Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources?

Details Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources? Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources?

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..115s&link_type=abstract

XMM-Newton Proposal ID #06728602

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sdss J1231+0138, Sdss J0928+1848

Scientific paper

The Sloan Digital Sky Survey has recently discovered a remarkable group of ~80 quasars at z=2.2-5.9 with extremely weak emission lines in their rest-frame UV spectra. We propose to extend our XMM-Newton observations of such sources and obtain imaging spectroscopy of four quasars of this class with a total exposure time of 165 ks, providing ~1000 photons per source. This will enable an accurate measurement of the hard-X-ray photon index required for a robust determination of the accretion rate in each source. Steep spectral slopes will indicate that high accretion rates may be responsible for the intrinsic weakness of the UV emission lines. The proposed observations will lead to new insights about the accretion process and broad emission line formation in all active galactic nuclei.

Affiliated with

Also associated with

No associations

Rating

Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources? 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 Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weak Line Quasars at High Redshift: Extremely High Accretion Rate Sources? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1314324