July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Tera-electron-Volt pulsed emission from the Crab detected by MAGIC

Jul 31, 2015, 2:30 PM
15m
Mississippi (World Forum)

Mississippi

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution GA-EX Parallel GA07 MAGIC

Speaker

Emma de Ona Wilhelmi (CSIC-IEEC)

Description

The last six years have witnessed major revisions of our knowledge about the Crab Pulsar, the central engine of the remnant of the supernova explosion that occurred in 1054 AD. The pulsed high-energy emission is believed to be due to synchrotron-curvature radiation in the pulsar magnetosphere, reaching a maximum energy of a few hundreds of GeV. However, new measurements obtained with the MAGIC telescopes have challenged the current plausible scenarios with the discovery of pulsed gamma-ray emission extending to the TeV regime. The pulse profile derived is consistent with those at lower energies, although a careful spectroscopic investigation of the peaks observed shows clear different spectral behaviour of those. This new spectral component requires gamma-ray production via inverse Compton radiation close to or beyond the light cylinder radius by an underlying particle population with Lorentz factors greater than 5 x 10^6. We will present the new results and discuss the strong implications in the acceleration and radiation of particles in the surrounding of the Crab pulsar.
Collaboration MAGIC
Registration number following "ICRC2015-I/" 352

Primary author

Co-authors

Mr Daniel Galindo (UB) Mr Daniel Garrido-Terrats (UAB) David Fidalgo Dr Diego Torres (IEEC-CSIC) Markus Gaug (Universitat Autònoma de Barcelona) Roberta Zanin (Universitat de Barcelona) Dr Takayuki Saito (Kyoto University) Dr Thomas Schweizer (Max Planck Institute for Physics) Wlodek Bednarek (University of Lodz) Mr Wojciech Idec (Max Planck Institute for Physics) marcos lopez (University Complutense of Madrid)

Presentation materials

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