HR976 and 4C34.13 - an X-ray odd couple

Details HR976 and 4C34.13 - an X-ray odd couple HR976 and 4C34.13 - an X-ray odd couple

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....91l...7c&link_type=abstract

Astronomy and Astrophysics, vol. 91, no. 3, Nov. 1980, p. L7, L8.

Astronomy and Astrophysics

Astrophysics

2

A Stars, Binary Stars, Quasars, Stellar Luminosity, X Ray Sources, Luminous Intensity, Radiant Flux Density

Scientific paper

The single-lined spectroscopic binary Am star HR976 was observed by the Imaging Proportional Counter on the Einstein Observatory. Two sources with similar X-ray flux were detected in the IPC field: HR976 at 2.6 x 10 to the -13th erg/sq cm-s; and 4C34.13, a quasar, at 2.4 x 10 to the -13th erg/sq cm-s. The soft X-ray flux from HR976 is a factor of one-hundred less than the previous report, and its total X-ray luminosity is about 8 x 10 to the 28th erg/s. The quasar, which is a much harder X-ray source than the A star, has an estimated total luminosity of 8 x 10 to the 44th erg/s.

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