News and views regarding PSR J1757-1854, a highly-relativistic binary pulsar

被引：0

作者：

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

Bailes, M. ^{[1
]}

Balakrishnan, V. ^{[2
]}

Champion, D. J. ^{[2
]}

Freire, P. C. C. ^{[2
]}

Kramer, M. ^{[2
]}

Wex, N. ^{[2
]}

Johnston, S. ^{[3
]}

Lyne, A. G. ^{[4
]}

Stappers, B. W. ^{[4
]}

McLaughlin, M. A. ^{[5
]}

Pol, N. ^{[5
]}

Wahl, H. ^{[5
]}

Ng, C. ^{[6
]}

Possenti, A. ^{[7
]}

Ridolfi, A. ^{[7
,8
]}

机构：

[1] Swinburne Univ Technol, ARC Ctr Excellence Gravitat Wave Discovery OzGrav, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

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

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

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

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

[6] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[7] Ist Nazl Astrofis INAF, Osservatorio Astron Cagliari, Via Sci 5, I-09047 Selargius, CA, Italy

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

来源：

SIXTEENTH MARCEL GROSSMANN MEETING | 2023年

关键词：

Gravitation; binaries: close; pulsars: individual: PSR J1757-1854; GENERAL-RELATIVITY; PRECESSION; DISCOVERY; GRAVITY; SYSTEM; TESTS;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We provide an update on the ongoing monitoring and study of the highly-relativistic double neutron star binary system PSR J1757-1854, a 21.5-ms pulsar in a highly eccentric, 4.4-hour orbit. The extreme nature of this pulsar's orbit allows it to probe a parameter space largely unexplored by other relativistic binary pulsars. For example, it displays one of the highest gravitational wave (GW) luminosities of any known binary pulsar, as well as the highest rate of orbital decay due to GW damping. PSR J1757-1854 is also notable in that it is an excellent candidate for exploring new tests of General Relativity and other gravitational theories, with possible measurements of both Lense-Thirring precession and relativistic orbital deformation (through the post-Keplerian parameter delta(theta)) anticipated within the next 3-5 years. Here we present a summary of the latest interim results from the ongoing monitoring of this pulsar as part of an international, multi-telescope campaign. This includes an update of the pulsar's long-term timing and post-Keplerian parameters, new constraints on the pulsar's proper motion and corresponding Shklovskii kinematic correction, and new limits on the pulsar's geodetic precession as determined by monitoring for secular changes in the pulse profile. We also highlight prospects for future work, including an updated timeline on new relativistic tests following the introduction of MeerKAT observations.

引用

页码：3774 / 3784

页数：11

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