Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 87: Gamma-Astronomie II
T 87.3: Vortrag
Donnerstag, 28. März 2019, 16:35–16:50, S14
Developing stacked-analysis methods for γ-ray search in air shower arrays — •Victoria Tokareva1, Andreas Haungs1, and Dmitriy Kostunin2 — 1Institut für Kernphysik, Karlsruher Institut für Technologie, DE-76021 Karlsruhe, Germany — 2Deutsches Elektronensynchrotron, D-15738 Zeuthen, Germany
In cosmic ray studies, detection of neutral particles like gammas and neutrinos is especially important since they are not deflected by galactic magnetic fields and thus allow to identify the direction to their sources. At the moment, the search for gamma rays at ultra-high energy (1014–1018 eV) is of high interest to identify the PeVatrons.
Satellite experiments allow observation of gamma-rays with energies up to hundreds GeV, while higher energies can only be accessed with ground-based setups. Recently, HAWC announced the registration of several sources with an energy of more than 56 TeV. The Carpet-2 experiment performed a stacked analysis of IceCube neutrino events.
One of the recent KASCADE results in gamma-ray studies is putting a limit on the flow of diffuse gammas which is currently the best limit in its energy range. The programme of gamma-ray investigations is continued where we are developing methods for stacked-analysis using the KASCADE-Grande archival data as well as data from other experiments like Tunka-133. The talk presents the current status of this work.