Limits on the Diffuse Gamma-Ray Background with HAWC


Abstract:

The high-energy Diffuse Gamma-Ray Background (DGRB) is expected to be produced by unresolved extra-galactic objects such as active galactic nuclei, starburst galaxies and gamma-ray bursts. At TeV energies, observations or stringent limits on the DGRB could have significant multi-messenger implications, such as constraining the origin of TeV-PeV astrophysical neutrinos detected by IceCube. With its continuous sensitivity to gamma rays from a few hundred GeV to several hundred TeV and its wide field-of-view, the High Altitude Water Cherenkov (HAWC) observatory is well-suited to significantly improve searches for the DGRB. In this work, strict cuts have been applied to the HAWC dataset to better isolate gamma-ray air showers from background hadronic showers. The sensitivity to the DGRB was then verified using 535 days of Crab data and Monte Carlo simulations, leading to new limits on the DGRB >10 TeV.

Año de publicación:

2022

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Conference Object

    Estado:

    Acceso restringido

    Áreas de conocimiento:

      Áreas temáticas de Dewey:

      • Cuerpos y fenómenos celestes específicos
      Procesado con IAProcesado con IA

      Objetivos de Desarrollo Sostenible:

      • ODS 9: Industria, innovación e infraestructura
      • ODS 13: Acción por el clima
      • ODS 17: Alianzas para lograr los objetivos
      Procesado con IAProcesado con IA