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Possible re-acceleration regions above the inner gap and pulsar gamma-ray emission

Published online by Cambridge University Press:  12 April 2016

B.H. Hong ,
G.J. Qiao ,
B. Zhang ,
J.L. Han  and
R.X. Xu
B.H. Hong
Affiliation:
Beijing Astrophysical Center, CAS-PKU, Beijing 100871, China Astronomy Department, Peking University, Beijing 100871, China National Astronomical Observatories, CAS, Beijing 100080, China
G.J. Qiao
Affiliation:
Beijing Astrophysical Center, CAS-PKU, Beijing 100871, China Astronomy Department, Peking University, Beijing 100871, China
B. Zhang
Affiliation:
Beijing Astrophysical Center, CAS-PKU, Beijing 100871, China Astronomy Department, Peking University, Beijing 100871, China
J.L. Han
Affiliation:
Beijing Astrophysical Center, CAS-PKU, Beijing 100871, China National Astronomical Observatories, CAS, Beijing 100080, China
R.X. Xu
Affiliation:
Beijing Astrophysical Center, CAS-PKU, Beijing 100871, China Astronomy Department, Peking University, Beijing 100871, China

Abstract

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We propose that the violent breakdown of the Ruderman-Sutherland type vacuum gap above the pulsar polar cap region may produce copious primary particles and make the charge density above the gap in excess of the Goldreich-Julian density. Such an excess residue of charge density may arise some re-acceleration regions above the gap due to the space-charge-limited flow mechanism. Such re-acceleration regions, if exist, may accelerate particles to carry away more spin-down energy, and may have some implications for pulsar γ-ray emission.

Type
Part 6. Emission and Plasma Theory
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 461 - 462
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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