Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...232...19b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 232, no. 1, June 1990, p. 19-26.
Astronomy and Astrophysics
Astronomy
110
Active Galaxies, Compact Galaxies, Galactic Radio Waves, Radio Galaxies, Diffuse Radiation, Radio Astronomy, Radio Spectra, Radio Telescopes
Scientific paper
49 cm, 6 cm, and 20 cm observations of the compact double ratio source 0108 + 388 are presented. Extended emission about 20 deg to the east of the core is detected which resembles a hot spot/lobe with a bridge of emission extending back to the core. This is the first detection of extended emission associated with such a source, and it is inconsistent with the suggestion that such sources are very young classical double radio sources. The inconsistency can be reconciled if the activity in this object is recurrent and the emission is the relic of a previous epoch of activity. Alternatively, the source may be a normal-aged radio galaxy in which most of the radio-emitting plasma is currently unable to escape the nuclear regions of the galaxy. The steep low-frequency spectrum of the core is probably related to the origin of the compact double and suggests that both components are very sharply confined on both their inner and outer edges.
Baum Stefi A.
de Bruyn Ger A.
Murphy David W.
O'Dea Christopher P.
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