A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar
We use a modified outer gap model to study the multi-frequency phaseresolved spectra of the Crab pulsar. The emissions from both poles contribute to the light curve and the phase-resolved spectra. Using the synchrotron self-Compton mechanism and by considering the incomplete conversion of curvature...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.316.1062 2023-05-15T17:39:55+02:00 A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar Anisia P. S. Tang J. Takata J. J. Jia K. S. Cheng The Pennsylvania State University CiteSeerX Archives 711 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.1062 http://arxiv.org/pdf/0711.2719v1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.1062 http://arxiv.org/pdf/0711.2719v1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://arxiv.org/pdf/0711.2719v1.pdf text ftciteseerx 2016-09-04T00:07:04Z We use a modified outer gap model to study the multi-frequency phaseresolved spectra of the Crab pulsar. The emissions from both poles contribute to the light curve and the phase-resolved spectra. Using the synchrotron self-Compton mechanism and by considering the incomplete conversion of curvature photons into secondary pairs, the observed phase-averaged spectrum from 100 eV- 10 GeV can be explained very well. The predicted phase-resolved spectra can match the observed data reasonably well, too. We find that the emission from the north pole mainly contributes to Leading Wing 1. The emissions in the remaining phases are mainly dominated by the south pole. The widening of the azimuthal extension of the outer gap explains Trailing Wing 2. The complicated phase-resolved spectra for the phases between the two peaks, namely Trailing Wing 1, Bridge and Leading Wing 2, strongly suggest that there are at least two well-separated emission regions with multiple emission mechanisms, i.e. synchrotron radiation, inverse Compton scattering and curvature radiation. Our best fit results indicate that there may exist some asymmetry between the south and the north poles. Our model predictions can be examined by GLAST. – 2 – Subject headings: radiation mechanisms: non-thermal – stars: neutron – pulsars: Text North Pole South pole Unknown North Pole South Pole |
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We use a modified outer gap model to study the multi-frequency phaseresolved spectra of the Crab pulsar. The emissions from both poles contribute to the light curve and the phase-resolved spectra. Using the synchrotron self-Compton mechanism and by considering the incomplete conversion of curvature photons into secondary pairs, the observed phase-averaged spectrum from 100 eV- 10 GeV can be explained very well. The predicted phase-resolved spectra can match the observed data reasonably well, too. We find that the emission from the north pole mainly contributes to Leading Wing 1. The emissions in the remaining phases are mainly dominated by the south pole. The widening of the azimuthal extension of the outer gap explains Trailing Wing 2. The complicated phase-resolved spectra for the phases between the two peaks, namely Trailing Wing 1, Bridge and Leading Wing 2, strongly suggest that there are at least two well-separated emission regions with multiple emission mechanisms, i.e. synchrotron radiation, inverse Compton scattering and curvature radiation. Our best fit results indicate that there may exist some asymmetry between the south and the north poles. Our model predictions can be examined by GLAST. – 2 – Subject headings: radiation mechanisms: non-thermal – stars: neutron – pulsars: |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Anisia P. S. Tang J. Takata J. J. Jia K. S. Cheng |
spellingShingle |
Anisia P. S. Tang J. Takata J. J. Jia K. S. Cheng A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
author_facet |
Anisia P. S. Tang J. Takata J. J. Jia K. S. Cheng |
author_sort |
Anisia P. S. Tang |
title |
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
title_short |
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
title_full |
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
title_fullStr |
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
title_full_unstemmed |
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar |
title_sort |
re-visit of the phase-resolved x-ray and γ-ray spectra of the crab pulsar |
publishDate |
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url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.1062 http://arxiv.org/pdf/0711.2719v1.pdf |
geographic |
North Pole South Pole |
geographic_facet |
North Pole South Pole |
genre |
North Pole South pole |
genre_facet |
North Pole South pole |
op_source |
http://arxiv.org/pdf/0711.2719v1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.316.1062 http://arxiv.org/pdf/0711.2719v1.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766140680937144320 |