Theoretical Study of Gamma-ray Pulsars
We use the non-stationary three dimensional two-layer outer gap model to explain gamma-ray emissions from a pulsar magnetosphere. We found out that for some pulsars like the Geminga pulsar, it was hard to explain emissions above a level of around 1 GeV. We then developed the model into a non-stati...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Space Science Society (KSSS)
2016-06-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2016/v33n2/OJOOBS_2016_v33n2_69.pdf |
| Summary: | We use the non-stationary three dimensional two-layer outer gap model to explain gamma-ray emissions from a pulsar
magnetosphere. We found out that for some pulsars like the Geminga pulsar, it was hard to explain emissions above a
level of around 1 GeV. We then developed the model into a non-stationary model. In this model we assigned a power-law
distribution to one or more of the spectral parameters proposed in the previous model and calculated the weighted phaseaveraged
spectrum. Though this model is suitable for some pulsars, it still cannot explain the high energy emission of the
Geminga pulsar. An Inverse-Compton Scattering component between the primary particles and the radio photons in the
outer magnetosphere was introduced into the model, and this component produced a sufficient number of GeV photons in
the spectrum of the Geminga pulsar. |
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| ISSN: | 2093-5587 2093-1409 |