Scintillation velocity and arc observations of FRB 20201124A
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arXiv
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2024
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| author | Wu, Ziwei Zhu, Weiwei Zhang, Bing Feng, Yi Han, JinLin Li, Di Li, Dongzi Luo, Rui Niu, Chenhui Niu, Jiarui Wang, Bojun Wang, Fayin Wang, Pei Wang, Weiyang Xu, Heng Yang, Yuanpei Zhang, Yongkun Zhou, Dejiang Zhu, Yuhao Deng, Can-Min Xu, Yonghua |
| author_facet | Wu, Ziwei Zhu, Weiwei Zhang, Bing Feng, Yi Han, JinLin Li, Di Li, Dongzi Luo, Rui Niu, Chenhui Niu, Jiarui Wang, Bojun Wang, Fayin Wang, Pei Wang, Weiyang Xu, Heng Yang, Yuanpei Zhang, Yongkun Zhou, Dejiang Zhu, Yuhao Deng, Can-Min Xu, Yonghua |
| contents | We present the scintillation velocity measurements of FRB~20201124A from the FAST observations, which reveal an annual variation. This annual variation is further supported by changes detected in the scintillation arc as observed from the secondary spectrum. We attribute the annual velocity variation to the presence of a moderately anisotropic scattering screen located at a distance of 0.4$\pm$0.1~kpc from Earth. Our results prove that the scintillation of this FRB is mainly caused by material close to Earth on a Galactic scale. However, scintillation observations of other FRBs may expose their surrounding environment or uncover possible orbital motion if scintillation is caused by materials in their host galaxy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_12218 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Scintillation velocity and arc observations of FRB 20201124A Wu, Ziwei Zhu, Weiwei Zhang, Bing Feng, Yi Han, JinLin Li, Di Li, Dongzi Luo, Rui Niu, Chenhui Niu, Jiarui Wang, Bojun Wang, Fayin Wang, Pei Wang, Weiyang Xu, Heng Yang, Yuanpei Zhang, Yongkun Zhou, Dejiang Zhu, Yuhao Deng, Can-Min Xu, Yonghua High Energy Astrophysical Phenomena We present the scintillation velocity measurements of FRB~20201124A from the FAST observations, which reveal an annual variation. This annual variation is further supported by changes detected in the scintillation arc as observed from the secondary spectrum. We attribute the annual velocity variation to the presence of a moderately anisotropic scattering screen located at a distance of 0.4$\pm$0.1~kpc from Earth. Our results prove that the scintillation of this FRB is mainly caused by material close to Earth on a Galactic scale. However, scintillation observations of other FRBs may expose their surrounding environment or uncover possible orbital motion if scintillation is caused by materials in their host galaxy. |
| title | Scintillation velocity and arc observations of FRB 20201124A |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2406.12218 |