Long-term variability of a complete sample of quasars

Details Long-term variability of a complete sample of quasars Long-term variability of a complete sample of quasars

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100...56c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 100, July 1990, p. 56-59.

Astronomy and Astrophysics

Astronomy

39

Active Galactic Nuclei, Astronomical Photography, Quasars, Variability, Photographic Plates, Schmidt Cameras, Statistical Analysis

Scientific paper

The long-term variability of a complete sample of quasars selected in the field of the SA 94 has been investigated. Using Schmidt plates covering a time baseline of seven years, about one-third of the quasars are found to be variable. It is suggested that all the quasi-stellar objects are variable with amplitudes of a few tenths of a magnitude on timescales of the order of some years in their restframes. The application of the variability technique to the selection of complete samples of quasars is discussed. The timescales estimated can be easily accounted for in the accreting black hole with thermal and viscous timescales. The variability is found to be correlated with the absolute magnitude and/or the redshift.

Affiliated with

Also associated with

No associations

Rating

Long-term variability of a complete sample of 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 Long-term variability of a complete sample of quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term variability of a complete sample of quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1091846