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Journal Article

The Crab pulsar at VHE

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Zanin,  R.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Citation

Zanin, R. (2017). The Crab pulsar at VHE. EPJ Web of Conferences, 136: 03003. doi:10.1051/epjconf/201713603003.


Cite as: https://hdl.handle.net/21.11116/0000-0000-B329-8
Abstract
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 similar 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 similar to 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 gamma-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 x 10(6). We will present those new results and discuss the implications in our current knowledge concerning pulsar environments.