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Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 58: Gamma astronomy I

T 58.3: Talk

Wednesday, March 17, 2021, 16:35–16:50, Th

Analyses of Neutrino Follow-Up Observations of IC171106 and IC190922 with MAGIC — •Hendrik Bökenkamp for the MAGIC collaboration — TU Dortmund, Experimentelle Physik Vb, Deutschland

One of the long-standing questions in astroparticle physics is the origin of the measured cosmic neutrino flux. In order to understand physical processes of neutrino sources, it is crucial to find correlations to other cosmic messengers like gamma-rays. In the framework of multi-messenger programs, the MAGIC telescopes are doing the follow-up of neutrino alerts by IceCube. The two Cherenkov telescopes are measuring very high energy (VHE) gamma-rays in the range between 20 GeV and 100 TeV and are located in the Canary Island of La Palma.

In 2017 it was the very first time that VHE gamma-rays were observed by MAGIC coincidently with a neutrino from IceCube. Both, the gamma-rays and the neutrino could be assigned to the the blazar TXS 0506+056.

Two of the follow-up observations with MAGIC in recent years are presented here. MAGIC data from the neutrino alerts IC190922 and IC171106A are analyzed to extract source information by using the MAGIC analysis software MARS. With this procedure the significance of these sources is presented.

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