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Articles 61 - 88 of 88

Full-Text Articles in Astrophysics and Astronomy

High Power And Optomechanics In Advanced Ligo Detectors, Terra Christine Hardwick Nov 2019

High Power And Optomechanics In Advanced Ligo Detectors, Terra Christine Hardwick

LSU Doctoral Dissertations

In September 2015, a new era of astronomy began with the first direct detection of grav- itational waves from a binary black hole coalescence. The event was captured by the Laser Interferometer Gravitational-wave Observatory, comprised of two long-baseline interferometers, one in Livingston, LA and one in Hanford, WA. At the time of the first detection, the interferometers were part way through an upgrade to an advanced configuration and were operating with a strain sensitivity of just better than 10−23/Hz1/2 around 100Hz. The full Advanced LIGO design calls for sensitivity of a few parts in 10−24/Hz …


Alpha Capture Reaction Rates For Nucleosynthesis Within An Ab Initio Framework, Alison Constance Dreyfuss Nov 2019

Alpha Capture Reaction Rates For Nucleosynthesis Within An Ab Initio Framework, Alison Constance Dreyfuss

LSU Doctoral Dissertations

Clustering in nuclear systems has broad impacts on all phases of stellar burning, and plays a significant role in our understanding of nucleosynthesis, or how and where nuclei are produced in the universe. The role of alpha particles in particular is extremely important for nuclear astrophysics: 4He was one of the earliest elements produced in the Big Bang, it is one of the most abundant elements in the universe, and helium burning -- in particular, the triple-alpha process -- is one of the most important ``engines'' in stars. To better understand nucleosynthesis and stellar burning, then, it is important …


Exploring Planetary Surfaces With Remote Sensing, Donald R. Hood Nov 2019

Exploring Planetary Surfaces With Remote Sensing, Donald R. Hood

LSU Doctoral Dissertations

Aside from Earth, Mars is the most well-explored planetary body in our solar system. Much has been learned about its geologic past including a history of volcanism, ice ages, and potentially long-lasting liquid water. Much of this knowledge of Mars comes from remote observations of the surface and atmosphere from Mars-orbiting satellites. Such remote observations remain the only way to examine the entirety of Mars’ surface as rovers and landers can only examine small areas. The chapters of this work cover three projects that explore the surface of Mars through a variety of remote sensing methods.

In chapter 1, Gamma-ray …


Long-Term Dust Formation By Core Collapse Supernovae, Kelsie Marie Krafton May 2019

Long-Term Dust Formation By Core Collapse Supernovae, Kelsie Marie Krafton

LSU Doctoral Dissertations

Studying long-term dust formation by CCSNe is an important step toward understanding the large dust masses found in early galaxies. The amazing new discovery of approximately a solar mass of cold dust in the ejecta of SN 1987A has caused a complete re-evaluation of dust formation in core collapse supernovae (CCSNe). CCSNe form only a small amount of dust after three years, but SN 1987A has a dust mass that is several orders of magnitude larger after 25 years. A recent study of SN 2010jl by Gall et al. (2014) made the fascinating suggestion that dust is continuously forming in …


Accuracy Of Personalized 3-D Printed Phantoms For Radiotherapy Applications, Margaret Carey Apr 2019

Accuracy Of Personalized 3-D Printed Phantoms For Radiotherapy Applications, Margaret Carey

Honors Capstones

No abstract provided.


Observation Of High-Energy Gamma-Rays With The Calorimetric Electron Telescope (Calet) On-Board The International Space Station, Nicholas Wade Cannady Oct 2018

Observation Of High-Energy Gamma-Rays With The Calorimetric Electron Telescope (Calet) On-Board The International Space Station, Nicholas Wade Cannady

LSU Doctoral Dissertations

The CALorimetric Electron Telescope (CALET) is a multi-instrument high-energy astrophysics observatory deployed to the International Space Station (ISS) in August 2015. The primary instrument is the calorimeter (CAL), which is intended for measurement of the cosmic ray electron flux in the energy range 10 GeV - 20 TeV. The CAL is also sensitive to gamma-rays in the energy range 1 GeV - 10 TeV and protons and nuclei up to PeV energies. Also present on the CALET payload are an Advanced Stellar Compass (ASC) for the fine determination of the pointing direction and the CALET Gamma-ray Burst Monitor (CGBM) for …


Broadband Measurement And Reduction Of Quantum Radiation Pressure Noise In The Audio Band, Jonathan Daniel Cripe Jun 2018

Broadband Measurement And Reduction Of Quantum Radiation Pressure Noise In The Audio Band, Jonathan Daniel Cripe

LSU Doctoral Dissertations

One hundred years after Albert Einstein predicted the existence of gravitational waves in his general theory of relativity, the Laser Interferometer Gravitational-Wave Observatory (LIGO) made the first direct detection of gravitational waves. Since the first detection of gravitational waves from a binary black hole merger, LIGO has gone on to detect gravitational waves from multiple binary black hole mergers, and more recently from a binary neutron star merger in collaboration with telescopes around the world. The detection of gravitational waves has opened a new window to the universe and has launched the era of gravitational wave astronomy.

With the first …


Single And Multiparameter Estimation Using Multimode Interferometry And Single Photons, Margarite L. Laborde May 2018

Single And Multiparameter Estimation Using Multimode Interferometry And Single Photons, Margarite L. Laborde

Honors Capstones

No abstract provided.


Geometric Design, John Marceaux Apr 2018

Geometric Design, John Marceaux

Honors Capstones

No abstract provided.


Radiomic Feature Analysis And Classification Of Tumors For Serial Pre-Clinical Spect/Ct Data, Megan Chesal Apr 2018

Radiomic Feature Analysis And Classification Of Tumors For Serial Pre-Clinical Spect/Ct Data, Megan Chesal

Honors Capstones

No abstract provided.


Spatiotemporal Properties Of Solid State Harmonics, Christopher Abadie Apr 2018

Spatiotemporal Properties Of Solid State Harmonics, Christopher Abadie

Honors Capstones

No abstract provided.


Some Results From The Lariat Experiment, Derek Walker Apr 2018

Some Results From The Lariat Experiment, Derek Walker

Honors Capstones

No abstract provided.


Epoch, Latitude And Star Positions From Hipparchus’ Commentary, Irene Vargas-Salazar May 2017

Epoch, Latitude And Star Positions From Hipparchus’ Commentary, Irene Vargas-Salazar

Honors Capstones

No abstract provided.


Optimized Multilayered Thermal Emitters For Photovoltaic, Lighting, And Countermeasure Technologies, Simón G. Lorenzo Apr 2017

Optimized Multilayered Thermal Emitters For Photovoltaic, Lighting, And Countermeasure Technologies, Simón G. Lorenzo

Honors Capstones

No abstract provided.


A Monte Carlo Study Of The Pion Absorption And Charge Exchange Cross Section In Lariat, Andrew Olivier Apr 2016

A Monte Carlo Study Of The Pion Absorption And Charge Exchange Cross Section In Lariat, Andrew Olivier

Honors Capstones

No abstract provided.


Formation And Characterization Of Environmentally Persistent Free Radicals O N Single Crystal A N D Nanoparticle Metal Oxide Surfaces, Mark F. Ditusa Apr 2016

Formation And Characterization Of Environmentally Persistent Free Radicals O N Single Crystal A N D Nanoparticle Metal Oxide Surfaces, Mark F. Ditusa

Honors Capstones

No abstract provided.


Geometrical Phases On The Poincaré And Bloch Spheres, Jason D. Mueller Apr 2015

Geometrical Phases On The Poincaré And Bloch Spheres, Jason D. Mueller

Honors Capstones

No abstract provided.


An Ion Detector For The Array For Nuclear Astrophysics And Structure With Exotic Nuclei (Anasen), Cedric Williams, K Macon, C M. Deibel, J C. Blackmon Jan 2015

An Ion Detector For The Array For Nuclear Astrophysics And Structure With Exotic Nuclei (Anasen), Cedric Williams, K Macon, C M. Deibel, J C. Blackmon

Honors Capstones

No abstract provided.


Adaptation Of Gamma Camera System For Small Field-Of-View Applications, Melanie Carroll May 2014

Adaptation Of Gamma Camera System For Small Field-Of-View Applications, Melanie Carroll

Honors Capstones

No abstract provided.


Application Of The No-Core Symplectic Shell Model To Beryllium And Carbon Isotopes, Mia Cherise Ferriss Apr 2013

Application Of The No-Core Symplectic Shell Model To Beryllium And Carbon Isotopes, Mia Cherise Ferriss

Honors Capstones

No abstract provided.


A Study Of Pixelated Cdznte Detector Setups For Future 0Νββ Decay Searches, Alexander Leder Apr 2012

A Study Of Pixelated Cdznte Detector Setups For Future 0Νββ Decay Searches, Alexander Leder

Honors Capstones

No abstract provided.


Phase Estimation With Two-Mode Squeezed Vacuum And Parity Detection: Bayesian Analysis, Keith Motes Jan 2012

Phase Estimation With Two-Mode Squeezed Vacuum And Parity Detection: Bayesian Analysis, Keith Motes

Honors Capstones

No abstract provided.


Bachelor’S Thesis In Physics: A Chernoff Analysis Of An Invisible Quantum Tripwire With Photon Loss, Daniel Lum Apr 2011

Bachelor’S Thesis In Physics: A Chernoff Analysis Of An Invisible Quantum Tripwire With Photon Loss, Daniel Lum

Honors Capstones

No abstract provided.


Semi-Classical Approaches To Below Threshold Harmonics, James A. Hostetter May 2010

Semi-Classical Approaches To Below Threshold Harmonics, James A. Hostetter

Honors Capstones

No abstract provided.


Co-Evolution Of Super Massive Black Holes And Their Surrounding Galactic Bulges, Joseph Chatelain Apr 2009

Co-Evolution Of Super Massive Black Holes And Their Surrounding Galactic Bulges, Joseph Chatelain

Honors Capstones

No abstract provided.


Tokai To Kamioka: A 2nd Generation Long Baseline Neutrino Experiment, Jessica Danielle Brinson Jan 2009

Tokai To Kamioka: A 2nd Generation Long Baseline Neutrino Experiment, Jessica Danielle Brinson

Honors Capstones

No abstract provided.


Pressure Dependence Of The Metal-Insulator Transition In Fesi1-Xa1x, Brian Perone Apr 1999

Pressure Dependence Of The Metal-Insulator Transition In Fesi1-Xa1x, Brian Perone

Honors Capstones

No abstract provided.


The Two-Dimensional Ising Model: Mean-Field And Monte Carlo Results For Equilibrium And Nonequilibrium Transitions, Kevin Scott Brown May 1998

The Two-Dimensional Ising Model: Mean-Field And Monte Carlo Results For Equilibrium And Nonequilibrium Transitions, Kevin Scott Brown

Honors Capstones

No abstract provided.