The spectra (2 to 10 keV) of high luminosity quasars

Details The spectra (2 to 10 keV) of high luminosity quasars The spectra (2 to 10 keV) of high luminosity quasars

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..769t&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 769-776 (SEE N90-258

Astronomy and Astrophysics

Astronomy

11

Accretion Disks, Active Galactic Nuclei, Quasars, Stellar Luminosity, Emission Spectra, Iron, Line Spectra, X Ray Spectra

Scientific paper

The Ginga 2 to 10 keV spectral survey of quasars produced spectra for eight objects. The mean spectral index of the ensemble is identical with that of lower luminosity active galactic nuclei (AGN). Two quasars, 3C273 and PG1416-129, have 2 to 10 keV spectra harder than the mean. The two brightest quasars in the ensemble, 3C273 (radio-loud) and E1821+643 (radio-quiet) are studied. The spectral index of 3C273 is variable in time, but is not correlated with flux. Both objects show clear evidence for iron emission lines; the equivalent widths, and lack of absorption, are inconsistent with fluorescence in cold, solar abundance material in the line-of-sight. The presence, in both quasars, of a variable soft X-ray excess, also suggests that an accretion disk may be present.

Affiliated with

Also associated with

No associations

Rating

The spectra (2 to 10 keV) of high luminosity quasars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The spectra (2 to 10 keV) of high luminosity quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The spectra (2 to 10 keV) of high luminosity quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1614995