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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - GRI - Gamma Ray Indirect
MAGIC studies of the Crab Pulsar and Nebula spectra for energies above 20 GeV
G. Ceribella,* G. D'Amico, F. Dazzi, Y. Iwamura, M. Lopez, J. R. Garcia, T. Saito, T. Schweizer, J. Sitarek
*corresponding author
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Pre-published on: 2019 July 22
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Abstract
The Crab Nebula is the most studied object in the gamma-ray sky. Yet there are many important unanswered questions on the interrelation between the gamma-ray emission from the Pulsar and the Nebula. We present the results of 112 hours of observations conducted with the MAGIC Telescopes by using the stereoscopic Sum-Trigger-II, a novel trigger system essentially halving the lower energy threshold of the telescopes. In order to process the data, a dedicated analysis aiming for the lowest energies is applied. From these observations, we detect pulsed gamma-ray emission down to 27 GeV, which allows us to perform a detailed spectral study. Due to the sound statistical basis, we perform short-time variability studies of the Pulsar and test possible correlations with the nebular flares detected by Fermi-LAT.
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