Radio properties of optically selected quasars

Details Radio properties of optically selected quasars Radio properties of optically selected quasars

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391..560v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. 560-568.

Astronomy and Astrophysics

Astronomy

71

Galactic Radio Waves, Quasars, Radio Astronomy, Red Shift, Sky Surveys (Astronomy), Luminosity, Radial Distribution, Wavelengths

Scientific paper

Radio observations are presented for 124 QSOs from the Large Bright Quasar Survey (LBQS). The QSOs were observed at 8.4 GHz with the Very Large Array (VLA) in the C and C/D hybrid array configurations. An average 3-sigma noise limit of 0.255 mJy was reached, allowing 24, or 19 percent of the QSOs to be detected. The noise statistics are such that about one spurious 3-sigma detection is expected to occur in the sample. The radio detection probability is independent of both the redshift and B-magnitude, and the distribution of the parameter R8.4 (radio-to-optical luminosity ratio) is independent of both redshift and absolute magnitude. All of the sources are unresolved. The log R8.4 distribution of the LBQS sample covers nearly four orders of magnitude and appears to be bimodal. Comparisons with the Palomar Bright Quasar Survey (BQS) are hampered by a potential selection effect in the BQS data. Using both samples in a region unaffected by this bias, it appears that the radio-loud fraction of optically selected QSOs decreases with increasing redshift and with fainter absolute magnitude.

Affiliated with

Also associated with

No associations

Rating

Radio properties of optically selected 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 Radio properties of optically selected quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio properties of optically selected quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1199803