Shriharsh P. Tendulkar, Armando Gil de Paz, Aida Yu. Kirichenko, Jason W. T. Hessels, Mohit Bhardwaj, Fernando Ávila, Cees Bassa, Pragya Chawla, Emmanuel Fonsec… 展开作者
Shriharsh P. Tendulkar, Armando Gil de Paz, Aida Yu. Kirichenko, Jason W. T. Hessels, Mohit Bhardwaj, Fernando Ávila, Cees Bassa, Pragya Chawla, Emmanuel Fonseca, Victoria M. Kaspi, Aard Keimpema, Franz Kirsten, T. Joseph W. Lazio, Benito Marcote, Kiyoshi Masui, Kenzie Nimmo, Zsolt Paragi, Mubdi Rahman, Daniel Reverte Payá, Paul Scholz, Ingrid Stairs
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Updated version: Updated Figure 2. 16 pages, 4 figures, 1 table. Published in ApJ Letters. Comments welcome
Fast Radio Burst FRB 20180916B in its host galaxy SDSS J015800.28+654253.0 at 149 Mpc is by far the closest-known FRB with a robust host galaxy association. The source also exhibits a 16.35-day period in its bursting. Here we present optical and infrared imaging as well as integral field spectroscopy observations of FRB 20180916B with the WFC3 camera on the Hubble Space Telescope and the MEGARA spectrograph on the 10.4-m Gran Telescopio Canarias. The 60-90 milliarcsecond (mas) resolution of the Hubble imaging, along with the previous 2.3-mas localization of FRB 20180916B, allow us to probe its environment with a 30-60 pc resolution. We constrain any point-like star-formation or HII region at the location of FRB 20180916B to have an H$α$ luminosity $L_\mathrm{Hα} \lesssim 10^{37}\,\mathrm{erg\,s^{-1}}$ and, correspondingly, constrain the local star-formation rate to be $\lesssim10^{-4}\,\mathrm{M_\odot\,yr^{-1}}$. The constraint on H$α$ suggests that possible stellar companions to FRB 20180916B should be of a cooler, less massive spectral type than O6V. FRB 20180916B is 250 pc away (in projected distance) from the brightest pixel of the nearest young stellar clump, which is $\sim380$\,pc in size (full-width at half maximum). With the typical projected velocities of pulsars, magnetars, or neutron stars in binaries (60-750 km s$^{-1}$), FRB 20180916B would need 800 kyr to 7 Myr to traverse the observed distance from its presumed birth site. This timescale is inconsistent with the active ages of magnetars ($\lesssim10$ kyr). Rather, the inferred age and observed separation are compatible with the ages of high-mass X-ray binaries and gamma-ray binaries, and their separations from the nearest OB associations.
LOFAR constraints on the repetition & environments of CHIME FRBs
ASTRON, 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·潘内科克天体物理研究所);Max Planck Institute for Radio Astronomy, University of Bonn(波恩大学马克斯·普朗克射电天文研究所);Trottier Space Institute, McGill University(麦吉尔大学特罗蒂尔太空研究所);Department of Physics, McGill University(麦吉尔大学物理系);Laboratoire d’Astrophysique de Marseille, Aix-Marseille University, CNRS, CNES(马赛大学CNRS/CNES天体物理学实验室)
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)
Statistical inference of fast radio burst environments using galaxy number density
National Chung Hsing University(中兴大学);National Tsing Hua University(清华大学);National Centre for Radio Astrophysics (NCRA–TIFR)(国家射电天文中心(NCRA-TIFR));Tohoku University(东北大学)
本研究利用WISE x PS1星表,通过KS检验统计分析CHIME星表1中19个重复FRB与253个非重复FRB的环境,发现二者环境无显著差异,且FRB或偏好低密度星系环境,凸显大样本FRB研究的必要性。
AU or pc? Inferring the distance of magnetized plasma near FRBs from propagation diagnostics
National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);Department of Astronomy, Tsinghua University(清华大学天文系);School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院);Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education(教育部现代天文与天体物理实验室(南京大学));Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台)
Tracing the Host-Galaxy Environments of FRBs with a New Sample of Localized Sources Detected with the DSA-110
California Institute of Technology(加州理工学院);Owens Valley Radio Observatory, California Institute of Technology(加州理工学院欧文斯谷射电天文台);Observatories of the Carnegie Institution for Science(卡内基科学研究所天文台)
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)
The molecular gas kinematics in the host galaxy of non-repeating FRB 180924B
快速射电暴(FRB)是具有大色散测量的毫秒持续时间瞬态。FRB的起源仍然是个谜。了解FRB起源的方法之一是探测FRB宿主星系的物理环境。绘制FRB宿主星系中的分子气体运动学是至关重要的,因为它导致恒星形成,这可能与FRB祖先的诞生有关。然而,大多数以前的工作都集中在它的恒星组成的FRB宿主星系。因此,我们首次在$z= 0.3216$上报道了非重复FRB 180924 B宿主星系中的分子气体运动学。利用阿塔卡玛大型毫米/亚毫米波阵(ALMA)在其宿主星系中探测到CO(3-2)发射线的两个速度分量:一个分量的峰值($-155.40$ km s $^{-1}$)位于宿主星系中心附近,另一个分量的峰值($-7.76$ km s $^{-1}$)位于FRB位置附近. CO(3-2)谱显示出具有A $_{\rm peak}$ $=2.03\pm 0.39$的不对称轮廓,其中A $_{\rm peak}$是两个速度分量之间的峰值通量密度比。CO(3-2)速度图也显示出从$-180$ km s $^{-1}$到8 km s $^{-1}$的非对称速度梯度。这些结果表明宿主星系中分子气体的动力学结构受到了干扰。这种扰动的动力学结构的重复FRB宿主星系使用HI发射线在以前的工作中报告。我们的研究结果表明,非重复和重复FRB通常会出现在扰动动力学环境中,这表明气体运动学和FRB祖细胞之间可能存在联系。
An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102
快速射电暴(英语:Fast radio burst,缩写为FRB)是一种毫秒级的、未知物理来源的河外射电闪光。FRB 121102是唯一已知的重复FRB源,它位于一个红移z = 0.193的矮星系的恒星形成区,在空间上与一个紧凑的持久射电源重合。爆发的起源,持续源的性质,以及当地环境的属性仍然存在争议。在这里,我们展示了在源坐标系中,在极高且可变的法拉第旋转测量下,除了窄的(< 30 μ s)时间结构外,在相隔7个月的历元上,在RM_src = +1.46 x 10^5 rad m^-2和+1.33 x 10^5 rad m^-2时,显示出~100%线偏振发射的爆发。FRB 121102的大的和可变的旋转测量表明,它是在一个极端的和动态的磁离子环境,而短的爆发持续时间主张中子星的起源。到目前为止,只有在大质量黑洞(M_BH > 10^4 MSun)附近才能观测到如此大的自转量。事实上,持久射电源的性质与低光度、吸积的大质量黑洞的性质是相容的。因此,爆发可能来自这样环境中的中子星。然而,观察到的特性也可以用其他模型来解释,例如围绕着年轻中子星的高磁化风星云或超新星遗迹。
A milliarcsecond localization associates FRB 20190417A with a compact persistent radio source and an extreme magneto-ionic environment
Anton Pannekoek Institute for Astronomy, University of Amsterdam(阿姆斯特丹大学安东·潘内库克天文学研究所);SKA Observatory (SKAO)(平方公里阵列射电望远镜天文台);University of Toronto(多伦多大学);McGill University(麦吉尔大学);ASTRON, Netherlands Institute for Radio Astronomy(荷兰射电天文研究所);Chalmers University of Technology(查尔姆斯理工大学);Joint Institute for VLBI ERIC(甚长基线干涉测量欧洲研究基础设施合作组织);Stanford University(斯坦福大学);University of Manchester(曼彻斯特大学);University of Bristol(布里斯托大学);Ventspils University of Applied Sciences(文茨皮尔斯应用科学大学);Cornell University(康奈尔大学);Nicolaus Copernicus University(尼古拉·哥白尼大学);University of California, Santa Cruz(加州大学圣克鲁兹分校);University of California, Berkeley(加州大学伯克利分校);Massachusetts Institute of Technology(麻省理工学院);Aix-Marseille Univ.(艾克斯-马赛大学);York University(约克大学);California Institute of Technology(加州理工学院)
FRB20250613A: a remarkable repeating FRB with apparent millisecond-timescale scattering variations
Swinburne University of Technology(斯威本科技大学);Northwestern University(西北大学);Curtin University(科廷大学);The University of Sydney(悉尼大学);University of Edinburgh(爱丁堡大学)
A steadily declining dispersion measure for the repeating fast radio burst FRB 20220529A: Evidence for an FRB engine embedded in an expanding supernova remnant
McGill University(麦吉尔大学);University of Toronto(多伦多大学);Northwestern University(西北大学);Massachusetts Institute of Technology(麻省理工学院)
Constraining the Supernova Remnant Environment of FRB 190520B with Dispersion Measure and Scattering Timescale
Tsung-Dao Lee Institute, Shanghai Jiao Tong University(上海交大李政道研究所);School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院);Université Paris Cité, CNRS, AstroParticule et Cosmologie(巴黎西岱大学);Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education(教育部现代天体学与天文学重点实验室(南京大学));Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台)
A spatially resolved view of Fast Radio Burst host metallicities with Integral-field Spectroscopy
Northwestern University(西北大学);University of Chicago(芝加哥大学);Massachusetts Institute of Technology(麻省理工学院);University of California, Santa Cruz(加州大学圣克鲁兹分校)
The Low-mass Dwarf Host Galaxy of Nonrepeating FRB 20230708A
Maria Mitchell Observatory(玛丽亚·米切尔天文台);Max Planck Institute for Gravitational Physics (Albert Einstein Institute)(马克斯·普朗克引力物理研究所(爱因斯坦研究所));University of Glasgow(格拉斯哥大学);Northwestern University(西北大学);Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA)(天体物理学跨学科探索与研究中心);Macquarie University(麦考瑞大学);University of California, Santa Cruz(加利福尼亚大学圣克鲁兹分校);Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)(卡弗里宇宙物理学和数学研究所)