Scintillation Arc from FRB 20220912A

作     者：Zi-Wei Wu Robert AMain Wei-Wei Zhu Bing Zhang Peng Jiang Jia-Rui Niu Jin-Lin Han Di Li Ke-Jia Lee Dong-Zi Li Yuan-Pei Yang Fa-Yin Wang Rui Luo Pei Wang Chen-Hui Niu Heng Xu Bo-Jun Wang Wei-Yang Wang Yong-Kun Zhang Yi Feng De-Jiang Zhou Yong-Hua Xu Can-Min Deng Yu-Hao Zhu 

作者机构：National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Max-Planck-Institut für RadioastronomieBonn 53121Germany Institute for Frontier in Astronomy and AstrophysicsBeijing Normal UniversityBeijing 102206China Nevada Center for Astrophysics and Department of Physics and AstronomyUniversity of NevadaLas VegasNV 89154USA CAS Key Laboratory of FASTNational Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of AstronomyUniversity of Chinese Academy of SciencesBeijing 100049China NAOC-UKZN Computational Astrophysics CentreUniversity of KwaZulu-NatalDurban 4000South Africa Department of AstronomyPeking UniversityBeijing 100871China Kavli Institute for Astronomy and AstrophysicsPeking UniversityBeijing 100871China Cahill Center for Astronomy and AstrophysicsCalifornia Institute of TechnologyPasadena 91125USA South-Western Institute For Astronomy ResearchYunnan UniversityKunming 650504China School of Astronomy and Space ScienceNanjing UniversityNanjing 210093China Key Laboratory of Modern Astronomy and Astrophysics(Nanjing University)Ministry of EducationNanjing 210023China CSIRO Space and AstronomyEpping 1710Australia Department of AstronomySchool of Physics and Materials ScienceGuangzhou UniversityGuangzhou 510006China Research Center for Intelligent Computing PlatformsZhejiang LaboratoryHangzhou 311100China Yunnan ObservatoriesChinese Academy of SciencesKunming 650011China Guangxi Key Laboratory for Relativistic AstrophysicsDepartment of PhysicsGuangxi UniversityNanning 530004China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2024年第67卷第1期

页      面：134-142页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：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 2022YFC2205203) the CAS-MPG LEGACY Project the Max-Planck Partner Group,the Key Research Project of Zhejiang Lab(Grant No.2021PE0AC0) the Western Light Youth Project of Chinese Academy of Sciences。 

主　　题：fast radio burst scintillation FRB 20220912A 

摘      要：We present the interstellar scintillation analysis of fast radio burst(FRB)20220912A during its extremely active episode in 2022using 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.