The host galaxy and persistent radio counterpart of FRB 20201124A
Vikram Ravi, Casey J. Law, Dongzi Li, Kshitij Aggarwal, Sarah Burke-Spolaor, Liam Connor, T. Joseph W. Lazio, Dana Simard, Jean Somalwar, Shriharsh P. Tendulkar
快速射电暴(FRB)宿主星系的物理性质为研究FRB源的性质提供了重要线索。到目前为止,已确定的16个FRB宿主在质量和特定恒星形成速率上跨越了三个数量级,这意味着一个普遍存在的祖先物体。以~弧秒精度定位的FRB还可以有效地搜索相关的多波长和多时间尺度对应物,例如与FRB 20121102 A相关的持久射电源。在这里,我们提出了一个重复源FRB 20201124 A的本地化,以及它与宿主星系(SDSS J050803.48+260338.0,z=0.098)和持久的无线电源的关联。该星系质量巨大($\sim3\times10^{10} M_{\odot}$),恒星形成(每年只有几个太阳质量),尘埃。甚大阵和甚长基线阵对持久性射电源的观测测量了$1.2\times10^{29}$ erg s $^{-1}$ Hz $^{-1}$的光度,并显示出在$\gtrsim50$ mas尺度上的扩展。我们将这种射电辐射与SDSS J050803.48+260338.0中正在进行的恒星形成活动联系起来。更深入,更详细的观测需要更好地利用欧洲VLBI网络报告的FRB 20201124 A的毫角秒尺度定位,并确定主机贡献的大色散测量($150-220$ pc cm $^{-3}$)的起源。SDSS J050803.48+260338.0的质量比任何先前与重复FRB源相关的星系或恒星系统都要大一个数量级,但与迄今为止非重复FRB的宿主相当,进一步建立了两个明显的人口之间的联系。
英文摘要:
The physical properties of fast radio burst (FRB) host galaxies provide important clues towards the nature of FRB sources. The 16 FRB hosts identified thus far span three orders of magnitude in mass and specific star-formation rate, implicating a ubiquitously occurring progenitor object. FRBs localised with ~arcsecond accuracy also enable effective searches for associated multi-wavelength and multi-timescale counterparts, such as the persistent radio source associated with FRB 20121102A. Here we present a localisation of the repeating source FRB 20201124A, and its association with a host galaxy (SDSS J050803.48+260338.0, z=0.098) and persistent radio source. The galaxy is massive ($\sim3\times10^{10} M_{\odot}$), star-forming (few solar masses per year), and dusty. Very Large Array and Very Long Baseline Array observations of the persistent radio source measure a luminosity of $1.2\times10^{29}$ erg s$^{-1}$ Hz$^{-1}$, and show that is extended on scales $\gtrsim50$ mas. We associate this radio emission with the ongoing star-formation activity in SDSS J050803.48+260338.0. Deeper, more detailed observations are required to better utilise the milliarcsecond-scale localisation of FRB 20201124A reported from the European VLBI Network, and determine the origin of the large dispersion measure ($150-220$ pc cm$^{-3}$) contributed by the host. SDSS J050803.48+260338.0 is an order of magnitude more massive than any galaxy or stellar system previously associated with a repeating FRB source, but is comparable to the hosts of so far non-repeating FRBs, further building the link between the two apparent populations.
FRB 190520B embedded in a magnetar wind nebula and supernova remnant: luminous persistent radio source, decreasing dispersion measure and large rotation measure
最近,FRB 190520 B被500米口径球面射电望远镜(FAST)发现,具有最大的河外色散测量(DM)。DM超过星系际介质和银河系的贡献估计为$\sim 900$ pc cm $^{-3}$,这是近十倍高于其他快速射电暴(FRB)的主机星系。DM以每天$\sim0.1$ pc cm $^{-3}$的速率降低。它是第二个与紧凑持续射电源(PRS)相关的FRB。发现旋转度量(RM)大于$1.8 \times 10^{5} \mathrm{rad} ~\mathrm{m}^{-2}$。在这封信中,我们认为FRB 190520 B是由大质量恒星的核心坍缩形成的年轻magentar提供动力,嵌入在磁星风星云(MWN)和超新星遗迹(SNR)的复合物中。磁星的能量注入驱动MWN和SN喷出物一起演化,PRS由MWN的同步辐射产生。磁星的内部磁场为$B_{\text{int}}\sim (2-4)\times 10^{16}$ G,年龄为$t_{\text{age}}\sim 14-22$ yr。致密的SN喷出物和冲击壳贡献了所观察到的DM和RM的很大一部分。我们的模型可以很自然地同时解释FRB 190520 B的发光PRS、下降DM和极端RM。
A repeating fast radio burst associated with a persistent radio source
快速射电暴(FRB)的色散扫描被用来探测星系际介质中的电离重子含量,它被认为是控制总的河外色散的主要因素。虽然主星系的色散措施(DM)的贡献似乎是最FRB的小,在至少一种情况下,有极端的磁离子局部环境和紧凑的持久性射电源的证据。在这里,我们报告的检测和定位的重复FRB 20190520 B,这是一个紧凑的,持久的无线电源,并与矮宿主星系的高比恒星形成率在红移$z=0.241\pm0.001$。估计的宿主星系DM $\approx 903^{+72}_{-111}$ pc cm $^{-3}$,近一个数量级高于平均的FRB宿主星系,远远超过DM的星系际介质的贡献。因此,在没有准确的宿主星系识别的情况下,推断FRB的红移是有必要的。
A Persistently Active Fast Radio Burst source Embedded in an Expanding Supernova Remnant
Central China Normal University(华中师范大学);Tsinghua University(清华大学);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);Yunnan University(云南大学);Zhejiang Laboratory(之江实验室);University of Chinese Academy of Sciences(中国科学院大学);Xinjiang Astronomical Observatory, Chinese Academy of Sciences(中国科学院新疆天文台);Zhejiang University(浙江大学);University of Nevada, Las Vegas(内华达大学拉斯维加斯分校);Shanghai Astronomical Observatory, Chinese Academy of Sciences(中国科学院上海天文台);University of Science and Technology of China(中国科学技术大学);CSIRO(澳大利亚联邦科学与工业研究组织);Western Sydney University(西悉尼大学);Shanghai Jiao Tong University(上海交通大学);National Astronomical Observatory of Japan(日本国立天文台)
A unified model of active repeating fast radio bursts associated with persistent radio sources
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(教育部现代天文学和天体物理重点实验室(南京大学));Research Center for Astronomical Computing, Zhejiang Laboratory(浙江实验室天体计算研究中心);Institute for Astronomy, School of Physics, Zhejiang University(浙江大学物理学院天体物理研究所);School of Physics and Physical Engineering, Qufu Normal University(曲阜师范大学物理与光电工程学院);Department of Astronomy, University of Science and Technology of China(中国科学技术大学天文学系);Department of Physics, The University of Hong Kong(香港大学物理系)
Flux Variations of Fast Radio Bursts and Their Persistent Radio Sources: Evidence for a Shared Progenitor
Central China Normal University(华中师范大学);Tsinghua University(清华大学);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);The Hong Kong Institute for Astronomy and Astrophysics, The University of Hong Kong(香港大学天体物理研究所);Department of Physics, The University of Hong Kong(香港大学物理系);Nevada Center for Astrophysics, University of Nevada, Las Vegas(内华达大学拉斯维加斯分校天体物理中心);Department of Physics and Astronomy, University of Nevada, Las Vegas(内华达大学拉斯维加斯分校物理与天文系)
Fast radio burst - persistent radio source systems III. The relation between PRS luminosity and FRB rotation measure
INAF-Istituto di Radio Astronomia (IRA)(意大利国家天体物理研究所射电天文研究所);Centre for Radio Astronomy Techniques and Technologies (RATT), Department of Physics and Electronics, Rhodes University(罗德斯大学物理与电子学院射电天文技术与方法中心);South African Radio Astronomy Observatory(南非射电天文观测台);INAF-Osservatorio Astronomico di Cagliari(意大利国家天体物理研究所卡利亚里天文台);Scuola Universitaria Superiore IUSS Pavia(帕维亚高等大学);INAF–Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano(意大利国家天体物理研究所米兰空间天体物理学与宇宙物理学研究所);Dipartimento di Fisica e Astronomia, Universitá di Bologna(博洛尼亚大学物理与天文学系);Dipartimento di Fisica, Università di Tr(特兰托大学物理系)
Milliarcsecond-scale spectrum of the persistent radio source associated with FRB 20190417A and constraints for FRB 20181030A
INAF – Istituto di Astrofisica e Planetologia Spaziali(意大利国家天体物理研究所空间天体物理与行星科学研究所);South-Western Institute for Astronomy Research, Yunnan University(云南大学西南天文研究所);INAF – Osservatorio di Astrofisica e Scienza dello Spazio di Bologna(意大利国家天体物理研究所博洛尼亚空间天体物理与科学观测站);Dipartimento di Fisica, Università della Calabria(卡拉布里亚大学物理系);Laboratori Nazionali di Frascati, INFN (Istituto Nazionale di Fisica Nucleare)(意大利国家核物理研究所弗朗卡蒂国家实验室);The Hong Kong Institute for Astronomy and Astrophysics, the University of Hong Kong(香港大学香港天文及天体物理研究所);Department of Physics, the University of Hong Kong(香港大学物理系)
The spectrum of the persistent radio source associated with FRB 20190417A
Istituto Nazionale di Astrofisica - Istituto di Radioastronomia(意大利国家天体物理研究所射电天文研究所);South African Radio Astronomy Observatory(南非射电天文台);Centre for Radio Astronomy Techniques and Technologies (RATT), Department of Physics and Electronics, Rhodes University(罗德斯大学物理与电子学院射电天文技术与方法中心);Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Cagliari(意大利国家天体物理研究所卡利亚里天文台);Dipartimento di Fisica e Astronomia - Università di Bologna(博洛尼亚大学物理与天文学系);Scuola Universitaria Superiore IUSS Pavia(帕维亚高等大学)
A MeerKAT search for persistent radio sources towards twenty-five localised Fast Radio Bursts
North-West University(西北大学);University of South Africa(南非大学);University of Nigeria(尼日利亚大学);National Institute for Theoretical and Computational Sciences (NITheCS)(国家理论与计算科学研究所);South African Radio Astronomy Observatory(南非射电天文台);Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester(曼彻斯特大学物理与天文学系乔德雷克天体物理学中心)