We present the discovery of 37 pulsars from $\sim$ 20 years old archival data of the Parkes Multibeam Pulsar Survey using a new FFT-based search pipeline optimised for discovering narrow-duty cycle pulsars. When developing our pulsar search pipeline, we noticed that the signal-to-noise ratios of folded and optimised pulsars often exceeded that achieved in the spectral domain by a factor of two or greater, in particular for narrow duty cycle ones. Based on simulations, we verified that this is a feature of search codes that sum harmonics incoherently and found that many promising pulsar candidates are revealed when hundreds of candidates per beam with even with modest spectral signal-to-noise ratios of S/N$\sim$5--6 in higher-harmonic folds (up to 32 harmonics) are folded. Of these candidates, 37 were confirmed as new pulsars and a further 37 would have been new discoveries if our search strategies had been used at the time of their initial analysis. While 19 of these newly discovered pulsars have also been independently discovered in more recent pulsar surveys, 18 are exclusive to only the Parkes Multibeam Pulsar Survey data. Some of the notable discoveries include: PSRs J1635$-$47 and J1739$-$31, which show pronounced high-frequency emission; PSRs J1655$-$40 and J1843$-$08, which belong to the nulling/intermittent class of pulsars; and PSR J1636$-$51, which is an interesting binary system in a $\sim$0.75 d orbit and shows hints of eclipsing behaviour -- unusual given the 340 ms rotation period of the pulsar. Our results highlight the importance of reprocessing archival pulsar surveys and using refined search techniques to increase the normal pulsar population.
The Parkes multibeam pulsar survey: VII. Timing of four millisecond pulsars and the underlying spin period distribution of the Galactic millisecond pulsar population
A Study of Single Pulses in the Parkes Multibeam Pulsar Survey
我们重新处理了帕克斯多波束脉冲星巡天，寻找DM为5000 pc cm $^{-3}$，宽度为1秒的单脉冲。我们记录了来自264个已知恒星和14个旋转射电瞬变的单脉冲。我们为每个脉冲星制作了振幅分布，我们用对数正态分布、幂律尾和幂律函数除以指数函数来拟合，发现一些脉冲星以过量高能脉冲的形式显示出偏离对数正态分布的情况。我们发现，由幂律除以指数组成的函数比对数正态函数或幂律函数更适合大多数对数正态分布。对于在周期性搜索中检测到的类星体，我们从傅立叶变换计算它们的单脉冲信噪比与它们的信噪比的比率，并寻找该比率与类星体的物理参数之间的相关性。发现的唯一相关性是该比率与自旋周期之间的预期关系。拟合对数正态分布的脉冲幅度从RRAT显示出类似的行为，大多数RRAT。然而，这里似乎有两种不同的脉冲分布，较低能量的分布与噪声一致。两个RRATS处理的脉冲能量分布是一致的，发现正常的辐射源，这表明辐射源和RRATS有一个共同的发射机制，但其他因素影响每个源类的具体发射特性。
帕克斯多波束脉冲星巡天的再处理发现了五颗以前未知的脉冲星和几颗尚未确认的候选者。PSR J 0922 -52的周期为9.68 ms，DM为122.4 pc cm^-3。PSR J1147-66的周期为3.72 ms，DM为133.8 pc cm^-3。PSR J1227-6208的周期为34.53 ms，DM为362.6 pc cm^-3，处于一个6.7天的双星轨道上，桑顿等人在进行中的高分辨率帕克斯巡天中独立探测到了它，爱因斯坦@Home志愿者也在独立处理中探测到了它。PSR J1546-59的周期为7.80 ms，DM为168.3 pc cm^-3。PSR J1725-3853是一颗孤立的4.79 ms脉冲星，DM为158.2 pc cm^-3。这些候选人可能在早期的处理工作中被遗漏，因为他们的DM很高，周期很短，而且需要浏览的候选人数量很大。这些发现表明，在多波束勘测数据中，还有待发现更多的类星体。
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。
The High Time Resolution Universe Pulsar Survey-XIX. A coherent GPU accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane
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 turbulence in the ionized interstellar medium using young pulsars. I. Dispersion measure variations
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·潘内科克天文学研究所）；Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；Australia Telescope National Facility, CSIRO（澳大利亚望远镜国家设施，CSIRO）；LPC2E, OSUC, Univ Orleans, CNRS, CNES, Observatoire de Paris（奥尔良大学 LPC2E 实验室）；Space Science Division, Naval Research Laboratory（海军研究局空间科学分部）；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）
Modelling DSA, FAST and CRAFT surveys in a z-DM analysis and constraining a minimum FRB energy
International Centre for Radio Astronomy Research, Curtin University（国际射电天文研究中心，科廷大学）；Department of Astronomy and Astrophysics, University of California, Santa Cruz（天文学与天体物理学系，加州大学圣克鲁兹分校）；Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University（天体物理跨学科探索与研究中心（CIERA）及物理与天文学系，西北大学）；Centre for Astrophysics and Supercomputing, Swinburne University of Technology（天体物理学与超级计算中心，斯威本科技大学）；School of Mathematical and Physical Sciences, Macquarie University（数学与物理科学学院，麦考瑞大学）
Discovery of the Slowest Radio Pulsar in the Small Magellanic Cloud
Trinity College, Univeristy of Cambridge（剑桥大学三一学院）；Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（阿尔伯特·爱因斯坦研究所））；Leibniz Universität Hannover（汉诺威莱布尼茨大学）
Radio and Gamma-Ray Timing of a Newly Discovered Millisecond Pulsar
University of Wisconsin-Milwaukee（密尔沃基威斯康星大学）；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）；University of North Carolina at Chapel Hill（北卡罗来纳大学教堂山分校）
