A two-screen model of the variable scintillation of pulsar B1737+13
Author ORCID Identifier
Thesis - Open Access
Bachelor of Arts
Physics and Astronomy
Radio astronomy, Radio pulsars, Interstellar medium, Interstellar scattering, Pulsar scintillation, Pulsars: individual (B1737+13)
In this thesis, I discuss a set of observations of the pulsar B1737+13 and develop a two scattering screen model to explain the observed variability in the pulsar’s scintillation behavior. I begin by introducing the phenomenon of pulsar scintillation and the underlying physical framework behind one-dimension scattering screen models and scintillation arcs. I then discuss the methods used to analyze the observations as well as the methods of simulating two-screen scattering to compare to the observations. I then present the results of the analysis and simulations. To do this, I develop the idea of interaction arcs to characterize scattering in the two-screen model. I find that the two-screen model and interaction arcs are able to explain key features in the observed variability in the pulsar’s scintillation behavior. The explanatory power of this two-screen model provides strong evidence for the existence of two scattering screens along the line of sight to B1737+13.
Siegel, Sammy, "A two-screen model of the variable scintillation of pulsar B1737+13" (2023). Honors Papers. 886.