Abstract
In a sample of 18 superluminal quasars with lower limits of the jet
outflow angle (th) between 0 and 30 degrees, and with Ha line emission
we find: 1) a positive correlation between line velocity width at half
maximum (FWHM) and th, implying a ratio of planar to random broad line
region (BLR) motions to be ˜ 10:1, and 2) a positive correlation
between the line equivalent width (EW) and th. The slope of this trend
is stronger than the expected by a geometrical thin disc, while the
strong flat trend of EW with the Doppler factor, rules out an important
optical relativistic beaming in the 15 strong lined objects. The beaming
found in these objects might be due to a geometrical thick disc, or/and,
to an increasing of the optical absorption with th.
Original language | English |
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Title of host publication | Active Galactic Nuclei: from Central Engine to Host Galaxy, meeting held in Meudon, France, July 23-27, 2002 |
Publisher | Astronomical Society of the Pacific |
Pages | 127 |
Volume | 290 |
ISBN (Print) | 1-58381-135-4 |
Publication status | Published - 2003 |