Browsing University of Galway Theses by Author "Shearer, Andrew"
Now showing items 1-8 of 8
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Development and Implementation of an Ultra High Speed Astronomical Polarimeter: The Galway Astronomical Stokes Polarimeter (GASP)
Collins, Patrick P. (2013-05-12)Optical polarization is a powerful diagnostic tool in astrophysics, allowing the investigation of asymmetries in source regions of astronomical objects, magnetic field configurations, and magnetic field strengths. Polarized ... -
Development of a high time resolution optical polarimeter for astronomy
O'Connor, Eoin (NUI Galway, 2018-12-17)This work started in September, 2014 and initially started as an investigation of the characterisation issues associated with using Electron Multiplying Charge- Coupled Devices (EMCCDs) in a two beam polarimeter. It was ... -
IMPAIR: Massively parallel regularised Richardson-Lucy deconvolution on heterogeneous hardware
Sherry, Michael (2017-10-27)This thesis investigates the comparative performance of multicore CPU and general purpose GPU on a commodity desktop computer. To investigate this, an image deconvolution software package (IMPAIR) was updated from its ... -
Multi-wavelength and Polarisation Studies of Pulsars: the Crab, Vela, and PSR J0205+6449
Moran, Paul (2014-12-11)This thesis outlines the findings of a multi-wavelength and polarimetric study of a number of rotation-powered pulsars. Polarisation studies of pulsars are just one example of obtaining insight into the geometry of their ... -
Multi-wavelength and polarisation studies of pulsars: the crab, vela, and PSR J0205+6449
Moran, Paul (2014-12-11)This thesis outlines the findings of a multi-wavelength and polarimetric study of a number of rotation-powered pulsars. Polarisation studies of pulsars are just one example of obtaining insight into the geometry of their ... -
The optical development and calibration of the Galway Astronomical Stokes Polarimeter (GASP) as a multi-detector system for the polarimetric observations of variable optical sources
Kyne, Gillian (2014-06-03)Polarised light from astronomical targets can yield a wealth of information about their source radiation mechanisms, and about the geometry of the scattered light regions. To date, stellar observations have focused, for ... -
Polarisation of synchrotron radiation from isolated neutron stars
de Burca, Diarmaid (2016-03-10)Pulsars are enigmatic neutron stars which have defied efforts to understand them for over 40 years. POREC (Pulsar Optical Reverse Engineering Code) was first written to constrain pulsar emission theories through constraining ... -
Semi-automated segmentation of pleural effusions in 3D thoracic X-ray computed tomography
Donohue, Rory James (2014-09-27)A pleural effusion is excess fluid that collects in the pleural cavity, the fluid-filled space that surrounds the lungs. Surplus amounts of such fluid can impair breathing by limiting the expansion of the lungs during ...