X ray spectra of OVV QSOs

Details X ray spectra of OVV QSOs X ray spectra of OVV QSOs

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..837o&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 2: AGN and the X Ray Background p 837-842 (SEE N90-258

Astronomy and Astrophysics

Astronomy

13

Bl Lacertae Objects, Line Spectra, Quasars, Red Shift, Variations, X Ray Spectra, Celestial Bodies, Emission Spectra, Iron, Polarized Radiation, Stellar Luminosity, Stellar Models, Stellar Motions, X Ray Sources

Scientific paper

Results on X-ray observations of OVV QSOs with Ginga are reported. Nine objects with redshift ranging from 0.21 to 1.40 were observed. X-ray spectra in 2 to 20 keV were obtained from eight of them. Seven OVVs showed power law photon indices between 1.4 and 2.0. One object (3CR454.3) had a steeper index around 2.7. No clear correlation was seen between the spectral slope and the redshift or luminosity. None of the OVVs showed significant iron emission lines. These spectral features together with the extremely short time variation detected from 3C279 in its outburst suggest that the continuum X-ray emission of OVVs is beamed toward us.

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