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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.06150 |
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| _version_ | 1866908870198165504 |
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| author | Li, Wenze Pan, Zhichen Qian, Lei Zhang, Liyun Chen, Yujie Yin, Dejiang Li, Baoda Dai, Yinfeng Li, Yaowei Jiang, Dongyue Hao, Qiaoli Huang, Menglin Wang, Xingyi Niu, Xianghua Guo, Minglei Song, Jinyou Chen, Shuangyuan |
| author_facet | Li, Wenze Pan, Zhichen Qian, Lei Zhang, Liyun Chen, Yujie Yin, Dejiang Li, Baoda Dai, Yinfeng Li, Yaowei Jiang, Dongyue Hao, Qiaoli Huang, Menglin Wang, Xingyi Niu, Xianghua Guo, Minglei Song, Jinyou Chen, Shuangyuan |
| contents | As most of the companions in the double neutron star systems should be normal pulsars, the Fast Folding Algorithm (FFA), which is suitable for finding these long spin period pulsars, was used to search their possible radio signals. A time domain resampling code PYSOLATOR was used to maximize the available data length by removing the orbital modulation. We collected and processed 272.2 hours observational data taken by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) for the 13 double neutron star systems in its sky. The signal-to-noise ratios of known pulsar signals are obviously improved by this search method, including the detection of a faint pulsar signal which only saw by folding the data. Unfortunately, no companion signals were found among all the 197962 candidates. Geodetic precession of the orbit could enhance detectability in future observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_06150 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Search for Periodic Radio Signals from Double Neutron Star System Companions Using the Fast Folding Algorithm Li, Wenze Pan, Zhichen Qian, Lei Zhang, Liyun Chen, Yujie Yin, Dejiang Li, Baoda Dai, Yinfeng Li, Yaowei Jiang, Dongyue Hao, Qiaoli Huang, Menglin Wang, Xingyi Niu, Xianghua Guo, Minglei Song, Jinyou Chen, Shuangyuan High Energy Astrophysical Phenomena As most of the companions in the double neutron star systems should be normal pulsars, the Fast Folding Algorithm (FFA), which is suitable for finding these long spin period pulsars, was used to search their possible radio signals. A time domain resampling code PYSOLATOR was used to maximize the available data length by removing the orbital modulation. We collected and processed 272.2 hours observational data taken by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) for the 13 double neutron star systems in its sky. The signal-to-noise ratios of known pulsar signals are obviously improved by this search method, including the detection of a faint pulsar signal which only saw by folding the data. Unfortunately, no companion signals were found among all the 197962 candidates. Geodetic precession of the orbit could enhance detectability in future observations. |
| title | Search for Periodic Radio Signals from Double Neutron Star System Companions Using the Fast Folding Algorithm |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2603.06150 |