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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.12305 |
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| _version_ | 1866912757093236736 |
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| author | Xu, Zi-Hao Wang, Wei-Yang Cao, Shun-Shun Xu, Ren-Xin |
| author_facet | Xu, Zi-Hao Wang, Wei-Yang Cao, Shun-Shun Xu, Ren-Xin |
| contents | A numerical framework to calculate the height and potential of the vacuum inner gap of pulsars is presented here. %
The results demonstrate that small mountains on a pulsar's polar cap tend to significantly influence the properties of the inner vacuum gap, making it easier for sparks to form. %
In this scenario, the magnetospheric activity observed from the pulsars PSR J0250$+$5854 and PSR J2144$-$3933 which lie below the traditional pulsar death line, and some single-pulse modulation phenomena could also then be understood. %
Furthermore, the presence of small mountains should depend on the puzzling state of supranuclear matter inside pulsars. %
In order to sustain stable mountains on the surface, pulsars might be made of solid strangeon matter, which is favoured by both the charge neutrality and the flavour symmetry of quarks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_12305 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Pulsar Sparking: What if mountains on the surface? Xu, Zi-Hao Wang, Wei-Yang Cao, Shun-Shun Xu, Ren-Xin High Energy Astrophysical Phenomena A numerical framework to calculate the height and potential of the vacuum inner gap of pulsars is presented here. % The results demonstrate that small mountains on a pulsar's polar cap tend to significantly influence the properties of the inner vacuum gap, making it easier for sparks to form. % In this scenario, the magnetospheric activity observed from the pulsars PSR J0250$+$5854 and PSR J2144$-$3933 which lie below the traditional pulsar death line, and some single-pulse modulation phenomena could also then be understood. % Furthermore, the presence of small mountains should depend on the puzzling state of supranuclear matter inside pulsars. % In order to sustain stable mountains on the surface, pulsars might be made of solid strangeon matter, which is favoured by both the charge neutrality and the flavour symmetry of quarks. |
| title | Pulsar Sparking: What if mountains on the surface? |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2506.12305 |