X-ray and ultraviolet observations of the Seyfert galaxy MCG 8-11-11

Details X-ray and ultraviolet observations of the Seyfert galaxy MCG 8-11-11 X-ray and ultraviolet observations of the Seyfert galaxy MCG 8-11-11

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...359...98t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 359, Aug. 10, 1990, p. 98-103.

Astronomy and Astrophysics

Astrophysics

16

Exosat Satellite, Seyfert Galaxies, Ultraviolet Spectra, X Ray Spectra, Accretion Disks, Bremsstrahlung, Compton Effect, Photon Absorptiometry, X Ray Stars

Scientific paper

MCG 8-11-11 was observed in the 0.5-8 keV band with the EXOSAT observatory at 9 epochs in 1983-1986. Quasi-simultaneous UV observations were obtained in all but one case. The X-ray spectra are well fitted by absorbed power laws. Small variations of the spectral shape are found with softening of the source at brighter states. No correlation between UV and X-ray fluxes is apparent, suggesting an independent origin of the UV, consistent with the absence of indication of a soft X-ray excess.

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