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Updated: May 14, 2026
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Ultra high energy electrons powered by pulsar rotation
Swadesh Mahajan1, George Machabeli, Zaza Osmanov
1Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA.
Scientific Reports
|February 14, 2013
Summary
A new particle acceleration mechanism in the Crab pulsar, driven by its rotation, efficiently boosts electrons to TeV and PeV energies. This process may explain the origin of ultra-high-energy cosmic ray electrons.
Area of Science:
- Astrophysics
- Plasma Physics
Background:
- The Crab pulsar's rotational slowdown is a key energy source.
- Understanding particle acceleration in extreme astrophysical environments is crucial.
Purpose of the Study:
- To explore a novel particle acceleration mechanism driven by pulsar rotation.
- To investigate the role of Langmuir waves in accelerating electrons.
Main Methods:
- Theoretical modeling of particle acceleration.
- Analysis of plasma wave excitation and damping.
- Calculations based on Crab pulsar parameters.
Main Results:
- Rotational slowdown excites unstable Langmuir waves in the magnetosphere.
- Landau damping of these waves accelerates electrons to high energies (TeV-PeV).
- Optimal energy transfer occurs when wave and damping times are short relative to rotation.
Conclusions:
- The proposed mechanism efficiently accelerates electrons using pulsar rotation.
- This mechanism offers a potential explanation for ultra-high-energy cosmic ray electrons.
- The findings align with the specific conditions of the Crab pulsar.
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