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The International Pulsar Timing Array: First data release
文献类型：期刊论文
| 作者 | Verbiest, J. P. W.1,2; Lentati, L.3; Hobbs, G.4; van Haasteren, R.5; Demorest, P. B.6; Janssen, G. H.7; Wang, J. -B.8 ; Desvignes, G.2; Caballero, R. N.2; Keith, M. J.9
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2016-05-11 |
| 卷号 | 458期号:2页码:1267-1288 |
| ISSN号 | 0035-8711 |
| 关键词 | methods: data analysis pulsars: general |
| 英文摘要 | The highly stable spin of neutron stars can be exploited for a variety of (astro)physical investigations. In particular, arrays of pulsars with rotational periods of the order of milliseconds can be used to detect correlated signals such as those caused by gravitational waves. Three such 'pulsar timing arrays' (PTAs) have been set up around the world over the past decades and collectively form the 'International' PTA (IPTA). In this paper, we describe the first joint analysis of the data from the three regional PTAs, i.e. of the first IPTA data set. We describe the available PTA data, the approach presently followed for its combination and suggest improvements for future PTA research. Particular attention is paid to subtle details (such as underestimation of measurement uncertainty and long-period noise) that have often been ignored but which become important in this unprecedentedly large and inhomogeneous data set. We identify and describe in detail several factors that complicate IPTA research and provide recommendations for future pulsar timing efforts. The first IPTA data release presented here (and available online) is used to demonstrate the IPTA's potential of improving upon gravitational-wave limits placed by individual PTAs by a factor of similar to 2 and provides a 2 sigma limit on the dimensionless amplitude of a stochastic gravitational-wave background of 1.7 x 10(-15) at a frequency of 1 yr(-1). This is 1.7 times less constraining than the limit placed by Shannon et al., due mostly to the more recent, high-quality data they used. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374569600010 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1391]  |
| 专题 | 脉冲星研究团组 新疆天文台_射电天文研究室 新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 |
| 作者单位 | 1.Univ Bielefeld, Fak Phys, Postfach 100131, D-33501 Bielefeld, Germany 2.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 3.Univ Cambridge, Cavendish Lab, Astrophys Grp, JJ Thomson Ave, Cambridge CB3 0HE, England 4.Australia Telescope Natl Facil, CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia 5.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr,M-S 67-201, Pasadena, CA 91109 USA 6.Natl Radio Astron Observ, POB O, Socorro, NM 87801 USA 7.Netherlands Inst Radio Astron, ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands 8.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Xinjiang, Peoples R China 9.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England 10.NASA, Goddard Space Flight Ctr, USRA, Ctr Res & Explorat Space Sci & Technol, Code 662, Greenbelt, MD 20771 USA |
| 推荐引用方式 GB/T 7714 | Verbiest, J. P. W.,Lentati, L.,Hobbs, G.,et al. The International Pulsar Timing Array: First data release[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,458(2):1267-1288. |
| APA | Verbiest, J. P. W..,Lentati, L..,Hobbs, G..,van Haasteren, R..,Demorest, P. B..,...&Zhu, X. -J..(2016).The International Pulsar Timing Array: First data release.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,458(2),1267-1288. |
| MLA | Verbiest, J. P. W.,et al."The International Pulsar Timing Array: First data release".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 458.2(2016):1267-1288. |
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