Properties of the simulated agn activity function in isolated galaxy mergers

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dc.contributor.advisor Thacker, Robert John, 1970-
dc.creator Hani, Maan H.
dc.date.accessioned 2015-10-08T15:01:54Z
dc.date.available 2015-10-08T15:01:54Z
dc.date.issued 2015
dc.identifier.other QB857.5 M47 H36 2015
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/26401
dc.description xv, 122 leaves : ill. (chiefly col.) ; 29 cm.
dc.description Includes abstract.
dc.description Includes bibliographical references (leaves 109-122).
dc.description.abstract Numerical modeling of active galactic nuclei (AGN) poses many challenges, from uncertainties about the underlying physics to dynamic range issues. We present a study of simulated activity functions (AF; the differential of the amount of time spent by a black hole above a given Eddington ratio) in simulations of mergers of Milky-Way like galaxy models using seven different BH feedback algorithms, accretion algorithms, and initial conditions. When considered over the entire simulation the simulated AFs are more dominant at high Eddington ratios than observationally (Schechter-type) inferred AFs. However, during passive evolutionary stages there is considerably closer agreement with observational results. We also demonstrate that two separate algorithms produce AFs which are approximately mass invariant, in agreement with observations. Lastly, we show that numerical uncertainties in AFs and other properties of the remnant such as black hole mass, star formation rates, and accretion rates, are well below a factor of two. en_CA
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QB857.5.M47
dc.subject.lcsh Galaxy mergers -- Mathematical models
dc.subject.lcsh Galaxies -- Evolution -- Mathematical models
dc.subject.lcsh Active galactic nuclei
dc.title Properties of the simulated agn activity function in isolated galaxy mergers en_CA
dc.type Text en_CA
thesis.degree.name Master of Science in Astronomy
thesis.degree.level Masters
thesis.degree.discipline Astronomy and Physics
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)


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