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Statistical correlation studies of astrophysical objects with H.E.S.S. data


Wenig,  Isabelle Karina
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Wenig, I. K. (2008). Statistical correlation studies of astrophysical objects with H.E.S.S. data. Diploma Thesis, Ruprecht-Karls Universität, Heidelberg.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7AC9-9
Recent advances in the instrumentation to observe very high energy (VHE) gamma rays have made the discovery of many new sources possible, most of them being discovered in the Galactic plane survey of H.E.S.S., an array of imaging atmospheric Cherenkov telescopes in Namibia. Of these sources, a significant number can be identified as pulsar wind nebulae, but supernova remnants and high mass X-ray binaries were also detected. However, a large fraction of the sources remains with no clear counterpart. In this work a study is presented searching for statistical correlations between different types of astrophysical objects and all the H.E.S.S. sources in the Galactic plane, rather than looking for counterparts for individual sources. The results of this work show that HII regions, OB stars and Galactic bubbles do not correlate significantly with VHEgamma -ray sources, while the expected correlations with supernova remnants and high mass X-ray binaries are limited due to the low statistics. Pulsar wind nebulae, regions of star formation and star forming complexes seem to correlate with VHE gamma-ray sources.