Index Catalog // ScholarsArchive@OSU

The Formation of Astrophysical Dust

Creator:: Mauney, Christopher M.
Abstract:: The formation of carbonaceous and silicate precursor molecules to astrophysical dust grains is investigated. Using density functional theory (DFT) in combination with global optimization techniques, the ground-state binding energies of dust precursors are determined. These results are employed in atomistic nucleation theory (ANT) to predict the critical size and nucleation...
Resource Type:: Dissertation
Full Text:: of Astrophysical Dust Abstract approved: Davide Lazzati The formation of carbonaceous and silicate

Journey to the Center of GW170817: Bayesian parameter estimation of outflows from binary neutron star mergers

Creator:: Rodriguez, Isabel J.
Abstract:: The discovery of GW170817 provided the first empirical evidence that merging binary neutron star systems are both progenitors of short gamma-ray bursts, as well as the primary sites of the nucleosynthetic rapid-neutron capture process. Initially detected as gravitational wave (GW) and gamma-ray burst (GRB) triggers, GW170817 was well-localized and follow-up...
Resource Type:: Masters Thesis
Full Text:: . By using Bayesian parameter estimation analysis to connect astrophysical data with numerical models

Beating Modes in Protostellar Disks

Creator:: Varga, Attila V.
Abstract:: Computational simulations of disks are becoming an important tool to predict the the evolution of protostars and disks to better understand the formation of planets. Past research has shown that the evolution of disks and their protostar can be altered through the interaction between gravity and hydrodynamic instabilities. We perform...
Resource Type:: Undergraduate Thesis
Full Text:: breakup of self-gravitating rings, tori, and thick accretion disks. The Astrophysical Journal, 361(2):394

A semi-portable, infra-red, vacuum spectrometer

Creator:: Bolinger, Duis Donald
Resource Type:: Masters Thesis
Full Text:: Transactions, vol. 130, p 1, 1840. 7. Keeler, J. E. Astrophysical Journal, VOI. 3, p 63, 1895. 8

Dust in the wind : the role of recent mass loss in long gamma-ray bursts

Creator:: Margutti, R., Guidorzi, C., Lazzati, D., Milisavljevic, D., Kamble, A., Laksar, T., Parrent, J., Gehrels, N. C., and Soderberg, A. M.
Abstract:: We study the late-time (t > 0.5 days) X-ray afterglows of nearby (z < 0.5) long gamma-ray bursts (GRBs) with Swift and identify a population of explosions with slowly decaying, super-soft (photon index Γx > 3) X-ray emission that is inconsistent with forward shock synchrotron radiation associated with the afterglow....
Resource Type:: Article
Full Text:: in the Wind: the Role of Recent Mass Loss in Long Gamma-Ray Bursts. The Astrophysical Journal, 805(2

Monte Carlo Radiation Transfer Simulations of Gamma Ray Burst Prompt Emission

Creator:: Parsotan, Tyler M.
Abstract:: Gamma Ray Bursts (GRBs) are the most energetic explosions in the Universe, producing up to $\sim10^{53}$ ergs of energy in the first few seconds of their emission -- the so-called prompt phase that is dominated by high energy X-ray and $\gamma$-ray photons. The very large luminosities released in these events...
Resource Type:: Dissertation
Full Text:: make measurements of nearly every astrophysical system, each theoretical model that attempts to

Detecting Nanohertz Gravitational Waves by Searching for and Timing Millisecond Pulsars

Creator:: Nye, Brandon J.
Abstract:: Detecting gravitational waves is a topic at the forefront of physics. The first gravitational wave was detected by LIGO in 2015. This wave had a frequency in the 10s of Hz. This project is focused on detecting gravitational waves on the nanohertz spectrum using a pulsar timing array. This array...
Resource Type:: Undergraduate Thesis
Full Text:: Set: Search for An Isotropic Stochastic Gravitational-Wave Background”, The Astrophysical Journal

Checking for Noise Model Consistency Between the NANOGrav 12.5- and 15-Year Data Sets

Creator:: Ashby, Andrew
Abstract:: The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is an international collaboration that seeks to use perturbations in the time of arrivals of pulsar signals to detect gravitational waves in the nanohertz range of frequencies. The 15-year data set will be released as of June 2023. It is a...
Resource Type:: Undergraduate Thesis
Full Text:: - rowband Timing of 47 Millisecond Pulsars”. In: The Astrophysical Journal Sup- plement Series 252.1 (Dec

Deriving relationships between number of observed short gamma ray bursts and viewing angle

Creator:: Micallef, John T.
Abstract:: Gamma ray bursts are some of the brightest events in the entire observable universe. Since the late 1960’s, thousands of gamma ray bursts have been observed and they have been researched extensively. However, there are still many mysteries which remain unsolved. One such mystery is whether or not the viewing...
Resource Type:: Undergraduate Thesis
Full Text:: Statistics,” The Astrophysical Journal, vol. 548, no. 2, pp. 522–531, 2001. [4] S. Carroll, “The

Search for Non-Einsteinian Polarization Modes in the Gravitational-Wave Background using NANOGrav’s 12.5 Year Data Set

Creator:: Laal, Nima
Abstract:: I led a collaborative project involving a search for an evidence of a gravitational wave background (GWB) with all the spatial correlations allowed by general metric theories of gravity using NANOGrav’s 12.5 year data set. The search found no substantial evidence in favor of the existence of such correlations. The...
Resource Type:: Masters Thesis
Full Text:: International Pulsar Timing Array. This work was published in the Astrophysical Journal Letters on December

ScholarsArchive@OSU

The Formation of Astrophysical Dust

Journey to the Center of GW170817: Bayesian parameter estimation of outflows from binary neutron star mergers

Beating Modes in Protostellar Disks

A semi-portable, infra-red, vacuum spectrometer

Dust in the wind : the role of recent mass loss in long gamma-ray bursts

Monte Carlo Radiation Transfer Simulations of Gamma Ray Burst Prompt Emission

Detecting Nanohertz Gravitational Waves by Searching for and Timing Millisecond Pulsars

Checking for Noise Model Consistency Between the NANOGrav 12.5- and 15-Year Data Sets

Deriving relationships between number of observed short gamma ray bursts and viewing angle

Search for Non-Einsteinian Polarization Modes in the Gravitational-Wave Background using NANOGrav’s 12.5 Year Data Set

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