9 Works

Parameter Estimation of Tidally-Deformed White Dwarf Binaries with LISA

Nick Anderson
The LISA mission, currently planned to launch in 2034, will introduce exceptional observation capabilities in the millihertz regime of the gravitational wave spectrum. Galactic compact binaries, including white dwarf binaries, are a primary science target of the mission. At least one well-established verification binary has been categorized as tidally deformed by electromagnetic observations. We investigate the capability of GW observations to measure the tidal effects, as well as other relevant parameters, in tidally deformed systems....

Measurement and Analysis of Obscured Luminous Active Galaxies

Sarah Hesler
Throughout the Fall 2018 and Spring 2019 semesters, I improved my skills in DS9 and IRAF programs by completing a number of tasks in the pursuit of further characterizing a series of high-redshift galaxies believed to be hosts to active galactic nuclei (AGN) as a part of my Tutorial course. These tasks include identifying a radio source in optical images by overlaying contours from the radio onto the optical, investigating several physical characteristics of the...

Planetary Geological Formation

Tim Perry
These past semesters have been focused on researching newer models of planetary system evolution using the solar system as an analog. Observed planetary systems are skewed by what can be observed using current technology and methodology – as a result, they are largely ignored when modeling the solar system’s formation. Instead, current understanding stems from simulations (which are also technologically limited) made to better understand the evolution of the solar system and the bodies within....

What shall this land produce?: pastoral and politics in the old South

John Miller Grammer
The American South seems now a part of the firmament of our national identity. And yet--like the nation itself-it was created, more or less deliberately, at a particular historical moment. The process of its creation was essentially literary; like America itself, the South was written into existence. This study attempts to describe a phase of this process, the period during which the large and expanding geographical area below the Mason-Dixon line, bound together by agriculture...

Implementing covariant Monte Carlo radiation transfer in Athena++

Robin Leichtnam
With the development of computational astrophysics, theoretical study and modeling of astronomical objects has become a leading field in astronomy. An important advancement came with the ability to study black holes and other compact objects by creating mock images and spectra that can be compared to observations, facilitating the study of these bodies, most of which cannot be directly imaged with the current technology. Athena++ is an astrophysical magnetohydrodynamics (MHD) code written in C++, which...

Improving Outcomes for Adjudicated Youth through Special Education Behind the Fence

Alexandra Miller
This dissertation is composed of three manuscripts, each of which addresses issues facing youth with disabilities in the juvenile justice system. The manuscripts are ordered from the broadest topic to the most specific with each preceding study informing the next. The first manuscript was a qualitative examination of a special educator’s process for overcoming systemic issues that often plague the juvenile justice system and prevent adjudicated students with disabilities from receiving services. Among the issues...

Long-Term Timing of Pulsars in NGC 6440: An Updated Mass Limit of Millisecond Pulsar J1748-2021B

Nick Clifford
After 11 years of continued observations with the Green Bank Telescope (GBT), we present updated timing solutions of 6 previously published pulsars in NGC 6440. We obtain improvements in timing parameters that allow us to better describe the dynamics of the cluster, such as measure the proper motion of the pulsars and and estimate the cluster’s motion (μα=−1.04(20) mas yr−1, μδ=−3.0(2.5) mas yr−1). Using additional observing bandwidth, we measure the flux densities and spectral indices...

The Migration of Hot Jupiters and our Outer Planets

Jeremy Lawson
Our understanding of planetary migration has greatly increased since the discovery of exoplanets. A few decades ago, we had little to no knowledge of exoplanets, and our understanding of planetary migration came from the eight planets that are in our solar system. In this paper I will discuss various methods planets migrate and how they settle into stable orbits. I will also discuss some interesting examples of planetary migration such as the migration of the...

An Overview of Formamide Based Nucleosynthesis and Exoplanetary Candidates for Associated RNA Auto-Syntheses

Amrita Singh
This paper comes in two parts; first an analysis and overview of the RNA World theory, formamide-based nucleic acid synthesis, and how formamide fits into and even furthers the theory, and second an exploration of the Kepler Exoplanets Catalogue to determine candidates for prebiotic synthesis. The mere term "RNA World" brings up much of controversy within the realm of the origins of life, but it is the strongest abiogenesis theory, if given a few updates....

Registration Year

  • 2019

Resource Types

  • Text


  • University of Virginia