow angle tail radio galaxy in Abell 115 High resolution observations of the narrow angle tail radio galaxy in Abell 115

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...225..333g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 225, no. 2, Nov. 1989, p. 333-340.

Astronomy and Astrophysics

Astronomy

9

Galactic Clusters, High Resolution, Radio Astronomy, Radio Galaxies, Brightness Distribution, Emission Spectra, Radio Jets (Astronomy), Very Large Array (Vla), X Rays

Scientific paper

Multifrequency VLA observations of the NAT radio galaxy 0053 + 26 B in Abell 115 are presented. The characteristics of the radio source are: a core coincident with the galaxy, an asymmetric jet with a bending at 6 kpc in the northern side, two tails of diffuse emission, and a low brightness feature which bends at 60 kpc in the direction opposite to the X-ray emission, that is centered on the dominant galaxy of northern cluster subcondensation. The radio morphology of 0053 +26 B suggests that the jets are only slightly deflected by the interstellar medium and that a conspicuous bending takes place only when they enter the intergalactic medium. The comparison between the internal energy density of radio emitting particles and the external pressure computed from the X-ray distribution shows that the low brightness regions are thermally confined. Due to the high velocity of the parent galaxy, ram pressure effects may explain the tail morphology, while buoyancy effects may produce the North East bending of the tail.

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