X-ray spectral variability of 3C273

Details X-ray spectral variability of 3C273 X-ray spectral variability of 3C273

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..623t&link_type=abstract

(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews

Astronomy and Astrophysics

Astronomy

18

Exosat Satellite, Quasars, X Ray Spectra, Compton Effect, Millimeter Waves, Relativistic Electron Beams, X Ray Astronomy

Scientific paper

3C 273 has been monitored by Exosat over the period of December 1983 to June 1984 in four observations. In the December observation the flux was high and the spectrum showed a power law index of 4.5, changing to 0.9 at approximately 8 keV. In subsequent observations the flux dropped to 40 percent of its original value, and the hard tail disappeared. In the last observation the low-energy flux increased by a factor of 2 with no accompanying medium energy flux increase.

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