Self-Similar Models of Quasar Outflow Shock Structures

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dc.contributor.advisorHall, Patrick B.
dc.contributor.authorWeiss, Erik Adam
dc.date.accessioned2024-03-18T18:13:06Z
dc.date.available2024-03-18T18:13:06Z
dc.date.issued2024-03-16
dc.date.updated2024-03-16T10:47:21Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractSupersonic winds of outflowing material are observed and/or predicted in a number of astrophysical systems; such winds may drive an expanding shock structure that shocks and pushes the ambient interstellar medium (ISM) outward. This thesis analyses, combines and expands on existing analytic self-similar models of these structures in the context of quasar accretion disk winds; we then search for the bulk acceleration (positive or negative) of low-velocity Ca II in the quasar SDSS J030000.0+004828.0 (J0300) and compare our results to model predictions. We find a strong upper limit on the acceleration magnitude, yielding plausible model constraints, but the observed range of gas velocities implies that the Ca II velocity profile does not coincide with that of the shocked ISM. We conclude with a discussion of recent results regarding J0300's outflow properties and briefly investigate the possibility of pre-existing ISM cloud disruption as an explanation for the observed Ca II velocity profile.
dc.identifier.urihttps://hdl.handle.net/10315/41934
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectAstrophysics
dc.subjectAstronomy
dc.subject.keywordsQuasars
dc.subject.keywordsAstrophysics
dc.subject.keywordsModelling
dc.subject.keywordsOutflows
dc.subject.keywordsAccretion
dc.subject.keywordsAccretion disks
dc.subject.keywordsGalaxies--jets and outflows
dc.subject.keywordsShock waves
dc.subject.keywordsHydrodynamics
dc.subject.keywordsSpectroscopy
dc.subject.keywordsQuasars: absorption
dc.subject.keywordsMethods--data analysis
dc.titleSelf-Similar Models of Quasar Outflow Shock Structures
dc.typeElectronic Thesis or Dissertation

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