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

The Ore bin ; Vol. 30 No. 2 (February 1968)

Creator:: Oregon. Dept. of Geology and Mineral Industries, Emilia, David A., Berg, Joseph W., Bales, W. E., Applegate, Shelton P., Heinrichs, Donald F., and Pietrafesa, Leonard J.
Resource Type:: Journal
Full Text:: Astrophysical Society, Victoria, B. C.; Mr. Normal Rasmussen of thy: University of Washington; Mr. Mark Castner

Formation and Properties of Astrophysical Carbonaceous Dust. I. Ab-initio Calculations of the Configuration and Binding Energies of Small Carbon Clusters

Creator:: Mauney, Christopher, Nardelli, Marco Buongiorno, and Lazzati, Davide
Abstract:: The binding energies of n < 100 carbon clusters are calculated using the ab initio density functional theory code Quantum Espresso. Carbon cluster geometries are determined using several levels of classical techniques and further refined using density functional theory. The resulting energies are used to compute the work of cluster...
Resource Type:: Article
Full Text:: and binding energies of small carbon clusters. Astrophysical Journal, 800(1), 30. doi:10.1088/0004

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

Zero kinetic energy photoelectron spectroscopy of jet cooled benzo[a]pyrene from resonantly enhanced multiphoton ionization

Creator:: Zhang, Jie, Harthcock, Colin, Han, Fangyuan, and Kong, Wei
Abstract:: We report zero kinetic energy (ZEKE) photoelectron spectroscopy of benzo[a]pyrene (BaP) via resonantly enhanced multiphoton ionization (REMPI). Our analysis concentrates on the vibrational modes of the first excited state (S₁) and those of the ground cationic state (D₀). Similar to pyrene, another peri-condensed polycyclic aromatic hydrocarbon we have investigated, the...
Resource Type:: Article
Full Text:: THE JOURNAL OF CHEMICAL PHYSICS 135, 244306 (2011) Zero kinetic

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

Short Gamma-Ray Bursts from the Merger of Two Black Holes

Creator:: Perna, Rosalba, Lazzati, Davide, and Giacomazzo, Bruno
Abstract:: Short gamma-ray bursts (GRBs) are explosions of cosmic origins believed to be associated with the merger of two compact objects, either two neutron stars or a neutron star and a black hole (BH). The presence of at least one neutron star has long been thought to be an essential element...
Resource Type:: Article
Full Text:: , a BH is generally expected to be formed The Astrophysical Journal Letters, 821:L18 (6pp), 2016

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

The Ore bin ; Vol. 30 No. 2 (February 1968)

Formation and Properties of Astrophysical Carbonaceous Dust. I. Ab-initio Calculations of the Configuration and Binding Energies of Small Carbon Clusters

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

Zero kinetic energy photoelectron spectroscopy of jet cooled benzo[a]pyrene from resonantly enhanced multiphoton ionization

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

Short Gamma-Ray Bursts from the Merger of Two Black Holes

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