The SUrvey for Pulsars and Extragalactic Radio Bursts V: Recent Discoveries and Full Timing Solutions
R. Spiewak, C. Flynn, S. Johnston, E. F. Keane, M. Bailes, E. D. Barr, S. Bhandari, M. Burgay, F. Jankowski, M. Kramer, V. Morello, A. Possenti, V. Venkatraman Krishnan
The SUrvey for Pulsars and Extragalactic Radio Bursts ran from 2014 April to 2019 August, covering a large fraction of the southern hemisphere at mid- to high-galactic latitudes, and consisting of 9-minute pointings taken with the 20-cm multibeam receiver on the Parkes Radio Telescope. Data up to 2017 September 21 have been searched using standard Fourier techniques, single-pulse searches, and Fast Folding Algorithm searches. We present 19 new discoveries, bringing the total to 27 discoveries in the programme, and we report the results of follow-up timing observations at Parkes for 26 of these pulsars, including the millisecond pulsar PSR J1421-4409; the faint, highly-modulated, slow pulsar PSR J1646-1910; and the nulling pulsar PSR J1337-4441. We present new timing solutions for 23 pulsars, and we report flux densities, modulation indices, and polarization properties.
The TRAPUM Large Magellanic Cloud pulsar survey with MeerKAT II: 12 new discoveries and timing solutions for 7 pulsars
The University of Cape Town(开普敦大学);University of Cape Town(开普敦大学);The University of Manchester(曼彻斯特大学);North-West University(西北大学);Max-Planck-Institut für Radioastronomie(马克斯·普朗克射电天文研究所);South African Radio Astronomy Observatory (SARAO)(南非射电天文台);INAF – Osservatorio Astronomico di Cagliari(意大利国家天体物理研究所卡利亚里天文台);LAPTh, CNRS, USMB(拉格朗日天体物理实验室,法国国家科学研究中心,尚贝里大学);Swinburne University of Technology(斯威本科技大学);OzGrav: The ARC Center of Excellence for Gravitational Wave Discovery(澳引力波发现卓越中心);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));Leibniz Universität Hannover(汉诺威莱布尼茨大学);Universität Bielefeld(比勒费尔德大学);National Astronomical Research Institute of Thailand(泰国国家天文研究所);National Institute for Theoretical and Computational Sciences, South Africa(南非理论与计算科学研究所)
The SUrvey for Pulsars and Extragalactic Radio Bursts II: New FRB discoveries and their follow-up
我们报告了在帕克斯射电望远镜正在进行的脉冲星和河外射电暴(SUPERB)调查中发现的四个快速射电暴(FRB):FRB 150610,151206,151230和160102。我们的实时发现使我们能够在12个对无线电,光学,X射线,伽马射线光子和中微子敏感的主要设施中进行广泛,快速的多信使跟踪,时间范围从爆发后一小时到几个月不等。没有对应的FRB被发现,我们提供了余辉光度的上限。没有发现FRB重复。所有FRB的正式拟合显示出散射的迹象,而它们的固有宽度在时间上是无法解决的。FRB 151206位于银河系低纬度,FRB 151230显示出尖锐的光谱截止,FRB 160102具有迄今为止探测到的最高色散测量值(DM = $2596.1\pm0.3$ pc cm $^{-3}$)。其中三个FRB具有高色散测量值(DM > $1500$ pc cm $^{-3}$),这有利于DM主要由星系际介质贡献的情况。Parkes FRB源计数分布与通量$>2$ Jymes的斜率为$α=-2.2^{+0.6}_{-1.2}$,并且仍然与欧几里德分布($α=-3/2$)一致。我们还发现,全天速率是$1.7^{+1.5}_{-0.9}\times10^3$ FRB/($4π$ sr)/天以上的$\sim2$ Jyms和目前没有强有力的证据,一个纬度依赖的FRB天空速率。
Timing and statistical analysis of single-pulse search pulsar discoveries from the PALFA survey
West Virginia University(西弗吉尼亚大学);Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)(马克斯·普朗克引力物理学研究所(爱因斯坦研究所));University of Wisconsin - Milwaukee(威斯康星大学密尔沃基分校);Cornell Center for Astrophysics and Planetary Science(康奈尔天体物理学与行星科学中心);South African Radio Astronomy Observatory(南非射电天文观测站);Franklin and Marshall College(富兰克林和马歇尔学院)
The High Time Resolution Universe Pulsar Survey -- XV: completion of the intermediate latitude survey with the discovery and timing of 25 further pulsars
Discovery and Timing Follow-Up of Two FAST-Discovered Pulsars from the FAST CRAFTS Survey
West Virginia University(西弗吉尼亚大学);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);School of Astronomy and Space Science, University of Chinese Academy of Sciences(中国科学院大学天文与空间科学学院);New Cornerstone Science Laboratory, Department of Astronomy, Tsinghua University(清华大学天文学系新基石科学实验室)
Three Pulsars Discovered by FAST in the Globular Cluster NGC 6517 with a Pulsar Candidate Sifting Code Based on Dispersion Measure to Signal-to-Noise Ratio Plots
本文报道了利用500米口径球面射电望远镜(FAST)在球状星团(GC)NGC6517中发现的三颗新双星,即NGC6517 E、F和G。NGC6517E、F和G的自旋周期分别为7.60、24.89和51.59 ms。它们的色散测量值分别为183.29、183.713和185.3 pc cm $^{-3}$,都比该星团中已知的双星略大。自旋周期导数为1 $\times$ × 10 $^{-18}$~s~s $^{-1}$,表明这些是再循环的质子。除了发现这三颗新的双星外,我们还更新了已知孤立双星NGC 6517 A、C和D的时间解。这些解与Lynch等人(2011)的解一致,并且具有较小的时间残差。从时间解来看,NGC 6517 A、B(位置来自Lynch et al. 2011)、C、E和F在天空中彼此非常接近,距离NGC 6517的光学核心只有几角秒。根据目前已发表和未发表的发现,NGC6517现在有9个天体,在拥有最多天体的GC中排名第5位$^{th}$。这些发现利用了FAST的高灵敏度和一种用于检查和过滤可能的候选信号的新算法。
Survey of compact sources for pulsars and exotic objects -- I. Overview and initial discoveries
National Centre for Radio Astrophysics (NCRA - TIFR)(国家射电天体物理中心(NCRA-TIFR));ASTRON, the Netherlands Institute for Radio Astronomy(荷兰射电天文研究所(ASTRON));International Centre for Radio Astronomy Research, Curtin University(科廷大学国际射电天文研究中心);Inter-University Centre for Astronomy and Astrophysics(大学间天文学与天体物理学中心);Department of Astrophysics/IMAPP, Radboud University(拉德堡德大学天体物理学系/IMAPP)
The High Time Resolution Universe Pulsar Survey - VII: discovery of five millisecond pulsars and the different luminosity properties of binary and isolated recycled pulsars
Pulsar Discoveries from the TRAPUM UHF Survey of Fermi-LAT Sources
The University of Manchester(曼彻斯特大学);National Astronomical Research Institute of Thailand(泰国国家天文研究所);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));Leibniz Universität Hannover(汉诺威莱布尼茨大学);INAF – Osservatorio Astronomico di Cagliari(意大利国家天体物理研究所卡利亚里天文台)
New Discoveries from the Arecibo 327 MHz Drift Pulsar Survey Radio Transient Search
我们提出了一个新的算法,用于识别分散的天体物理脉冲的martterrank。这样的脉冲通常从银河系恒星和旋转射电瞬变(RRAT)中检测到,它们是具有零星射电发射的中子星。最近,被称为快速射电暴(FRB)的孤立的、高度分散的脉冲已被确定为河外激变射电源的潜在特征,与射电星和RRAT不同。Arecterrank帮助我们在Arecibo 327 MHz漂移脉冲星巡天(AO327)的数据中发现了14颗Arecibo和8颗RRAT。新的RRAT具有范围为$23.5 - 86.6$ pc cm $^{-3}$的DM和范围为$0.172 - 3.901$ s的周期。新的调制器具有范围$23.6 - 133.3$ pc cm $^{-3}$中的DM和范围$1.249 - 5.012$ s中的周期,并且包括两个零器和一个模式切换对象。我们估计的全天空FRB率$10^5$天$^{-1}$的爆发宽度为10毫秒和流量密度$\gtrsim 83$毫焦耳的上限。所有新发现的DM都与银河系起源一致。在比较新的RRAT的统计数据与来自RRAT的来源时,我们发现这两组数据都来自同一时期的分布。与此相反,我们发现,新的恒星的周期分布是不同的周期分布的规范恒星的ATNF目录或AO327数据中发现的恒星的周期搜索。这表明集群排名是周期性搜索的有力补充,并发现了迄今为止在调查结果中代表性不足的脉冲星种群子集,因此在银河系脉…
Pulsar timing solutions for 17 pulsars at 150 MHz from the Irish LOFAR station
ASTRON, The Netherlands Institute for Radio Astronomy(荷兰射电天文研究所);School of Physics, Trinity College Dublin(都柏林三一学院物理学院);Astronomy & Astrophysics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies, DIAS Dunsink Observatory(都柏林高等研究院宇宙物理学院天文学与天体物理学系邓辛克天文台)
Discovery of Hidden Extragalactic Pulsars in the Parkes Archival Data
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));Leibniz Universität Hannover(汉诺威莱布尼茨大学);Center for Gravitation, Cosmology, and Astrophysics, Department of Physics and Astronomy, University of Wisconsin-Milwaukee(威斯康星大学密尔沃基分校物理与天文学系引力、宇宙学和天体物理学中心);Centre for Astrophysics and Supercomputing, Swinburne University of Technology(斯威本科技大学天体物理学与超级计算中心);Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav)(澳大利亚研究理事会引力波发现卓越中心(OzGrav));Department of Physics and Astronomy, Franklin and Marshall College(富兰克林和马歇尔学院物理与天文学系);Department of Physics and Astronomy, West Virginia University(西弗吉尼亚大学物理与天文学系);Center for Gravitational Waves and Cosmology, West Virginia University(西弗吉尼亚大学引力波与宇宙学中心);School of Engineering, Murray State University(默里州立大学工程学院)
Probing Picohertz Gravitational Waves with Pulsars
Yale University(耶鲁大学);University of Maryland(马里兰大学);The Johns Hopkins University(约翰斯·霍普金斯大学);The University of Texas at Austin(德克萨斯大学奥斯汀分校);University of Florida(佛罗里达大学)
Representation Learning for Time-Domain High-Energy Astrophysics: Discovery of Extragalactic Fast X-ray Transient XRT 200515
Institute for Computational and Mathematical Engineering, Stanford University(斯坦福大学计算与数学工程研究所);University of Cambridge(剑桥大学);Center for Astrophysics | Harvard & Smithsonian(哈佛-史密森天体物理中心);INAF – Osservatorio Astrofisico di Torino(意大利国家天体物理研究所都灵天文台);The University of Sydney(悉尼大学)