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Scintillation Arc from FRB 20220912A

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Abstract

We present the interstellar scintillation analysis of fast radio burst (FRB) 20220912A during its extremely active episode in 2022 using data from the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). We detect a scintillation arc in the FRB’s secondary spectrum, which describes the power in terms of the scattered FRB signals’ time delay and Doppler shift. The arc indicates that the scintillation is caused by a highly localized region. Our analysis favors a Milky Way origin of the ionized interstellar medium (IISM) for the localized scattering medium but cannot rule out a host galaxy origin. We present our method for detecting the scintillation arc, which can be applied generally to sources with irregularly spaced bursts or pulses. These methods could help shed light on the complex interstellar environment surrounding the FRBs and in our Galaxy.

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Authors and Affiliations

  1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China

    Zi-Wei Wu, Wei-Wei Zhu, Peng Jiang, Jia-Rui Niu, Jin-Lin Han, Di Li, Ke-Jia Lee, Pei Wang, Chen-Hui Niu, Heng Xu, Yong-Kun Zhang, De-Jiang Zhou & Yu-Hao Zhu

  2. Max-Planck-Institut für Radioastronomie, Bonn, 53121, Germany

    Robert A. Main

  3. Institute for Frontier in Astronomy and Astrophysics, Beijing Normal University, Beijing, 102206, China

    Wei-Wei Zhu

  4. Nevada Center for Astrophysics and Department of Physics and Astronomy, University of Nevada, Las Vegas, NV, 89154, USA

    Bing Zhang

  5. CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China

    Peng Jiang

  6. School of Astronomy, University of Chinese Academy of Sciences, Beijing, 100049, China

    Jia-Rui Niu, Jin-Lin Han, Wei-Yang Wang, Yong-Kun Zhang, De-Jiang Zhou & Yu-Hao Zhu

  7. NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban, 4000, South Africa

    Di Li

  8. Department of Astronomy, Peking University, Beijing, 100871, China

    Ke-Jia Lee, Bo-Jun Wang & Wei-Yang Wang

  9. Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, China

    Ke-Jia Lee & Bo-Jun Wang

  10. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, 91125, USA

    Dong-Zi Li

  11. South-Western Institute For Astronomy Research, Yunnan University, Kunming, 650504, China

    Yuan-Pei Yang

  12. School of Astronomy and Space Science, Nanjing University, Nanjing, 210093, China

    Fa-Yin Wang

  13. Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210023, China

    Fa-Yin Wang

  14. CSIRO Space and Astronomy, Epping, 1710, Australia

    Rui Luo

  15. Department of Astronomy, School of Physics and Materials Science, Guangzhou University, Guangzhou, 510006, China

    Rui Luo

  16. Research Center for Intelligent Computing Platforms, Zhejiang Laboratory, Hangzhou, 311100, China

    Yi Feng

  17. Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China

    Yong-Hua Xu

  18. Guangxi Key Laboratory for Relativistic Astrophysics, Department of Physics, Guangxi University, Nanning, 530004, China

    Can-Min Deng

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  1. Zi-Wei Wu
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Correspondence to Zi-Wei Wu or Wei-Wei Zhu.

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This work was supported by the National SKA Program of China (Grant Nos. 2020SKA0120200, and 2020SKA0120100), the CAS Project for Young Scientists in Basic Research (Grant No. YSBR-063), the National Natural Science Foundation of China (Grant Nos. 12041303, 11988101, 11833009, 11873067, 12041304, and 12203045), the National Key R&D Program of China (Grant Nos. 2017YFA0402600, 2021YFA0718500, 2017YFA0402602, and 2022YFC2205203), the CAS-MPG LEGACY Project, the Max-Planck Partner Group, the Key Research Project of Zhejiang Lab (Grant No. 2021PE0AC0), and the Western Light Youth Project of Chinese Academy of Sciences. This work made use of data from the FAST. FAST is a Chinese national mega-science facility, built and operated by the National Astronomical Observatories, Chinese Academy of Sciences.

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Wu, ZW., Main, R.A., Zhu, WW. et al. Scintillation Arc from FRB 20220912A. Sci. China Phys. Mech. Astron. 67, 219512 (2024). https://doi.org/10.1007/s11433-023-2186-2

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