The two papers published in Nature on 2019 November 21 report the first ever detection of very-high-energy photons from a GRB in the range of 0.2–1 teraelectronvolts from around one minute after the burst. The GRB detected by the MAGIC telescopes reveals the highest energy photons measured from these objects.
This ground-breaking achievement by MAGIC provides critical new insight for understanding the physical processes at work in GRBs, which are still mysterious. The photons detected by MAGIC must originate from a process hitherto unseen in the afterglows of GRBs, clearly distinct from the physical process that is known to be responsible for their emission at lower energies.
MAGIC (Major Atmospheric Gamma Imaging Cherenkov) is a system of two 17 meter diameter telescopes located at the Canary island of La Palma, Spain, and designed to perform gamma-ray astronomy in the energy range from 30 GeV to more than 50 TeV.
The MAGIC telescopes are run by an international collaboration of scientists, engineers and technicians from 12 countries. University of Oulu is represented in the MAGIC collaboration by Dr. Vitaly Neustroev from Astronomy Research Unit. He is one of the co-authors of the Nature articles.
MAGIC telescope on the Canary island La Palma, Spain.
Teraelectronvolt emission from the γ-ray burst GRB 190114C
Observation of inverse Compton emission from a long γ-ray burst
Photo: NASA/Swift/Aurore Simonnet
Last updated: 21.11.2019