Investigation into the Spatial Distribution of AGN Companion Galaxies in Gravitationally Isolated Environments

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dc.contributor.advisorRobertis, Michael De
dc.creatorSivasubramanium, Janakan
dc.date.accessioned2018-11-21T13:58:15Z
dc.date.available2018-11-21T13:58:15Z
dc.date.copyright2018-09-04
dc.date.issued2018-11-21
dc.date.updated2018-11-21T13:58:15Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractActive galaxies are an important subclass of galaxies, distinguished by an energetic core driven by enhanced accretion onto a central supermassive black hole. However, this accretion mechanism inevitably opens up a problem: what source provides the gaseous fuel for black hole accretion? In this research project, we examine the possibility that these active galaxies have engaged in some form of galactic cannibalism of their neighbouring galaxies to acquire a fuel supply to power their cores. By using data from the Sloan Digital Sky Survey (SDSS), we conduct an environmental survey around active/non-active galaxies and map out the spatial distribution of their companions. Our results show that, in gravitationally isolated environments, the local environment (less than 0.5 Mpc) around active galaxies are seen to have a scarcity of neighbouring galaxies relative to the non-active control sample a possible indication of a history of mergers and consumptions.
dc.identifier.urihttp://hdl.handle.net/10315/35595
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectPhysics
dc.subject.keywordsActive
dc.subject.keywordsGalaxies
dc.subject.keywordsGalaxy
dc.subject.keywordsAGN
dc.subject.keywordsAGNs
dc.subject.keywordsSpatial
dc.subject.keywordsDistribution
dc.subject.keywordsCompanion
dc.subject.keywordsCompanions
dc.subject.keywordsNeighbour
dc.subject.keywordsNeighbor
dc.subject.keywordsEnvironment
dc.subject.keywordsSupermassive
dc.subject.keywordsBlack hole
dc.subject.keywordsAccretion
dc.subject.keywordsFuel
dc.subject.keywordsCore
dc.subject.keywordsMerger
dc.subject.keywordsConsumption
dc.titleInvestigation into the Spatial Distribution of AGN Companion Galaxies in Gravitationally Isolated Environments
dc.typeElectronic Thesis or Dissertation

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