Cygnus A at 99 GHz: Observations of the three principal components and interpretation of the central source

Details Cygnus A at 99 GHz: Observations of the three principal components and interpretation of the central source Cygnus A at 99 GHz: Observations of the three principal components and interpretation of the central source

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...220l..77h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 220, Mar. 15, 1978, p. L77-L80.

Astronomy and Astrophysics

Astronomy

17

Extremely High Frequencies, Radio Astronomy, Radio Sources (Astronomy), Synchrotron Radiation, Galactic Nuclei, Plasma Radiation, Radio Spectra

Scientific paper

The three principal emission components of Cygnus A have been observed at 99 GHz, the highest frequency at which radio measurements of this source have been accomplished. The observations show no definite indication of a high-frequency cutoff in the spectrum of the compact central component, which perhaps may be attributed to an optically thin synchrotron source that peaks at a frequency of several hundred GHz.

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