Doctor of Philosophy (PhD)
Physics and Astronomy
First Committee Member
Second Committee Member
Third Committee Member
Fourth Committee Member
Number of Pages
The broad line regions (BLR) of Type I Active galactic nuclei (AGN) are too small to be spatially resolved even with the most powerful telescopes available. Observations suggest that BLR gas is moving under the influence of the gravitational potential of the central supermassive black-hole (SMBH) and responds to the variations in the ionizing continuum flux of the accretion disk, giving rise to broad emission line variations with a time delay. Reverberation mapping campaigns seek to use this time variability to resolve the BLRs in the time domain instead of spatial domain, providing a way to infer geometry and kinematics of the BLR and calculate the mass of the SMBH. Numerous BLR models have been proposed over the years but only few of them are physically motivated. In this work, we examine the feasibility of constraining the parameters of such a physically motivated model; a disk-wind model of the BLR. We employ a Bayesian inference framework to compare predicted line light curves to an observed line light curve, using simulated data. A shortcoming of reverberation mapped data is that they may contain large gaps between consecutive observations. Therefore, additionally, we implement a method and provide a code to evenly sample real observed continuum light curves in order to carry out similar analysis using real observational data.
Broad Line Region; Reverberation Mapping
Astrophysics and Astronomy | Physics
Weerasooriya, Champika Sandamali, "Probing Broad Line Regions of Active Galactic Nuclei" (2017). UNLV Theses, Dissertations, Professional Papers, and Capstones. 3184.
Available for download on Saturday, December 15, 2018