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Classification of Fermi-LAT sources with deep learning

International Cosmic Ray Conference, pp. 664

Abstract

Machine learning techniques are powerful tools for the classification of unidentified gamma-ray sources. We present a new approach based on dense and recurrent deep neural networks to classify unidentified or unassociated gamma-ray sources in the last release of the Fermi-LAT catalog (4FGL-DR2). Our method uses the actual measurements of the photon energy spectrum and time series as input for the classification, instead of specific, hand-crafted features. We focus on different classification tasks: the separation between extragalactic sources, i.e. Active Galactic Nuclei (AGN), and Galactic pulsars, the further classification of pulsars into young and millisecond pulsars and the sub-classification of AGN into different types. Since our method is very flexible, we generalise it to account for uncertainties in the predicted classes. Our list of high-confidence candidate sources labelled by the neural networks provides targets for further multiwavelength observations to identify their nature, as well as for population studies, and is available at \url{https://github.com/manconi/agn-psr-nn-classification}

Authors 5

  1. Heidelberg University · RWTH Aachen University

    Affiliation as printed

    Institut für Theoretische Physik , Heidelberg University , Germany

    Institut für Theoretische Physik, Heidelberg University, Germany

    Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany

  2. Heidelberg University · RWTH Aachen University

    Affiliation as printed

    Institut für Theoretische Physik , Heidelberg University , Germany

    Institut für Theoretische Physik, Heidelberg University, Germany

    Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany

  3. Heidelberg University · RWTH Aachen University

    Affiliation as printed

    Institut für Theoretische Teilchenphysik und Kosmologie , RWTH Aachen University , Germany

    Institut für Theoretische Physik, Heidelberg University, Germany

    Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany

  4. Heidelberg University · RWTH Aachen University

    Affiliation as printed

    Institut für Theoretische Teilchenphysik und Kosmologie , RWTH Aachen University , Germany

    Institut für Theoretische Physik, Heidelberg University, Germany

    Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany

  5. Heidelberg University · RWTH Aachen University

    Affiliation as printed

    Institut für Theoretische Teilchenphysik und Kosmologie , RWTH Aachen University , Germany

    Institut für Theoretische Physik, Heidelberg University, Germany

    Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University, Germany

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