Observations of a radio source in the nucleus of M81 with dimensions less than 1300 astronomical units

Details Observations of a radio source in the nucleus of M81 with dimensions less than 1300 astronomical units Observations of a radio source in the nucleus of M81 with dimensions less than 1300 astronomical units

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...210l.121k&link_type=abstract

Astrophysical Journal, vol. 210, Dec. 15, 1976, pt. 2, p. L121-L122.

Astronomy and Astrophysics

Astrophysics

44

Extragalactic Radio Sources, Galactic Nuclei, Interferometry, Radiant Flux Density, Spiral Galaxies, Brightness Temperature, Galactic Structure, Spectrum Analysis

Scientific paper

Very-long-baseline interferometer observations of the nucleus of M81 show an unresolved radio source with linear dimensions not exceeding about 1300 AU. This is the smallest extragalactic radio source whose size has been directly measured. Its luminosity is intermediate between that of the compact radio source at the galactic center and the luminosity of compact sources found in the centers of extended radio galaxies and quasars.

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