The radio spectrum of OQ 208-Markarian 668

Details The radio spectrum of OQ 208-Markarian 668 The radio spectrum of OQ 208-Markarian 668

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978afz....14..447k&link_type=abstract

(Astrofizika, vol. 14, July-Sept. 1978, p. 447-454.) Astrophysics, vol. 14, no. 3, Jan. 1979, p. 245-249.

Astronomy and Astrophysics

Astronomy

7

Microwave Emission, Radio Sources (Astronomy), Radio Spectra, Seyfert Galaxies, Synchrotron Radiation, Centimeter Waves, Polarization Characteristics, Radiant Flux Density, Radio Astronomy

Scientific paper

Radio measurements were made at 1.35, 1.93, 2.8, and 3.8 cm during April 1978 and at 6 and 11 cm during August and November 1977, respectively, supplementing and extending previous work on OQ 208-Markarian 668. The radio source has a curved spectrum with a maximum at centimeter wavelengths. The spectral index is approximately -1.35 between 3.8 and 1.35 cm and approximately +0.65 between 11 and 6 cm. The synchrotron source may be located within a dense ionized medium. It is suggested that OQ 208-Markarian 668 is a class 1 Seyfert galaxy.

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