The High Time Resolution Universe Pulsar Survey - XIII. PSR J1757-1854, the most accelerated binary pulsar

被引：65

作者：

Cameron, A. D. ^{[1
]}

Champion, D. J. ^{[1
]}

Kramer, M. ^{[1
,2
]}

Bailes, M. ^{[3
,4
,5
]}

Barr, E. D. ^{[1
]}

Bassa, C. G. ^{[6
]}

Bhandari, S. ^{[3
,4
]}

Bhat, N. D. R. ^{[4
,7
]}

Burgay, M. ^{[8
]}

Burke-Spolaor, S. ^{[9
,10
]}

Eatough, R. P. ^{[1
]}

Flynn, C. M. L. ^{[3
]}

Freire, P. C. C. ^{[1
]}

Jameson, A. ^{[3
,4
]}

Johnston, S. ^{[11
]}

Karuppusamy, R. ^{[1
]}

Keith, M. J. ^{[2
]}

Levin, L. ^{[2
]}

Lorimer, D. R. ^{[9
]}

Lyne, A. G. ^{[2
]}

McLaughlin, M. A. ^{[9
]}

Ng, C. ^{[12
]}

Petroff, E. ^{[6
]}

Possenti, A. ^{[8
]}

Ridolfi, A. ^{[1
]}

Stappers, B. W. ^{[2
]}

van Straten, W. ^{[3
,4
,13
]}

Tauris, T. M. ^{[1
,14
]}

Tiburzi, C. ^{[1
,15
]}

Wex, N. ^{[1
]}

机构：

[1] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

[2] Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg,Oxford Rd, Manchester M13 9PL, Lancs, England

[3] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Mail H39,POB 218, Hawthorn, Vic 3122, Australia

[4] Swinburne Univ Technol, ARC Ctr Excellence All Sky Astron CAASTRO, Mail H30,POB 218, Hawthorn, Vic 3122, Australia

[5] Swinburne Univ Technol, ARC Ctr Excellence Gravitat Wave Discovery OzGrav, Mail H11,POB 218, Hawthorn, Vic 3122, Australia

[6] ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands

[7] Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia

[8] Osservatorio Astron Cagliari, INAF, Via Sci 5, I-09047 Selargius, CA, Italy

[9] West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA

[10] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

[11] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia

[12] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[13] Auckland Univ Technol, Inst Radio Astron & Space Res, Private Bag 92006, Auckland 1142, New Zealand

[14] Argelander Insitut Astron, Hugel 71, D-53121 Bonn, Germany

[15] Univ Bielefeld, Fak Phys, Postfach 100131, D-33501 Bielefeld, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 475卷 / 01期

基金：

英国科学技术设施理事会; 欧洲研究理事会; 美国国家科学基金会;

关键词：

gravitation; surveys; binaries: close; pulsars: individual: PSR J1757-1854; RELATIVISTIC CELESTIAL MECHANICS; GENERAL-RELATIVITY; DISCOVERY; GRAVITY; SYSTEMS; SEARCH; TESTS;

D O I：

10.1093/mnrasl/sly003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of PSR J1757-1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit with a neutron star (NS) companion. PSR J1757-1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including the strongest relativistic effects due to gravitational-wave damping, with a merger time of 76 Myr. Following a 1.6-yr timing campaign, we have measured five post-Keplerian parameters, yielding the two component masses (m(p) = 1.3384(9) M-circle dot and m(c) = 1.3946(9) M-circle dot) plus three tests of general relativity, which the theory passes. The larger mass of the NS companion provides important clues regarding the binary formation of PSR J1757-1854. With simulations suggesting 3-sigma measurements of both the contribution of Lense-Thirring precession to the rate of change of the semimajor axis and the relativistic deformation of the orbit within similar to 7-9 yr, PSR J1757-1854 stands out as a unique laboratory for new tests of gravitational theories.

引用

页码：L57 / L61

页数：5

共 35 条

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