Journal Article

PUBDB-2019-02716

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Towards open and reproducible multi-instrument analysis in gamma-ray astronomy

Nigro, C. (Corresponding author)DESY* ; Deil, C. ; Zanin, R. ; Hassan, T.DESY* ; King, J. ; Ruiz, J. E. ; Saha, L. ; Terrier, R. ; Brügge, K. ; Nöthe, M. ; Bird, R. ; Lin, T. T. Y. ; Aleksić, J. ; Boisson, C. ; Contreras, J. L. ; Donath, A. ; Jouvin, L. ; Kelley-Hoskins, N.DESY* ; Khelifi, B. ; Kosack, K. ; Rico, J. ; Sinha, A.

2019
ESO Les Ulis

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Please use a persistent id in citations: doi:10.1051/0004-6361/201834938  doi:10.3204/PUBDB-2019-02716

Abstract: The analysis and combination of data from different gamma-ray instruments involves the use of collaboration proprietary software and case-by-case methods. The effort of defining a common data format for high-level data, namely event lists and instrument response functions (IRFs), has recently started for very-high-energy gamma-ray instruments, driven by the upcoming Cherenkov Telescope Array (CTA). In this work we implemented this prototypical data format for a small set of MAGIC, VERITAS, FACT, and H.E.S.S. Crab nebula observations, and we analyzed them with the open-source gammapy software package. By combining data from Fermi-LAT, and from four of the currently operating imaging atmospheric Cherenkov telescopes, we produced a joint maximum likelihood fit of the Crab nebula spectrum. Aspects of the statistical errors and the evaluation of systematic uncertainty are also commented upon, along with the release format of spectral measurements. The results presented in this work are obtained using open-access on-line assets that allow for a long-term reproducibility of the results.

Note: (c) ESO

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Contributing Institute(s):

1. Cherenkov Telescope Array (ZEU-CTA)
2. Astroteilchenphysik (ZEU-EXP/AT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF3-613) (POF3-613)

Experiment(s):

1. Cherenkov Telescope Array
2. High Energy Stereoscopic System
3. IceCube South Pole Neutrino Observatory
4. Major Atmospheric Gamma Imaging Cherenkov
5. Very Energetic Radiation Imaging Telescope Array System

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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