| תקציר: | First I will present results of selected AGN variability campaigns taken
with the 10m Hobby-Eberly Telescope. Based on spectral variability
campaigns we can derive the distance of the line emitting regions from the
center, the structure in the broad-line region (BLR) based on different
emission lines, as well as the mass of the central black hole.
In a few cases we get information on the structure and velocity field of
the broad-line region based on line segment variations - the so called
2D-reverberation mapping method.
Finally, I will introduce the results of a recent Nature paper:
There exists a correlation between emission line width and emission line
shape in the spectra of AGN. Modeling this relation we can
demonstrate that broad-line active galactic nuclei rotate faster than
narrow-line ones and that the BLR geometry depends on the rotational
velocity. |