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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/2503.05237 |
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| _version_ | 1866909585476943872 |
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| author | Peng, Long Li, Zhaosheng Pan, Yuanyue Weng, Shanshan Yan, Wengming Wang, Na Wang, Bojun Wang, Shuangqiang |
| author_facet | Peng, Long Li, Zhaosheng Pan, Yuanyue Weng, Shanshan Yan, Wengming Wang, Na Wang, Bojun Wang, Shuangqiang |
| contents | We present 12 observations of the accreting millisecond X-ray pulsar Aql X-1, taken from August 2022 to October 2023 using the Five-hundred-meter Aperture Spherical Radio Telescope at 1250 MHz. These observations covered both the quiescence and X-ray outburst states, as determined by analyzing the X-ray data from the Neutron Star Interior Composition Explorer and the Monitor of All-sky X-ray Image. Periodicity and single-pulse searches were conducted for each observation, but no pulsed signals were detected. The obtained upper limit flux densities are in the range of 2.86-5.73 uJy, which provide the lowest limits to date. We discuss several mechanisms that may prevent detection, suggesting that Aql X-1 may be in the radio-ejection state during quiescence, where the radio pulsed emissions are absorbed by the matter surrounding the system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05237 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Radio pulse search from Aql X-1 Peng, Long Li, Zhaosheng Pan, Yuanyue Weng, Shanshan Yan, Wengming Wang, Na Wang, Bojun Wang, Shuangqiang High Energy Astrophysical Phenomena We present 12 observations of the accreting millisecond X-ray pulsar Aql X-1, taken from August 2022 to October 2023 using the Five-hundred-meter Aperture Spherical Radio Telescope at 1250 MHz. These observations covered both the quiescence and X-ray outburst states, as determined by analyzing the X-ray data from the Neutron Star Interior Composition Explorer and the Monitor of All-sky X-ray Image. Periodicity and single-pulse searches were conducted for each observation, but no pulsed signals were detected. The obtained upper limit flux densities are in the range of 2.86-5.73 uJy, which provide the lowest limits to date. We discuss several mechanisms that may prevent detection, suggesting that Aql X-1 may be in the radio-ejection state during quiescence, where the radio pulsed emissions are absorbed by the matter surrounding the system. |
| title | Radio pulse search from Aql X-1 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2503.05237 |