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One-Dimensional Electric Field Structure of an Outer Gap Accelerator |
| CHEN Shi-Bo1;ZHANG Li1,2 |
| 1Department of Physics, Yunnan University, Kunming 650031
2National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011 |
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| Cite this article: |
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CHEN Shi-Bo, ZHANG Li 2006 Chin. Phys. Lett. 23 2881-2884 |
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Abstract We re-study the one-dimensional electric field structure of an outer gap accelerator by considering the physical limit of trans-field height. Inside the outer gap, the charge depletion creates a large electric
field along the magnetic field lines. Electrons and/or positrons are accelerated to ultra-relativistic energies by this longitudinal electric field, and then radiate γ-ray photons by curvature radiation. The collision of these γ-rays and ambient x-ray photons further produce radiating particles, resulting in a stationary gap. We solve the structure of this longitudinal electric field together with the distributions of electrons and positrons and γ-ray photons for an aligned rotator. Our results indicate that the outer gap can extend to the light cylinder using reasonable parameters.
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| Keywords:
97.60.Gb
95.30.Gv
95.30.Qd
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Published: 01 October 2006
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