Exceptional Detection of a GRB with MAGIC: TeV gamma-ray emission revealed for the first time

Seminar: Exceptional Detection of a GRB with MAGIC: TeV gamma-ray emission revealed for the first time

Dr. Elena Moretti
P-Sphere Marie Skłodowska-Curie Fellow, Institut de Física d’Altes Energies (IFAE), Barcelona

Friday 22 November 2019,
12:30-14.30, DFA Aula C – via Marzolo 8 – Padova

The hunt for Gamma-Ray-Bursts (GRBs) at very high energy (VHE) started more than 20 years ago. A hint of emission was already claimed by Milagrito water Cherenkov detector from the observations of GRB 970417.
On 19 of January 2019 the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) clearly detected GRB 190114C above 0.2 TeV. This is the first highly significant detection (over 50 s.d. reached in the first few tens of minutes after the
burst) of a GRB at VHE. GRB190114C was also detected by several other instruments providing a wealth of multi-wavelength data across 17 orders of magnitude in energy. The detection of GRB190114C by MAGIC reveals a spectral
component at the highest energies incompatible with being originated by synchrotron emission processes. In this talk we will present the detection of GRB 190114C and the interpretation of its emission resulting from a complete multiwavelength
study.

PROGRAM OF THE EVENT
12.30-13.00 Small buffet and toss!
13.00-13.20 M. Mariotti MAGIC technology for GRBs
13.20-14.00 E. Moretti Highlights of the results
14.00-14.30 Discussion