The influence of thermonuclear bursts on polar caps of accreting X-ray millisecond pulsar MAXI J1816-195
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910404755587072 |
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| author | Ji, Long Ge, Mingyu Chen, Yupeng Li, Zhaosheng Wang, Peng-Ju Zhang, Shu Zhang, Shuang-Nan |
| author_facet | Ji, Long Ge, Mingyu Chen, Yupeng Li, Zhaosheng Wang, Peng-Ju Zhang, Shu Zhang, Shuang-Nan |
| contents | We report accretion-powered pulsations for the first time during thermonuclear bursts in hard X-rays, which were observed with Insight-HXMT in 2022 during the outburst of the accreting X-ray millisecond pulsar MAXI J1816-195. By stacking 73 bursts, we detected pulse profiles in 8-30 keV and 30-100 keV during bursts, which are identical to those obtained from the persistent (non-burst) emission. On average, no significant phase lag was observed between burst and persistent pulse profiles. In addition, we suggest that the interaction with burst photons can be used as a direct diagnostic to distinguish contributions from the hot plasma near polar caps and the corona around the accretion disk, which are highly degenerate in their spectral shapes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06747 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The influence of thermonuclear bursts on polar caps of accreting X-ray millisecond pulsar MAXI J1816-195 Ji, Long Ge, Mingyu Chen, Yupeng Li, Zhaosheng Wang, Peng-Ju Zhang, Shu Zhang, Shuang-Nan High Energy Astrophysical Phenomena We report accretion-powered pulsations for the first time during thermonuclear bursts in hard X-rays, which were observed with Insight-HXMT in 2022 during the outburst of the accreting X-ray millisecond pulsar MAXI J1816-195. By stacking 73 bursts, we detected pulse profiles in 8-30 keV and 30-100 keV during bursts, which are identical to those obtained from the persistent (non-burst) emission. On average, no significant phase lag was observed between burst and persistent pulse profiles. In addition, we suggest that the interaction with burst photons can be used as a direct diagnostic to distinguish contributions from the hot plasma near polar caps and the corona around the accretion disk, which are highly degenerate in their spectral shapes. |
| title | The influence of thermonuclear bursts on polar caps of accreting X-ray millisecond pulsar MAXI J1816-195 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2404.06747 |