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Now showing items 31-40 of 83
A study of turbulence and infall over multiple scales of star formation
(2014-09-28)
The understanding of the processes of star formation informs the understanding and investigation of questions of galactic dynamics and the formation of stellar systems of exoplanets and so sits between the galactic and ...
A fibre based quad-cell wavefront sensor for high speed adaptive optics
(2014-05-20)
The genesis of this thesis came out of the difficulties encountered when trying to
apply adaptive optics correction to optical fields that contain scintillation (specklelike
amplitude fluctuations). These scintillated ...
Observations of turbulent dynamics in the ocean surface boundary layer
(2014-03-26)
Turbulence and mixing processes are investigated in the ocean surface boundary layer (OSBL) using microstructure measurements from the Air-Sea Interaction Profiler (ASIP) a vertically rising, autonomous instrument equipped ...
Wavelength dependence of femtosecond laser ablation of thin gold films
(2014-05-26)
The demand for efficient laser processing of materials is as strong as ever and this requires a deep understanding of the fundamental laser-material interactions. There has been a recent upsurge in the number of studies ...
OpenFOAM computational fluid dynamics studies on the ocean-atmosphere
(2015-09-05)
Computational fluid dynamics (CFD) is the use of applied mathematics, physics, and computational software to visualize how a fluid flows around objects. CFD is based on the Navier-Stokes equations, which describe how the ...
Image super-resolution for consumer thermal cameras
(NUI Galway, 2019-01-21)
This thesis attempts to solve a problem currently faced by consumer-grade thermal cameras. Consumers have grown accustomed to the high pixel counts and high resolution offered by the modern smartphone, while the performance ...
Multi-wavelength and Polarisation Studies of Pulsars: the Crab, Vela, and PSR J0205+6449
(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 ...
Development and Implementation of an Ultra High Speed Astronomical Polarimeter: The Galway Astronomical Stokes Polarimeter (GASP)
(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 ...
High Precision Proper Motions in Globular Star Clusters using Parallel Deconvolution of Hubble Space Telescope Images
(2013-05-24)
It has been suggested that globular star clusters may host a black hole with intermediate mass (~ a few × 1000 M_sun ) or a collection of low mass (~ 10 M_sun ) black holes at their centre. High velocity dispersion in the ...
Shaping the focal field in three dimensions using polarisation and phase
(2013-05-27)
Vectorial polarimetry is a novel high-resolution microscopy technique with potential applications in the characterisation of nano-materials, sub-diffraction limit microscopy, and single molecule imaging. Previous work had ...