Constraining the Magneto-Ionic Environment of Galactic Supernova Remnants
| dc.contributor.advisor | Brown, Jo-Anne | |
| dc.contributor.advisor | Kothes, Roland | |
| dc.contributor.author | Scullion, Larson | |
| dc.contributor.committeemember | Spanswick, Emma | |
| dc.contributor.committeemember | Plume, Rene | |
| dc.contributor.committeemember | Burchill, Johnathan | |
| dc.date | 2025-02 | |
| dc.date.accessioned | 2024-12-18T22:46:21Z | |
| dc.date.available | 2024-12-18T22:46:21Z | |
| dc.date.issued | 2024-12-18 | |
| dc.description.abstract | The Galactic Magnetic Field (GMF) plays a crucial role in the evolution of the Milky Way, influencing where stars can be born and supporting large-scale structures. Despite this, relatively little is known about the GMF, prompting many efforts to map and constrain the magnetic field strength and direction in as much of the sky as possible. One of the most useful analysis tools for doing so is the observation of rotation measures (RMs), a quantity describing the effects of Faraday rotation on polarised radiation that depends on the magnetic field threading the volume of electron gas the radiation travels through. By calculating RMs from polarised sources at known distances, we are able to deduce properties of the GMF, provided that we know the distribution of electrons along the light propagation path. Historically, this technique is most often applied to unresolved compact sources, but analysis of these sources only provide us information about the line-of-sight magnetic field. My research focuses on applying a similar technique to supernova remnants (SNRs), extended sources of polarised emission in our Galaxy, in order to determine `anchor points' of the GMF where the 3-dimensional magnetic field can be found. I refined existing work using SNRs to develop techniques of depolarisation analysis and RM gradient analysis that constrain the GMF and provide necessary context for the magneto-ionic environment around these objects. | |
| dc.identifier.citation | Scullion, L. (2024). Constraining the magneto-Ionic environment of galactic supernova remnants (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. | |
| dc.identifier.uri | https://hdl.handle.net/1880/120253 | |
| dc.language.iso | en | |
| dc.publisher.faculty | Graduate Studies | |
| dc.publisher.institution | University of Calgary | |
| dc.rights | University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. | |
| dc.subject.classification | Astronomy and Astrophysics | |
| dc.title | Constraining the Magneto-Ionic Environment of Galactic Supernova Remnants | |
| dc.type | master thesis | |
| thesis.degree.discipline | Physics & Astronomy | |
| thesis.degree.grantor | University of Calgary | |
| thesis.degree.name | Master of Science (MSc) | |
| ucalgary.thesis.accesssetbystudent | I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible. |