HYDRA: an HPC facility for Pulsar Astrophysics

HYDRA：脉冲星天体物理学的 HPC 设施

• 批准号: ST/F002874/1
• 负责人: Benjamin Stappers
• 金额: $ 35.88万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FF002874%2F1
• 关键词: HYDRA; HPC; facility; Pulsar; Astrophysics

We request funds for the acquisition of a powerful supercomputer in order to help in the search for the theory of gravity that describes the evolution of the Universe as well as the movement of planets. So far, Einstein's theory of general relativity (GR) has passed all observational tests, but recent results in cosmology and the incompatibility of GR with quantum mechanics suggest that GR may fail to describe the gravitational interaction of the macroscopic world under some extreme conditions. In an attempt to determine these conditions, ever more stringent tests of GR need to be conducted, and the requested computing is capable of finding the corresponding cosmic laboratories: The requested computing power is required to search survey data obtained by the Lovell telescope and others of the world's largest radio-telescopes for radio pulsars. Pulsars are rotating neutron stars emitting radio beams along their magnetic axes and hence act like a cosmic lighthouses that sweep beams of radio light through the Universe as they rotate. A pulsar is therefore a cosmic clock which sends us its ``ticks'' with a regularity that in many cases rivals that of the best atomic clocks on Earth, as the pulsar is essentially a massive flywheel in empty space. We can use these clocks to put Einstein's theory and other theories of gravity to the test by finding them in binary systems with massive companions such as other neutron stars or black holes, and by studying how these clocks move in the 'space-time' distorted by a massive companion. The requested computing facility will be capable of finding the most extreme binary systems yet known, including classes of potentially existing pulsar - black hole systems -- the ultimate laboratories for gravitational physics.

我们请求资金购买一台强大的超级计算机，以帮助寻找描述宇宙演化和行星运动的引力理论。到目前为止，爱因斯坦的广义相对论（GR）已经通过了所有的观测检验，但最近宇宙学的结果以及GR与量子力学的不相容性表明，在某些极端条件下，GR可能无法描述宏观世界的引力相互作用。为了确定这些条件，需要进行更严格的GR测试，并且所要求的计算能力能够找到相应的宇宙实验室：所要求的计算能力需要搜索由洛弗尔望远镜和世界上最大的射电望远镜获得的调查数据。脉冲星是旋转的中子星，沿着它们的磁轴发射无线电波束，因此就像一个宇宙灯塔，当它们旋转时，无线电波束扫过宇宙。因此，脉冲星是一个宇宙时钟，它以一种规律性向我们发送“滴答声”，在许多情况下，这种规律性可以与地球上最好的原子钟相媲美，因为脉冲星本质上是一个巨大的飞轮。我们可以用这些时钟来检验爱因斯坦的理论和其他引力理论，方法是在有大质量伴星（如其他中子星或黑洞）的双星系统中找到它们，并研究这些时钟如何在被大质量伴星扭曲的“时空”中运动。所要求的计算设施将能够找到迄今所知的最极端的双星系统，包括潜在存在的脉冲星-黑洞系统的类别-引力物理学的终极实验室。

项目成果

The High Time Resolution Universe Pulsar Survey - VI. An artificial neural network and timing of 75 pulsars

• DOI: 10.1111/j.1365-2966.2012.22042.x
• 发表时间: 2012-09
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: S. Bates;S. Bates;M. Bailes;B. Barsdell;N. Bhat;M. Burgay;S. Burke-Spolaor;D. Champion;P. Coster;N. D'amico;A. Jameson;S. Johnston;M. Keith;M. Kramer;L. Levin;L. Levin;A. Lyne;S. Milia;S. Milia;C. Ng;C. Nietner;A. Possenti;B. Stappers;D. Thornton;W. Straten

The High Time Resolution Universe survey - XI. Discovery of five recycled pulsars and the optical detectability of survey white dwarf companions

• DOI: 10.1093/mnras/stu2350
• 发表时间: 2014-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: S. Bates;D. Thornton;M. Bailes;E. Barr;C. Bassa;N. Bhat;M. Burgay;S. Burke-Spolaor;D. Champion;Chris Flynn;A. Jameson;S. Johnston;Michael Keith;M. Kramer;L. Levin;A. Lyne;S. Milia;C. Ng;E. Petroff;A. Possenti;B. Stappers;W. Straten;C. Tiburzi

THE GMRT HIGH RESOLUTION SOUTHERN SKY SURVEY FOR PULSARS AND TRANSIENTS. I. SURVEY DESCRIPTION AND INITIAL DISCOVERIES

• DOI: 10.3847/0004-637x/817/2/130
• 发表时间: 2015-09
• 期刊: The Astrophysical Journal
• 作者: B. Bhattacharyya;S. Cooper;M. Malenta;J. Roy;J. Chengalur;M. Keith;S. Kudale;M. Mclaughlin

LEAP: the large European array for pulsars

• DOI: 10.1093/mnras/stv2755
• 发表时间: 2015-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: C. Bassa;G. Janssen;R. Karuppusamy;R. Karuppusamy;M. Kramer;Kejia Lee;Kang Liu;J. McKee;D. Perrodin;M. Purver;S. Sanidas;R. Smits;B. Stappers