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• W4386269323 abstract "In this article, we present Gammapy, an open-source Python package for the analysis of astronomical $gamma$-ray data, and illustrate the functionalities of its first long-term-support release, version 1.0. Built on the modern Python scientific ecosystem, Gammapy provides a uniform platform for reducing and modeling data from different $gamma$-ray instruments for many analysis scenarios. Gammapy complies with several well-established data conventions in high-energy astrophysics, providing serialized data products that are interoperable with other software packages. Starting from event lists and instrument response functions, Gammapy provides functionalities to reduce these data by binning them in energy and sky coordinates. Several techniques for background estimation are implemented in the package to handle the residual hadronic background affecting $gamma$-ray instruments. After the data are binned, the flux and morphology of one or more $gamma$-ray sources can be estimated using Poisson maximum likelihood fitting and assuming a variety of spectral, temporal, and spatial models. Estimation of flux points, likelihood profiles, and light curves is also supported. After describing the structure of the package, we show, using publicly available $gamma$-ray data, the capabilities of Gammapy in multiple traditional and novel $gamma$-ray analysis scenarios, such as spectral and spectro-morphological modeling and estimations of a spectral energy distribution and a light curve. Its flexibility and power are displayed in a final multi-instrument example, where datasets from different instruments, at different stages of data reduction, are simultaneously fitted with an astrophysical flux model." @default.
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• W4386269323 date "2023-08-25" @default.
• W4386269323 modified "2023-10-16" @default.
• W4386269323 title "Gammapy: A Python package for gamma-ray astronomy" @default.
• W4386269323 doi "https://doi.org/10.1051/0004-6361/202346488" @default.
• W4386269323 hasPublicationYear "2023" @default.
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