CRAFTS for Fast Radio Bursts: Extending the Dispersion–Fluence Relation with New FRBs Detected by FAST
文献类型：期刊论文
| 作者 | Niu,Chen-Hui6; Li,Di6,7,8 ; Luo,Rui9; Wang,Wei-Yang3,6; Yao,Jumei6; Zhang,Bing1; Zhu,Wei-Wei6; Wang,Pei6; Ye,Haoyang2; Zhang,Yong-Kun7
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| 刊名 | The Astrophysical Journal Letters
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| 出版日期 | 2021-03-01 |
| 卷号 | 909期号:1 |
| ISSN号 | 2041-8205 |
| 关键词 | Radio transient sources Radio astronomy Radio bursts Astronomical object identification |
| DOI | 10.3847/2041-8213/abe7f0 |
| 英文摘要 | Abstract We report three new FRBs discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), namely FRB 181017.J0036+11, FRB 181118, and FRB 181130, through the Commensal Radio Astronomy FAST Survey (CRAFTS). Together with FRB 181123, which was reported earlier, all four FAST-discovered FRBs share the same characteristics of low fluence (≤0.2 Jy ms) and high dispersion measure (DM, >1000 pc cm?3), consistent with the anticorrelation between DM and fluence of the entire FRB population. FRB 181118 and FRB 181130 exhibit band-limited features. FRB 181130 is prominently scattered (τs ? 8 ms) at 1.25 GHz. FRB 181017.J0036+11 has full-bandwidth emission with a fluence of 0.042 Jy ms, which is one of the faintest FRB sources detected so far. CRAFTS has started to build a new sample of FRBs that fills the region for more distant and fainter FRBs in the fluence–DME diagram, previously out of reach of other surveys. The implied all-sky event rate of FRBs is 1.24 ? 0.90 + 1.94 × 10 5 sky?1 day?1 at the 95% confidence interval above 0.0146 Jy ms. We also demonstrate here that the probability density function of CRAFTS FRB detections is sensitive to the assumed intrinsic FRB luminosity function and cosmological evolution, which may be further constrained with more discoveries. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-909-1-ABE7F0 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/60144]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li,Di |
| 作者单位 | 1.Department of Physics and Astronomy, University of Nevada, Las Vegas, Las Vegas, NV 89154, USA 2.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China 3.School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People’s Republic of China 4.Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 1797, Australia 5.School of Physics and Technology, Wuhan University, Wuhan 430072, People’s Republic of China 6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; peterniu@nao.cas.cn, dili@nao.cas.cn, zhuww@nao.cas.cn 7.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 8.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa 9.CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping, NSW 1710, Australia |
| 推荐引用方式 GB/T 7714 | Niu,Chen-Hui,Li,Di,Luo,Rui,et al. CRAFTS for Fast Radio Bursts: Extending the Dispersion–Fluence Relation with New FRBs Detected by FAST[J]. The Astrophysical Journal Letters,2021,909(1). |
| APA | Niu,Chen-Hui.,Li,Di.,Luo,Rui.,Wang,Wei-Yang.,Yao,Jumei.,...&Zhang,Xinxin.(2021).CRAFTS for Fast Radio Bursts: Extending the Dispersion–Fluence Relation with New FRBs Detected by FAST.The Astrophysical Journal Letters,909(1). |
| MLA | Niu,Chen-Hui,et al."CRAFTS for Fast Radio Bursts: Extending the Dispersion–Fluence Relation with New FRBs Detected by FAST".The Astrophysical Journal Letters 909.1(2021). |
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