EPJ Web Conf.
Volume 136, 2017RICAP16, 6th Roma International Conference on Astroparticle Physics
|Number of page(s)||4|
|Published online||23 March 2017|
The Crab pulsar at VHE
Max-Planck-Institut fur Kernphysik, P.O. Box 103980, D 69029 Heidelberg, Germany
a e-mail: Roberta.Zanin@mpi-hd.mpg.de
Published online: 23 March 2017
The last six years have witnessed major revisions of our knowledge about the Crab Pulsar. The consensus scenario for the origin of the high-energy pulsed emission has been challenged with the discovery of a very-high-energy power law tail extending up to ~400 GeV, above the expected spectral cut off at a few GeV. Now, new measurements obtained by the MAGIC collaboration extend the energy spectrum of the Crab Pulsar even further, on the TeV regime. Above ~400 GeV the pulsed emission comes mainly from the interpulse, which becomes more prominent with energy due to a harder spectral index. These findings require γ -ray production via inverse Compton scattering close to or beyond the light cylinder radius by an underlying particle population with Lorentz factors greater than 5 × 106. We will present those new results and discuss the implications in our current knowledge concerning pulsar environments.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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