Radio structure of the central region of Hydra A at 22 GHz

Details Radio structure of the central region of Hydra A at 22 GHz Radio structure of the central region of Hydra A at 22 GHz

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42l..19t&link_type=abstract

Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 2, 1990, p. L19-L25.

Astronomy and Astrophysics

Astronomy

1

Galactic Nuclei, Galactic Structure, Radio Galaxies, Galactic Radio Waves, Magnetic Fields, Radio Astronomy

Scientific paper

A high-resolution observation of the central region of radio galaxy Hydra A has been made at 22 GHz with the Nobeyama Millimeter Array. This source shows a rotationally symmetric structure (S-shaped) with a size of 70 kpc. The source has a weak unresolved component with a flat spectrum, coinciding with a brighter component of an apparently double optical nucleus. The S-shaped structure could be caused by a precession of the nucleus or by an interaction with a denser medium. The large rotation measure and the strong depolarization may be caused by cooling flows accreting onto Hydra A.

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