The FAST Discovery of a binary millisecond pulsar PSR~J1647-0156B (M12B) with a candidate cross matching algorithm
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arXiv
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| Natura: | Preprint |
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2026
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| _version_ | 1866915852096372736 |
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| author | Yu, Qiuyu Wang, Yujie Pan, Zhichen Zhang, Zhongli Qian, Lei Wu, Zhongzu Eatough, Ralph P. Yin, Dejiang Li, Baoda Chen, Yujie Dai, Yinfeng Li, Yifeng |
| author_facet | Yu, Qiuyu Wang, Yujie Pan, Zhichen Zhang, Zhongli Qian, Lei Wu, Zhongzu Eatough, Ralph P. Yin, Dejiang Li, Baoda Chen, Yujie Dai, Yinfeng Li, Yifeng |
| contents | We propose a pulsar candidate cross matching algorithm to sift radio pulsar search candidates from repeated observations of the same sky location such as globular clusters, high energy sources, or supernova remnants. Our method uses both the candidate spin period ($P$) and dispersion measure (DM) value; if two or more candidates from different observations have similar spin periods to within 1\%, and dispersion measure values within 10\%, they are likely to correspond to the same candidate detection. We have demonstrated the effectiveness of our method through the discovery of the pulsar M12B with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). This pulsar has a spin period of 2.76\,ms and a dispersion measure of $42.70 \pm 0.05\,\mathrm{cm}^{-3}~\mathrm{pc}$. This pulsar has a profile with three peaks, being faint, showing scintillation. It is in an approximately 0.53-day orbit. Our discovery indicates that more pulsars might be effectively discovered if the algorithm is applied to the search results from other archival globular cluster observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_10347 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The FAST Discovery of a binary millisecond pulsar PSR~J1647-0156B (M12B) with a candidate cross matching algorithm Yu, Qiuyu Wang, Yujie Pan, Zhichen Zhang, Zhongli Qian, Lei Wu, Zhongzu Eatough, Ralph P. Yin, Dejiang Li, Baoda Chen, Yujie Dai, Yinfeng Li, Yifeng High Energy Astrophysical Phenomena We propose a pulsar candidate cross matching algorithm to sift radio pulsar search candidates from repeated observations of the same sky location such as globular clusters, high energy sources, or supernova remnants. Our method uses both the candidate spin period ($P$) and dispersion measure (DM) value; if two or more candidates from different observations have similar spin periods to within 1\%, and dispersion measure values within 10\%, they are likely to correspond to the same candidate detection. We have demonstrated the effectiveness of our method through the discovery of the pulsar M12B with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). This pulsar has a spin period of 2.76\,ms and a dispersion measure of $42.70 \pm 0.05\,\mathrm{cm}^{-3}~\mathrm{pc}$. This pulsar has a profile with three peaks, being faint, showing scintillation. It is in an approximately 0.53-day orbit. Our discovery indicates that more pulsars might be effectively discovered if the algorithm is applied to the search results from other archival globular cluster observations. |
| title | The FAST Discovery of a binary millisecond pulsar PSR~J1647-0156B (M12B) with a candidate cross matching algorithm |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2603.10347 |