Reconstruction and analysis of highest energy γ-rays and its application to pulsar wind nebulae

Abstract: The High Altitude Water Cherenkov (HAWC) γ-ray observatory detects cosmic- and γ-rays in the TeV energy range. HAWC was recently upgraded with a sparse detector array (the outrigger array), which increases the instrumented area by a factor of 4-5 and will improve the sensitivity at energie...

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Bibliographic Details
Main Author: Joshi, Vikas (Author)
Format: Book/Monograph Thesis
Language:English
Published: Heidelberg 15 Feb. 2019
DOI:10.11588/heidok.00026062
Subjects:
Online Access:Resolving-System, kostenfrei, Volltext: http://dx.doi.org/10.11588/heidok.00026062
Resolving-System, kostenfrei, Volltext: http://nbn-resolving.de/urn:nbn:de:bsz:16-heidok-260626
Resolving-System, Volltext: https://nbn-resolving.org/urn:nbn:de:bsz:16-heidok-260626
Langzeitarchivierung Nationalbibliothek, Volltext: http://d-nb.info/1178427307/34
Verlag, kostenfrei, Volltext: http://www.ub.uni-heidelberg.de/archiv/26062
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Author Notes:put forward by Vikas Joshi M.Sc. (Physics) ; referees: Prof. Dr. Jim Hinton, Prof. Dr. Stefan Wagner

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520 |a Abstract: The High Altitude Water Cherenkov (HAWC) γ-ray observatory detects cosmic- and γ-rays in the TeV energy range. HAWC was recently upgraded with a sparse detector array (the outrigger array), which increases the instrumented area by a factor of 4-5 and will improve the sensitivity at energies greater than 10 TeV. This thesis consists of a number of contributions towards the improvement of the performance of HAWC at the highest energies and the study of a prominent high energy source, 2HWC J2019+367. To decide on components of the outrigger array, simulation input is provided. A new Monte Carlo template-based reconstruction method for air shower arrays is developed. It reconstructs the core location and energy of γ-ray showers. The goodness of fit of the method is utilised to separate the cosmic- and γ-ray showers. This method significantly improves the HAWC shower reconstruction and combines the reconstruction of HAWC and the outrigger array. In-depth spectral and morphological studies of 2HWC J2019+367 are performed. 2HWC J2019+367 shows a hint of energy-dependent morphology. A new HAWC source is discovered in the vicinity associated with VER J2016+371. The preferred direction of the X-ray and TeV emission indicates their association, and their combined spectral modelling show that 2HWC J2019+367 is likely to be the TeV pulsar wind nebula of PSR J2021+3651. 
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