QuanGui Gao1; ZeJun Jiang2; Li Zhang2
Source Publicationchineseastronomyandastrophysics
AbstractWe restudy the possible contribution of mature gamma-ray pulsars to cosmic ray positrons based on the new version of outer gap model. In this model, the inclination angle and average properties of the outer gap are taken into account, and more mature pulsars can have the outer gap and emit high energy photons. Half of the primary particles in the outer gaps will flow back toward the star surface and emit synchrotron photons, which can produce electron/positron pairs by the cascade of pair production. Some of these pairs will escape from the light cylinder and be accelerated to relativistic energies in the pulsar wind driven by low-frequency electromagnetic waves. Using a Monte Carlo method, we obtain a sample of mature gamma-ray pulsars and then calculate the production of the positrons from these pulsars. The observed excess of cosmic positrons can be well explained by this model.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
QuanGui Gao,ZeJun Jiang,Li Zhang. possiblecontributionofmatureraypulsarstocosmicraypositrons[J]. chineseastronomyandastrophysics,2008,8(1):87.
APA QuanGui Gao,ZeJun Jiang,&Li Zhang.(2008).possiblecontributionofmatureraypulsarstocosmicraypositrons.chineseastronomyandastrophysics,8(1),87.
MLA QuanGui Gao,et al."possiblecontributionofmatureraypulsarstocosmicraypositrons".chineseastronomyandastrophysics 8.1(2008):87.
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