Radio jets and high velocity gas in the Seyfert Galaxy NGC 1068

Details Radio jets and high velocity gas in the Seyfert Galaxy NGC 1068 Radio jets and high velocity gas in the Seyfert Galaxy NGC 1068

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275....8w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 1, 1983, p. 8-14.

Astronomy and Astrophysics

Astronomy

155

Galactic Nuclei, Gas Dynamics, Radio Galaxies, Radio Jets (Astronomy), Seyfert Galaxies, Astronomical Maps, Astronomical Models, Astronomical Spectroscopy, Cosmic Gases, Flow Velocity, Jet Flow, Linear Polarization, Radiant Flux Density

Scientific paper

New, high sensitivity VLA maps of the central regions of NGC 1068 at 4.9 GHz (total intensity and linear polarization) and 15.0 GHz (total intensity only) are presented. As found by van der Hulst, Hummel, and Dickey (1982), the bright radio emission coincident with the galaxy nucleus is resolved into a bent triple of total extent 0.7 arcsec, with the central source apparently associated with the nucleus proper. It is found that the 13 arcsec scale linear source comprises oppositely directed radio jets feeding a 'hot spot' and radio lobes. The radio emission of the NE lobe seems to be concentrated near the surface of a conically shaped region, which is also closely associated with some of the high velocity, optical line emitting clouds, and may relate to a bow shock, blast wave, or cocoon of material shed by the jet as it propagates through the interstellar medium. Two models for the ionization of the optical clouds are discussed either ionizing photons eacape preferentially along the rotation axis of the disk which collimates the radio jets, or the excitation is effected by the kinetic energy of the jets or lobes themselves.

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