On the very high energy (>25GeV) pulsed emission in the Crab pulsar

Abstract

We have examined the recently detected very high energy (VHE) pulsed radiation from the Crab pulsar. According to the observational evidence, the observed emission (>25GeV) peaks at the same phase with the optical spectrum. Considering the cyclotron instability, we show that the pitch angle becomes non-vanishing leading to the efficient synchrotron mechanism near the light cylinder surface. The corresponding spectral index of the emission equals -1/2. By studying the inverse Compton scattering and the curvature radiation, it is argued that the aforementioned mechanisms do not contribute to the VHE radiation detected by MAGIC.

11 pages, 1 figure

References in corpus (3)

• VHE Gamma-Ray Observation of the Crab Nebula and its Pulsar with the MAGIC telescope
• High-Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
• Dynamical feedback of the curvature drift instability on its saturation process

Cited by in corpus (8)

• On the very high energy spectrum of the Crab pulsar
• On the simultaneous generation of high energy emission and submillimeter/infrared radiation from active galactic nuclei
• The influence of corotation on the high energy synchrotron emission in Crab-like pulsars
• Synchrotron emission driven by the Cherenkov-drift instability in active galactic nuclei
• The generation of connected high and very high energy $\gamma$-rays and radio emission in active galactic nuclei
• On the mechanism of the pulsed high energy emission from the pulsar PSR B1509-58
• Rotationally-driven VHE emission from the Vela pulsar
• Very high energy emission of Crab-like pulsars driven by the Cherenkov drift radiation