PoS - Proceedings of Science
Volume 357 - The New Era of Multi-Messenger Astrophysics (Asterics2019) - Multi-Messenger observations of Gravitational Waves and search for counterparts
MAGIC as a Neutrino Follow-Up Instrument
A. Fattorini, K. Satalecka, E. Bernardini, M. Ribó* on behalf of the MAGIC collaboration
*corresponding author
Full text: pdf
Pre-published on: August 08, 2019
Published on: January 28, 2020
Abstract
Since 2012, the stereoscopic IACT system MAGIC, located on La Palma, Canary Islands, has been involved in neutrino follow-up campaigns. The MAGIC telescopes are sensitive to gamma events with energies between 30 GeV and tens of TeV. In 2017 MAGIC detected for the first time very high energy gamma-ray emission from the blazar TXS 0506+056, spatially and temporally correlated with a high-energy neutrino event observed by IceCube. Every time a potentially astrophysical neutrino is detected by IceCube, an alert with the reconstructed coordinates is published. MAGIC uses its automated alert response system and performs follow-up observations in search of a correlated gamma-ray flux. The reconstructed neutrino direction is given with an uncertainty, typically about 0.2-1 degree. Since the MAGIC angular resolution is much smaller, the analysis needs to be modified to detect sources in a certain sky region. Here we present a method for creating sky maps to identify point sources for the desired sky region, based on a maximum likelihood approach included in the SkyPrism software. Analysis results of the follow-up observation of the neutrino event HESE-160427A performed by MAGIC in April 2016 are shown.
DOI: https://doi.org/10.22323/1.357.0066
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