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

Off-Axis Gamma Ray Burst Contribution to the Diffuse Gamma Ray Background in the 100-600 keV Range

Creator:: Hodges, Isaac
Abstract:: Gamma ray bursts (GRBs) are short, intense pulses of gamma rays that emit radiation in a narrow beam. Unless the beam is oriented towards the observer, it is often difficult to resolve the bursts against the diffuse gamma ray background (DGRB). The DGRB is a measured source of gamma rays...
Resource Type:: Honors College Thesis
Full Text:: . Tueller. Cosmic X-Ray Back- ground and Earth Albedo Spectra with Swift BAT. The Astrophysical Journal, 689

Zero kinetic energy photoelectron spectroscopy of polycyclic aromatic hydrocarbons

Creator:: Zhang, Jie
Abstract:: In this dissertation, I present electronic spectra of a few polycyclic aromatic hydrocarbons (PAHs): tetracene, pentacene, pyrene, benzo[g,h,i]perylene and benzo[a]pyrene using resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. The work of tetracene and pentacene also combine a laser desorption source with a ZEKE spectrometer, demonstrating...
Resource Type:: Dissertation
Full Text:: study is to offer a database for astrophysical modeling, in terms of both direct line identification

Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons

Creator:: Harthcock, Colin
Abstract:: In this dissertation, I describe spectroscopic studies of jet-cooled polycyclic aromatic hydrocarbons (PAH) and one nitrogen substituted PAH (PANH) using pulsed field zero kinetic energy (ZEKE) photoelectron spectroscopy and resonantly enhanced multiphoton ionization (REMPI) spectroscopy. Recently, there has been a demand for far-infrared (FIR) spectral information of astrophysically relevant molecules...
Resource Type:: Dissertation
Full Text:: astrophysical environment, we have initiated a systematic study of polycyclic aromatic hydrocarbons

Searching for Pulsars for Use in Gravitational Wave Detection

Creator:: Connolly, Genevieve J.
Abstract:: Gravitational waves (GWs) are disturbances in spacetime that can be caused by events such as black hole mergers and supernovae, as well as continuous sources such as binary star systems. GWs offer a new avenue of astrophysical research and can reveal information about the early universe. GW detection can be...
Resource Type:: Honors College Thesis
Full Text:: Survey. I. Survey Description, Data Analysis, and Initial Results”. In: The Astrophysical Journal 791.1

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

The Development of Astronomy in the United States Prior to 1900

Creator:: Harburg, William A.
Abstract:: From the earliest English colonization to the present day, there has been interest in astronomy in this country. The purpose of this thesis is to show how the science of astronomy developed in America from the earliest observations by educated colonists using imported instruments and publishing in European journals, to...
Resource Type:: Masters Thesis
Full Text:: sources are taken from modern reprints. The secondary sources are, for the most part, journal articles

The lag–luminosity correlation in time-resolved episodes of long gamma-ray bursts

Creator:: Kowash, Samuel J.
Abstract:: We present an analysis of the relationship between spectral lag and luminosity in time-resolved segments of long gamma-ray bursts detected by BATSE, an experiment aboard the Compton Gamma Ray Observatory satellite. For full bursts, there is a well-established correlation between the lag, which is easily computed, and the total burst...
Resource Type:: Honors College Thesis
Full Text:: Astrophysical Journal, 486(2):928, Sept. 1997. ISSN 0004-637X. doi: 10.1086/304566. URL http

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

Hydrodynamic Properties of Gamma-Ray Burst Outflows Deduced from the Thermal Component

Creator:: Pe'er, Asaf, Barlow, Hugh, O'Mahony, Shane, Margutti, Raffaella, Ryde, Felix, Larsson, Josefin, Lazzati, Davide, and Livio, Mario
Abstract:: See article for Abstract.
Resource Type:: Article
Full Text:: . The Astrophysical Journal, 813(2), 127. doi:10.1088/0004-637X/813/2/127 10.1088/0004-637X/813/2/127

ScholarsArchive@OSU

The Formation of Astrophysical Dust

Off-Axis Gamma Ray Burst Contribution to the Diffuse Gamma Ray Background in the 100-600 keV Range

Zero kinetic energy photoelectron spectroscopy of polycyclic aromatic hydrocarbons

Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons

Searching for Pulsars for Use in Gravitational Wave Detection

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

The Development of Astronomy in the United States Prior to 1900

The lag–luminosity correlation in time-resolved episodes of long gamma-ray bursts

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

Hydrodynamic Properties of Gamma-Ray Burst Outflows Deduced from the Thermal Component

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