Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 79: Gammaastronomie III

T 79.3: Vortrag

Donnerstag, 22. März 2018, 17:05–17:20, Philo-HS7

Variability study of the Crab Pulsar above few tens of GeV with MAGIC — •Giovanni Ceribella for the MAGIC collaboration — Max-Planck-Institut für Physik, München, Deutschland

The Crab Nebula shows flaring activity in the energy range around 100 MeV, but the origin of such large flux variations is still unknown. The flares could originate in the nebula itself or around the pulsar, the central engine of the source. The pulsar is known to be stable at the hundreds of MeV energy domain, but its temporal behaviour at few tens of GeV has never been probed. Due to the very low energy-threshold provided by the new Sum-Trigger-II, MAGIC is an ideal instument to perform a study of the stability of the pulsar, on timescales as short as days. If detected, this variability at VHE will constitute a remarkable new result, which could shed light on the mechanisms of the pulsar emission and pulsar/nebula interactions. We will present the first proof-of-concept results of the project, the plans for the next future, as well as the status of the MAGIC Sum-Trigger-II system.

The MAGIC Telescopes are two Imaging Atmospheric Cherenkov telescopes located on the Canary island of La Palma, at 2200 m a.s.l.. The Sum-Trigger-II is a new system designed to detect the lowest energy air showers, extending the sensitivity of MAGIC down to 30 GeV and even below.