# The Crab pulsar at VHE

## TL;DR

Recent observations of the Crab Pulsar reveal a very-high-energy tail extending up to TeV energies, challenging existing models and suggesting gamma-ray production near the light cylinder via inverse Compton scattering.

## Contribution

This paper presents new MAGIC measurements extending the Crab Pulsar spectrum into the TeV regime, providing evidence for inverse Compton processes close to the light cylinder.

## Key findings

- Detection of pulsed emission up to TeV energies
- Dominance of inter-pulse at higher energies
- Implication of ultra-relativistic particles with Lorentz factors > 5×10^6

## 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 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 inter-pulse, 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 times 106. We will present those new results and discuss the implications in our current knowledge concerning pulsar environments.