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  Morphology and hardness ratio exploitation under limited statistics

Clapson, A.-C., Dyrda, M., Nekrassov, D., & Renaud, M. (2009). Morphology and hardness ratio exploitation under limited statistics. In Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy (pp. 681-684). Melville: AIP.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-77D2-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-77D3-B
Genre: Conference Paper

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 Creators:
Clapson, André-Claude1, Author              
Dyrda, M.1, Author              
Nekrassov, Daniil1, Author              
Renaud, Matthieu1, Author              
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1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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 Abstract: gamma-ray astronomy has produced for several years now sky maps for low photon statistics, non-negligible background and comparatively poor angular resolution. Quantifying the significance of spatial features remains difficult. Besides, spectrum extraction requires regions with large statistics while maps in energy bands allow only qualitative interpretation. The two main competing mechanisms in the VHE domain are the Inverse-Compton emission from accelerated electrons radiating through synchrotron in the X-ray domain and the interactions between accelerated hadrons and the surrounding medium, leading to the production and subsequent decay of pi0 mesons. The spectrum of the VHE emission from leptons is predicted to steepen with increasing distance from the acceleration zone, owing to synchrotron losses (i.e. cooled population). It would remain approximately constant for hadrons.Ideally, spectro-imaging analysis would have the same spatial scale in the TeV and X-ray domains, to distinguish the local emission mechanisms. More realistically, we investigate here the possibility of improving upon the currently published HESS results by using more sophisticated tools.

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Language(s): eng - English
 Dates: 2009
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 522327
DOI: doi:10.1063/1.3076767
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Title: 4th Heidelberg International Symposium on High-Energy Gamma-Ray Astronomy
Place of Event: Heidelberg, Germany
Start-/End Date: 2008-07-07 - 2008-07-11

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Title: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy
Source Genre: Proceedings
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Publ. Info: Melville : AIP
Pages: XVI, 917 S. : Ill., graph. Darst. Volume / Issue: - Sequence Number: - Start / End Page: 681 - 684 Identifier: -

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Title: AIP Conference Proceedings
Source Genre: Series
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Pages: - Volume / Issue: 1085 Sequence Number: - Start / End Page: - Identifier: -