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 of the ionized interstellar medium (IISM). Our analysis favors a Milky Way origin 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.
Probing the cosmic web with fast radio bursts: II. Scintillation
Racah Institute of Physics, The Hebrew University(拉卡物理研究所,希伯来大学);University of Washington, Department of Astronomy(华盛顿大学天文学系);Astrophysics Research Center of the Open University (ARCO), The Open University of Israel(开放大学天体物理学研究中心(ARCO),以色列开放大学);Department of Natural Sciences, The Open University of Israel(自然科学与系,以色列开放大学);Department of Physics, The George Washington University(乔治华盛顿大学物理系);Department of Physics, University of California, Santa Barbara(加州大学圣塔芭芭拉分校物理系)
Continued radio observations of the persistent radio source associated with FRB20190520B provides insights into its origin
Indian Institute of Astrophysics(印度天体物理研究所);Tata Institute of Fundamental Research(塔塔基础研究所);Carnegie Mellon University(卡内基梅隆大学);National Centre for Radio Astrophysics(国家射电天体物理中心)
A broadband study of FRB20240114A with the Effelsberg 100-m radio telescope
Max-Planck-Institut für Radioastronomie(马克斯·普朗克射电天文研究所);Argelander Institute for Astronomy(阿根兰德天文学研究所);Julius-Maximilians-Universität Würzburg(维尔茨堡朱利叶斯-马克西米利安大学);University of Potsdam(波茨坦大学);Joint Institute for VLBI ERIC(甚长基线干涉测量联合研究所)
A HyperFlash and ÉCLAT view of the local environment and energetics of the repeating FRB 20240619D
Netherlands Institute for Radio Astronomy(荷兰射电天文研究所);Anton Pannekoek Institute for Astronomy, University of Amsterdam(阿姆斯特丹大学安东·潘内克天文研究所);The University of Oxford(牛津大学);Trottier Space Institute, McGill University(麦吉尔大学特罗蒂尔空间研究所);Department of Physics, McGill University(麦吉尔大学物理系);Cahill Center for Astronomy and Astrophysics, California Institute of Technology(加州理工学院卡希尔天体物理学中心);The Observatories of the Carnegie Institution for Science(卡内基科学学会天文台);MIT Kavli Institute for Astrophysic(麻省理工学院卡弗里天体物理研究所)
Unveiling the Local Environment of FRB 20220912A: Sub-arcsecond $4-26$ GHz Radio Continuum Mapping
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research(塔塔基础研究所射电天体物理国家中心);Indian Institute of Technology Kanpur(坎普尔印度理工学院);McGill University(麦吉尔大学);Northwestern University(西北大学);University of Amsterdam(阿姆斯特丹大学)
Two new highly scattered fast radio bursts: evidence for scatter broadening by the circumsource medium
Swinburne University of Technology(斯威本科技大学);Centre for Astrophysics and Supercomputing, Swinburne University of Technology(斯威本大学天体物理学与超级计算中心);Australia Telescope National Facility, CSIRO, Space and Astronomy(CSIRO空间与天文澳大利亚望远镜国家设施);Sydney Institute for Astronomy, School of Physics, The University of Sydney(悉尼大学物理学院悉尼天体物理学研究所);OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery, Swinburne University of Technology(斯威本大学ARC引力波发现卓越研究中心);China-Brazil Belt and Road Joint Laboratory on Radio Astronomy Technology(中巴“一带一路”射电天文技术联合实验室);Institute for Astronomy, University of Edinburgh, Royal Observatory(爱丁堡大学皇家天文台天体物理研究所);Inter-University Institute for Data Intensive Astronomy, Department of Astronomy, University of Cape Town(开普敦大学天文学系跨大学数据密集型天体物理研究所);Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University(西北大学天体物理学交叉探索与研究中心及物理与天文学系)
Localisation and host galaxy identification of new Fast Radio Bursts with MeerKAT
ASTRON, the Netherlands Institute for Radio Astronomy(荷兰射电天文研究所);ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)(引力波发现卓越研究中心);Department of Astronomy and Astrophysics, University of Chicago(芝加哥大学天体物理学系);Department of Astronomy and Astrophysics, University of California Santa Cruz(加州大学圣克鲁斯分校天体物理学系);Institute for the Physics and Mathematics of the Universe (Kavli IPMU)(宇宙物理与数学研究所(Kavli IPMU));Division of Science, National Astronomical Observatory of Japan(日本国立天文台科学部);Max-Planck-Institut für Radioastronomie(马克斯·普朗克射电天文研究所);University of Dodoma, College of Natural and Mathematical Sciences(多多马大学自然与理学院);Jodrell Bank Centre for Astrophysics, University of Manchester(曼彻斯特大学乔德雷尔银行天体物理学中心)
A new fast radio burst in the datasets containing the Lorimer burst
利用Parkes 64 m口径射电望远镜的多波束接收机,在1.4GHz的麦哲伦云观测资料中,发现了一个新的快速射电暴(FRB~010312)。这些数据集包括洛里默爆发(FRB~010724),它早于日期,我们也重新检测。新的爆发具有更高的色散测量值1187 cm $^{-3}$ pc。该爆发是迄今为止发现的最广泛的爆发之一,是已知的第二早的FRB,也是第九个发现的分散测量值大于1000 cm $^{-3}\,$ pc的FRB。我们的发现表明,在现有的帕克斯数据档案中可能还有更多的爆发事件。
Four New Fast Radio Bursts Discovered in the Parkes 70-cm Pulsar Survey Archive
我们提出了四个新的快速射电暴发现在搜索的帕克斯70厘米脉冲星调查数据档案分散的单脉冲和爆发。我们用HEIMDALL和FETCH检测和分类算法搜索了0到5000 pc cm $^{-3}$之间的离散度(DM)。发现的所有四个FRB的宽度($> 50$ ms)明显大于迄今为止检测和编目的几乎所有FRB。大的脉冲宽度不受星际散射或通道内色散拖尾的支配。其中一个FRB的DM为3338 pc cm $^{3}$,是迄今为止对任何FRB测量的最大DM。这也是迄今为止任何射电望远镜探测到的第一批FRB,比Lorimer爆发早了近十年。我们的研究结果表明,脉冲星调查档案仍然是以前未检测到的FRB的重要来源,搜索FRB的时间尺度上延伸超过$\sim 100$ ms可能会发现存在更大的人口的宽脉冲FRB。
Precision Determination of Scintillation Screen Parameters from Annual Modulation Measurement of Pulsar Scintillation Arc Curvature with the FAST Telescope
South-Western Institute for Astronomy Research (SWIFAR), Yunnan University(西南天文研究所,云南大学);Xinjiang Astronomical Observatory, Chinese Academy of Sciences(中国科学院新疆天文台);Key Laboratory of radio Astronomy, Chinese Academy of Sciences(中国科学院射电天文重点实验室);Xinjiang Key Laboratory of radio Astrophysics(新疆射电天体物理重点实验室);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University(北京师范大学前沿天文与天体物理研究所);Yunnan Observatories, Chinese Academy of Sciences(中国科学院云南天文台);Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences(中国科学院射电天文与技术重点实验室)