Collimated radio and optical emission associated with the Seyfert galaxy Markarian 78

Details Collimated radio and optical emission associated with the Seyfert galaxy Markarian 78 Collimated radio and optical emission associated with the Seyfert galaxy Markarian 78

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238..863p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 15, 1989, p. 863-879.

Astronomy and Astrophysics

Astronomy

61

Collimation, Light Emission, Markarian Galaxies, Radio Emission, Seyfert Galaxies, Galactic Nuclei, Ionized Gases, Relativistic Plasmas, Velocity Distribution

Scientific paper

The radio structure and distribution of ionized gas in Mkn 78 was studied using long-slit spectroscopy and narrow-band imaging, primarily at forbidden O III 5007-A. The association of individual forbidden O-III components with radio structures is shown to be accounted for by a model in which radio-emitting components are moving with velocities of the order of 500 km/s, compressing and shock-heating the ambient medium. It is suggested that the weak forbidden O-III emission extending out to about 10 kpc to the west may be ionized by collimated UV radiation from the nucleus.

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