MAGIC observation of GRB090102

astro-ph.HE

/ Authors

Markus Gaug, Stefano Covino, Markus Garczarczyk, Angelo Antonelli, Denis Bastieri, Antonio La Barbera, Josefa Becerra-Gonzalez, Alessandro Carosi, Nicola Galante, Francesco Longo

and 2 more authors

Valeria Scapin, Susanna Spiro

/ Abstract

On January 2, the MAGIC-I Telescope observed GRB090102 (z=1.55) under particularly good observation conditions. Using the recently upgraded MAGIC-1 sum trigger system, upper limits down to below 50 GeV have been obtained. This is the first time that the new trigger system was fully exploited for a Gamma-ray Burst (GRB) observation and shows the capabilities of the MAGIC observatory for future follow-up observations.