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

A. D. Cameron; D. J. Champion; M. Kramer; M. Bailes; E. D. Barr; C. G. Bassa; S. Bhandari; N. D. R. Bhat; M. Burgay; S. Burke-Spolaor; R. P. Eatough; C. M. L. Flynn; P. C. C. Freire; A. Jameson; S. Johnston; R. Karuppusamy; M. J. Keith; L. Levin; D. R. Lorimer; A. G. Lyne; M. A. McLaughlin; C. Ng; E. Petroff; A. Possenti; A. Ridolfi; B. W. Stappers; W. van Straten; T. M. Tauris; C. Tiburzi; N. Wex

doi:10.1093/mnrasl/sly003

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

A. D. Cameron, D. J. Champion, M. Kramer, M. Bailes, E. D. Barr, C. G. Bassa, S. Bhandari, N. D. R. Bhat, M. Burgay, S. Burke-Spolaor, R. P. Eatough, C. M. L. Flynn, P. C. C. Freire, A. Jameson, S. Johnston, R. Karuppusamy, M. J. Keith, L. Levin, D. R. Lorimer, A. G. LyneM. A. McLaughlin, C. Ng, E. Petroff, A. Possenti, A. Ridolfi, B. W. Stappers, W. van Straten, T. M. Tauris, C. Tiburzi, N. Wex

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Abstract

We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including the strongest relativistic effects due to gravitational-wave (GW) damping, with a merger time of 76 Myr. Following a 1.6-yr timing campaign, we have measured five post-Keplerian (PK) parameters, yielding the two component masses ($m_\text{p}=1.3384(9)\,\text{M}_\odot$ and $m_\text{c}=1.3946(9)\,\text{M}_\odot$) plus three tests of general relativity (GR), 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 semi-major axis and the relativistic deformation of the orbit within $\sim7-9$ years, PSR J1757$-$1854 stands out as a unique laboratory for new tests of gravitational theories.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
DOIs	https://doi.org/10.1093/mnrasl/sly003
Publication status	Published - 9 Jan 2018

Keywords

astro-ph.HE
astro-ph.SR

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10.1093/mnrasl/sly003

1711.07697v2Accepted author manuscript, 543 KB

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Cameron, A. D., Champion, D. J., Kramer, M., Bailes, M., Barr, E. D., Bassa, C. G., Bhandari, S., Bhat, N. D. R., Burgay, M., Burke-Spolaor, S., Eatough, R. P., Flynn, C. M. L., Freire, P. C. C., Jameson, A., Johnston, S., Karuppusamy, R., Keith, M. J., Levin, L., Lorimer, D. R., ... Wex, N. (2018). The High Time Resolution Universe Pulsar Survey - XIII. PSR J1757-1854, the most accelerated binary pulsar. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnrasl/sly003

@article{fee87c6f82d24d1cbef0de79d4381479,

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

abstract = "We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including the strongest relativistic effects due to gravitational-wave (GW) damping, with a merger time of 76 Myr. Following a 1.6-yr timing campaign, we have measured five post-Keplerian (PK) parameters, yielding the two component masses ($m_\text{p}=1.3384(9)\,\text{M}_\odot$ and $m_\text{c}=1.3946(9)\,\text{M}_\odot$) plus three tests of general relativity (GR), 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 semi-major axis and the relativistic deformation of the orbit within $\sim7-9$ years, PSR J1757$-$1854 stands out as a unique laboratory for new tests of gravitational theories.",

keywords = "astro-ph.HE, astro-ph.SR",

author = "Cameron, {A. D.} and Champion, {D. J.} and M. Kramer and M. Bailes and Barr, {E. D.} and Bassa, {C. G.} and S. Bhandari and Bhat, {N. D. R.} and M. Burgay and S. Burke-Spolaor and Eatough, {R. P.} and Flynn, {C. M. L.} and Freire, {P. C. C.} and A. Jameson and S. Johnston and R. Karuppusamy and Keith, {M. J.} and L. Levin and Lorimer, {D. R.} and Lyne, {A. G.} and McLaughlin, {M. A.} and C. Ng and E. Petroff and A. Possenti and A. Ridolfi and Stappers, {B. W.} and Straten, {W. van} and Tauris, {T. M.} and C. Tiburzi and N. Wex",

note = "6 pages, 2 figures, 2 tables",

year = "2018",

month = jan,

day = "9",

doi = "10.1093/mnrasl/sly003",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

}

Cameron, AD, Champion, DJ, Kramer, M, Bailes, M, Barr, ED, Bassa, CG, Bhandari, S, Bhat, NDR, Burgay, M, Burke-Spolaor, S, Eatough, RP, Flynn, CML, Freire, PCC, Jameson, A, Johnston, S, Karuppusamy, R, Keith, MJ , Levin, L, Lorimer, DR, Lyne, AG, McLaughlin, MA, Ng, C, Petroff, E, Possenti, A, Ridolfi, A, Stappers, BW, Straten, WV, Tauris, TM, Tiburzi, C & Wex, N 2018, 'The High Time Resolution Universe Pulsar Survey - XIII. PSR J1757-1854, the most accelerated binary pulsar', Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnrasl/sly003

TY - JOUR

T1 - The High Time Resolution Universe Pulsar Survey - XIII. PSR J1757-1854, the most accelerated binary pulsar

AU - Cameron, A. D.

AU - Champion, D. J.

AU - Kramer, M.

AU - Bailes, M.

AU - Barr, E. D.

AU - Bassa, C. G.

AU - Bhandari, S.

AU - Bhat, N. D. R.

AU - Burgay, M.

AU - Burke-Spolaor, S.

AU - Eatough, R. P.

AU - Flynn, C. M. L.

AU - Freire, P. C. C.

AU - Jameson, A.

AU - Johnston, S.

AU - Karuppusamy, R.

AU - Keith, M. J.

AU - Levin, L.

AU - Lorimer, D. R.

AU - Lyne, A. G.

AU - McLaughlin, M. A.

AU - Ng, C.

AU - Petroff, E.

AU - Possenti, A.

AU - Ridolfi, A.

AU - Stappers, B. W.

AU - Straten, W. van

AU - Tauris, T. M.

AU - Tiburzi, C.

AU - Wex, N.

N1 - 6 pages, 2 figures, 2 tables

PY - 2018/1/9

Y1 - 2018/1/9

N2 - We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including the strongest relativistic effects due to gravitational-wave (GW) damping, with a merger time of 76 Myr. Following a 1.6-yr timing campaign, we have measured five post-Keplerian (PK) parameters, yielding the two component masses ($m_\text{p}=1.3384(9)\,\text{M}_\odot$ and $m_\text{c}=1.3946(9)\,\text{M}_\odot$) plus three tests of general relativity (GR), 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 semi-major axis and the relativistic deformation of the orbit within $\sim7-9$ years, PSR J1757$-$1854 stands out as a unique laboratory for new tests of gravitational theories.

AB - We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including the strongest relativistic effects due to gravitational-wave (GW) damping, with a merger time of 76 Myr. Following a 1.6-yr timing campaign, we have measured five post-Keplerian (PK) parameters, yielding the two component masses ($m_\text{p}=1.3384(9)\,\text{M}_\odot$ and $m_\text{c}=1.3946(9)\,\text{M}_\odot$) plus three tests of general relativity (GR), 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 semi-major axis and the relativistic deformation of the orbit within $\sim7-9$ years, PSR J1757$-$1854 stands out as a unique laboratory for new tests of gravitational theories.

KW - astro-ph.HE

KW - astro-ph.SR

U2 - 10.1093/mnrasl/sly003

DO - 10.1093/mnrasl/sly003

M3 - Article

SN - 1365-2966

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

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

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