Other
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.270..663p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 270, NO. 3/OCT1, P. 663, 1994
Other
17
Scientific paper
We present ROSAT data for the quasar E 1346 + 266, an AGN identified as part of the Einstein Ultra-Soft Survey, and two other AGN nearby, EX0 1346.4 + 2637 and EX0 1346.2 + 2645. E 1346 + 266 has an unusually high redshift (0.92) for a quasar with a strong, ultrasoft X-ray (0.25 keV) excess. Consequently, the effective restframe temperature of the soft component in E 1346 + 266 is high (blackbody kT_eff_ ~120 eV), and its soft-component luminosity may be the strongest identified in any soft-excess AGN to date. We find that the temperatures and luminosities of bare accretion disc spectra are too low to account for this soft X-ray excess. The addition of a hot, optically thin corona around a geometrically thick disc gives a better agreement with the X-ray data; reprocessing in cool, dense clouds is an alternative. However, published spectra for both models predict an excess of flux in the optical IR relative to the X-rays.
Cordova France A.
Mason Keith O.
Puchnarewicz Elizabeth M.
No associations
LandOfFree
A High-Redshift Ultrasoft X-Ray Active Galactic Nuclei 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 A High-Redshift Ultrasoft X-Ray Active Galactic Nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A High-Redshift Ultrasoft X-Ray Active Galactic Nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1072146