3C 245 - A moderately beamed quasar

Details 3C 245 - A moderately beamed quasar 3C 245 - A moderately beamed quasar

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228...17f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 1, Feb. 1990, p. 17-22.

Astronomy and Astrophysics

Astronomy

12

Quasars, Radio Jets (Astronomy), Astronomical Spectroscopy, Very Long Base Interferometry

Scientific paper

MERLIN observations at 408 and 1666 MHz, and European VLBI observations at 4990 MHz of 3C 245 are presented, as well as optical spectroscopy with the 200-inch Hale-telescope of the associated quasar 1040 + 123. These, and related data, suggest that 3C 245 should be identified with a moderately beamed quasar, i.e., an extended, double-lobed radio source seen at an angle to the line of sight in the range 10 to 20 degrees, with emitting material moving with effective Lorentz factor in the range 2 to 5.

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