Speaker
Description
Mid to large size imaging atmospheric Cherenkov telescopes for gamma-ray astrophysics in the very high energy domain have a typical threshold of (20 – 200) GeV. In this energy range sensitive observations of the Crab Nebula reveal the emission from the Crab pulsar at phases P1 and P2. Observations of MAGIC show that the P2/P1 is monotonically increasing function of energy. In tens of GeV energy range sensitivity of MAGIC overlaps with that of the Fermi-LAT mission. Comparison of the P2/P1 ratio from the MAGIC and Fermi-LAT Crab pulsar data provides an alternative method to cross-calibrate the two instruments and minimize the impact of Monte Carlo simulations. Here we explore this possibility for absolute calibration of the operational energy range of IACTs.
Keywords
IACT; calibration; Crab pulsar; pulsar emission phase; IACT-Fermi intercalibration; P1 and P2
Subcategory | Experimental Results |
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