Speaker
Dr
Koji Noda
(ICRR, U. Tokyo)
Description
Detection of very high energy (>100 GeV) gamma rays from Gamma Ray Bursts (GRBs) have been long awaited, in order for us to understand the mechanism of the GeV emissions that are detected by satellites such as Fermi-LAT.
The MAGIC Collaboration made tremendous efforts to discover GRBs which should be shining at the VHE regime.
The light-weight structure of the telescope enables a fast rotation to direct the telescope any point in the sky within 30 seconds. The automatic alert system filters events with a large localization error, those with a small significance, or those with unfavorable conditions such as a large zenith angle.
After all the efforts for 15 years, on 14th January 2019, MAGIC succeeded to detect gamma rays around TeV from GRB 190114C, with a significance over 20 sigma for the first 20 minutes of the observation.
In this contribution we describe the observation and data analysis we have made, and brief theoretical interpretations of the results, such as the emission mechanisms and parameters that can explain the VHE gamma-ray emission.
Primary author
Dr
Koji Noda
(ICRR, U. Tokyo)
Co-authors
Alessio Berti
(INFN)
Davide Miceli
(U. Udine and INFN)
Elena Moretti
(IFAE)
Ievgen Vovk
(MPP)
Lara Nava
(INAF, INFN, and IFPU)
Satoshi Fukami
(ICRR)
Stefano Covino
(INAF)
Susumu Inoue
(RIKEN)
Yusuke Suda
(MPP)
