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Polarization and Pulsars
Brinkman, Casey Lynn
Brinkman, Casey Lynn
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The phenomenon of profile mode switching in pulsars, where the stable average pulse profile changes to another stable state on the timescale of a pulsar’s period, is not well understood. Through my research, I sought to understand how pulsars undergo profile mode switching by an analysis of the polarization across different profile modes of PSR B0329+54. A hypothesized change in rotation vector model parameters between the modes would indicate changes in coherent emission process, a possible source of mode switching. We reject this hypothesis, and instead support a model of pair production in the surface plasma that would cause a change in the available electrons and therefore pulsar intensity. I couple this with the timing solutions for twelve Arecibo pulsars, and a polarization analysis of each in order to construct a comprehensive look at different aspects of pulsar polarimetry.
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2017-01-01
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Pulsar_Thesis.pdf
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