Application of a generalized likelihood ratio test statistic to MAGIC data.
In: AIP Conference Proceedings; Dec2012, Vol. 1505 Issue 1, p713-716, 4p, 2 Graphs; Jg. 1505 (2012-12-05) 1, S. 713-716
Konferenz
Zugriff:
The commonly used detection test statistic for Cherenkov telescope data is Li & Ma (1983), Eq. 17. It evaluates the compatibility of event counts in an on-source region with those in a representative off-region. It does not exploit the typically known gamma-ray point spread function (PSF) of a system, and in practice its application requires either assumptions on the symmetry of the acceptance across the field of view, or Monte Carlo simulations. MAGIC has an azimuth-dependent, asymmetric acceptance which required a careful review of detection statistics. Besides an adapted Li & Ma based technique, the recently presented generalized LRT statistic of [1] is now in use. It is more flexible, more sensitive and less systematics-affected, because it is highly customized for multi-pointing Cherenkov telescope data with a known PSF. We present the application of this new method to archival MAGIC data and compare it to the other, Li&Ma-based method. [ABSTRACT FROM AUTHOR]
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Titel: |
Application of a generalized likelihood ratio test statistic to MAGIC data.
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Autor/in / Beteiligte Person: | Klepser, S. ; Krause, J. ; Sitarek, J. ; Collaboration, MAGIC |
Quelle: | AIP Conference Proceedings; Dec2012, Vol. 1505 Issue 1, p713-716, 4p, 2 Graphs; Jg. 1505 (2012-12-05) 1, S. 713-716 |
Veröffentlichung: | 2012 |
Medientyp: | Konferenz |
ISSN: | 0094-243X (print) |
DOI: | 10.1063/1.4772359 |
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