The Synchrotron Emission Mechanism in the Recently Detected Very High Energy Radiation from the Crab Pulsar

Details The Synchrotron Emission Mechanism in the Recently Detected Very High Energy Radiation from the Crab Pulsar The Synchrotron Emission Mechanism in the Recently Detected Very High Energy Radiation from the Crab Pulsar

2009-01-22

arxiv.org/abs/0901.3470v4

Astrophys.J.700:L114-L117,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 pages, 1 figure

Scientific paper

10.1088/0004-637X/700/2/L114

Interpretation of the recently discovered very high energy (VHE) pulsed emission from the Crab pulsar is presented. By taking into account the fact that Crab pulsar's radiation for the optical and VHE spectrum peak at the same phases, we argue that the source of this broad band emission is spatially localized. It is shown that the only mechanism providing the results of the MAGIC Cherenkov telescope, should be the synchrotron radiation. We find that in the magnetospheric electron-positron plasma, due to the cyclotron instability, the pitch angle becomes non-vanishing, which leads to the efficient synchrotron mechanism, intensifying on the light cylinder lengthscales. We also estimate the VHE radiation spectral index to be equal to -1/2.

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