Searching for as yet undetected γ-ray sources is a major target of the Fermi LAT Collaboration. In this paper, we explore the capability of a filtering method based on robust mixtures of von Mises–Fisher distributions with the additional inclusion of concomitant variables. The proposed procedure is illustrated on data drawn from a Fermi LAT catalogue of detected sources.
Locating gamma-ray sources on the celestial sphere via mixture models.
Alessandra Rosalba Brazzale;Giovanna Menardi
2022
Abstract
Searching for as yet undetected γ-ray sources is a major target of the Fermi LAT Collaboration. In this paper, we explore the capability of a filtering method based on robust mixtures of von Mises–Fisher distributions with the additional inclusion of concomitant variables. The proposed procedure is illustrated on data drawn from a Fermi LAT catalogue of detected sources.
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