Global ETD Search

1	The optimisation of discrete pixel code aperture telescopes Jupp, Ian David January 1996 (has links) No description available. 520 Gamma-ray imaging; Gamma-ray astronomy
2	KMESS an open source software package using a semi-empirical mesh-grid method for the modeling of germanium detector efficiencies / Jackman, Kevin Richard. January 1900 (has links) Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references. Gamma ray detectors Gamma ray detectors
3	Observations of Transient Events with Very-High-Energy Gamma-Ray Telescopes Ribeiro, Deivid January 2022 (has links) Astrophysical events that evolve on short timescales (from milliseconds to years) are widely referred as transient events. In many cases, transient events are explosions or mergers of astrophysical objects that emit particles of all energies. This thesis focuses on very-high-energy (VHE; 100 GeV to 100 TeV) gamma rays, observed by the VERITAS telescope, to understand two types of transients, superluminous supernovae (SLSNe) and classical novae. In the first part, the background physics and technical approach of an imaging atmospheric Cherenkov technique deployed by VERITAS is reviewed in depth, including the analysis pipeline of VERITAS data, from camera data reduction to high level analysis output. In addition to supporting the ongoing work at VERITAS, the second part of this thesis describes the extensive effort to develop, commission and align the optical system of the prototype Schwarzschild-Couder telescope, also located at the VERITAS observatory. This new telescope provides an wider field of view and higher angular resolution compared with the conventional IACT design of current telescopes, and will join the next generation of VHE telescopes in the Cherenkov Telescope Array (CTA) project currently in development. The observation and analysis of two SLSNe is performed, on SN 2015bn and SN 2017egm, with both VERITAS and Fermi-LAT telescopes. The upper limit is reported on both events and is compared to a simple and a self-consistent model for parameter estimation. In addition, a population of sources were analyzed to estimate the future detection potential of new SLSNe with several gamma-ray observatories. Finally, the observation and analysis of several novae were performed. These sources were observed with VERITAS and Fermi-LAT. The observation of Nova Herculis 2021 is noteworthy in that the overlap of both observations may constrain the cutoff energy of the nova spectral model, providing a estimate for the maximum energy of the accelerated particles in the nova’s shock region. Astrophysics Gamma ray telescopes Gamma ray astronomy
4	Improving the position resolution of highly segmented HPGe detectors using pulse shape analysis methods Descovich, Martina January 2002 (has links) No description available. 539 Gamma ray tracking
5	Complexes of Group III metal salts and titanium halides with tertiary pnictogen oxide and crown ether ligands Popham, Michael Charles January 2003 (has links) No description available. 546 Gamma ray bursts
6	Mass modelling techniques for gamma ray burst missions Willis, Dave January 2003 (has links) No description available. 523 Gamma ray bursts
7	Silicon photodiodes as photomultiplier replacements and their use in Compton backscattering thickness monitoring Asghar, Muhammad January 1991 (has links) No description available. 539.7 Gamma-ray detector
8	Detection of high energy gamma rays from X-ray selected blazars Calle PeÌrez, Ignacio de la January 2003 (has links) No description available. 523 Gamma ray emission
9	A southern hemisphere search for ultra-high-energy gamma ray sources Ciampa, Dominic. January 1988 (has links) (PDF) Bibliography: leaves 138-153. Gamma ray sources
10	The origin of extragalactic gamma rays / Yu, Kwan-ngok, Peter. January 1988 (has links) Thesis (Ph. D.)--University of Hong Kong, 1988. Gamma ray sources. Galaxies.

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