Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187..757w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 187, June 1979, p. 757-759. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
5
Light Curve, Quasars, Statistical Analysis, X Ray Astronomy, Compton Effect, Luminous Intensity, Stellar Luminosity
Scientific paper
Observations of the quasar 3C 273 made during 1975-77 have shown that the X-ray flux varied on a time scale of several months. No similar variation was present in radio and optical data taken at similar times. If this variation results from luminosity variations of a central compact object, then an upper limit of 4 x 10 to the 17th cm can be set on its dimensions.
Ricketts M. J.
White Glen J.
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