Unit:
Τομέας Αστροφυσικής, Αστρονομίας και ΜηχανικήςLibrary of the School of Science
Author:
Σταθόπουλος Δημήτριος
Supervisors info:
Μ.Δανέζης Επικ. Καθηγ., (Επιβλέπων), Α. Μαστιχιάδης Αναπλ. Καθηγ., Κ. Τσίγκανος Καθηγ.
Original Title:
Μελετώντας τα φάσματα των Ενεργών γαλαξιακών Πυρήνων. Η περίπτωση των γραμμών απορρόφησης του C IV στα UV φάσματα των HiBALQSOs
Summary:
As we know, HiBALQSOs present broad and very complex absorption lines. Although
in our days we accept that these lines are the synthesis of independent
absorption lines which are created in different absorbing clouds (Broad Line
Region Clouds); a thorough study of the absorbing regions has not yet been
accomplished. This lies on the fact that the radiative transfer equation for a
complex atmospheric plasma region (comprised of many clouds) was not solved. In
this work, we studied the UV absorption lines of C IV in the case of 30
HiBALQSOs. Based on our spectral analysis we succeeded in reproducing
theoretically the complex absorption profiles and calculating a series of
physical parameters of the absorbing clouds (radial and rotational velocities
of plasma clouds, random velocities of ions inside the plasma clouds, absorbed
energy, FWHM, column density, optical depth). Last but not least, by
correlating all of these physical parameters we managed to extract general
conclusions about the physical structure and kinematics of plasma clouds that
create the UV absorption lines of C IV in HIBALQSOs.
Keywords:
Spectra, AGN - Active Galactic Nuclei, Ultraviolet, QUASARs - BALQSOs, Absorption Lines
Number of references:
400
