Disc-jet coupling in low-luminosity accreting neutron stars

V. Tudor; J. C.A. Miller-Jones; A. Patruno; C. R. D'Angelo; P. G. Jonker; D. M. Russell; T. D. Russell; F. Bernardini; F. Lewis; A. T. Deller; J. W.T. Hessels; S. Migliari; R. M. Plotkin; R. Soria; R. Wijnands

doi:10.1093/mnras/stx1168

Disc-jet coupling in low-luminosity accreting neutron stars

V. Tudor, J. C.A. Miller-Jones, A. Patruno, C. R. D'Angelo, P. G. Jonker, D. M. Russell, T. D. Russell, F. Bernardini, F. Lewis, A. T. Deller, J. W.T. Hessels, S. Migliari, R. M. Plotkin, R. Soria, R. Wijnands

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards quiescence. To explore whether neutron stars power jets at low accretion rates (L_X ≲ 10³⁶ erg s^-1), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511-3057, SAX J1808.4-3658 and IGR J00291+5934) during their outbursts in 2015, and of the non-pulsing neutron starCenX-4 in quiescence (2015) and in outburst (1979). We did not detect the radio counterpart of IGR J17511-3057 in outburst or of Cen X-4 in quiescence, but did detect IGR J00291+5934 and SAX J1808.4-3658, showing that at least some neutron stars launch jets at low accretion rates. While the radio and X-ray emission in IGR J00291+5934 seem to be tightly correlated, the relationship in SAX J1808.4-3658 is more complicated.We find that SAX J1808.4-3658 produces jets during the reflaring tail, and we explore a toy model to ascertain whether the radio emission could be attributed to the onset of a strong propeller. The lack of a universal radio/X-ray correlation, with different behaviours in different neutron star systems (with various radio/X-ray correlations; some being radio faint and others not), points at distinct disc-jet interactions in individual sources, while always being fainter in the radio band than black holes at the same X-ray luminosity.

Original language	English (US)
Pages (from-to)	324-339
Number of pages	16
Journal	Monthly Notices of the Royal Astronomical Society
Volume	470
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stx1168
State	Published - Sep 1 2017

Keywords

Accretion
Accretion discs
ISM: jets and outflows
Radio continuum: transients
Stars: neutron
X-rays: binaries

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Tudor, V., Miller-Jones, J. C. A., Patruno, A., D'Angelo, C. R., Jonker, P. G., Russell, D. M., Russell, T. D., Bernardini, F., Lewis, F., Deller, A. T., Hessels, J. W. T., Migliari, S., Plotkin, R. M., Soria, R., & Wijnands, R. (2017). Disc-jet coupling in low-luminosity accreting neutron stars. Monthly Notices of the Royal Astronomical Society, 470(1), 324-339. https://doi.org/10.1093/mnras/stx1168

Disc-jet coupling in low-luminosity accreting neutron stars. / Tudor, V.; Miller-Jones, J. C.A.; Patruno, A.; D'Angelo, C. R.; Jonker, P. G.; Russell, D. M.; Russell, T. D.; Bernardini, F.; Lewis, F.; Deller, A. T.; Hessels, J. W.T.; Migliari, S.; Plotkin, R. M.; Soria, R.; Wijnands, R.

In: Monthly Notices of the Royal Astronomical Society, Vol. 470, No. 1, 01.09.2017, p. 324-339.

Research output: Contribution to journal › Article › peer-review

Tudor, V, Miller-Jones, JCA, Patruno, A, D'Angelo, CR, Jonker, PG, Russell, DM, Russell, TD, Bernardini, F, Lewis, F, Deller, AT, Hessels, JWT, Migliari, S, Plotkin, RM, Soria, R & Wijnands, R 2017, 'Disc-jet coupling in low-luminosity accreting neutron stars', Monthly Notices of the Royal Astronomical Society, vol. 470, no. 1, pp. 324-339. https://doi.org/10.1093/mnras/stx1168

Tudor, V. ; Miller-Jones, J. C.A. ; Patruno, A. ; D'Angelo, C. R. ; Jonker, P. G. ; Russell, D. M. ; Russell, T. D. ; Bernardini, F. ; Lewis, F. ; Deller, A. T. ; Hessels, J. W.T. ; Migliari, S. ; Plotkin, R. M. ; Soria, R. ; Wijnands, R. / Disc-jet coupling in low-luminosity accreting neutron stars. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 470, No. 1. pp. 324-339.

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title = "Disc-jet coupling in low-luminosity accreting neutron stars",

abstract = "In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards quiescence. To explore whether neutron stars power jets at low accretion rates (LX ≲ 1036 erg s-1), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511-3057, SAX J1808.4-3658 and IGR J00291+5934) during their outbursts in 2015, and of the non-pulsing neutron starCenX-4 in quiescence (2015) and in outburst (1979). We did not detect the radio counterpart of IGR J17511-3057 in outburst or of Cen X-4 in quiescence, but did detect IGR J00291+5934 and SAX J1808.4-3658, showing that at least some neutron stars launch jets at low accretion rates. While the radio and X-ray emission in IGR J00291+5934 seem to be tightly correlated, the relationship in SAX J1808.4-3658 is more complicated.We find that SAX J1808.4-3658 produces jets during the reflaring tail, and we explore a toy model to ascertain whether the radio emission could be attributed to the onset of a strong propeller. The lack of a universal radio/X-ray correlation, with different behaviours in different neutron star systems (with various radio/X-ray correlations; some being radio faint and others not), points at distinct disc-jet interactions in individual sources, while always being fainter in the radio band than black holes at the same X-ray luminosity.",

keywords = "Accretion, Accretion discs, ISM: jets and outflows, Radio continuum: transients, Stars: neutron, X-rays: binaries",

author = "V. Tudor and Miller-Jones, {J. C.A.} and A. Patruno and D'Angelo, {C. R.} and Jonker, {P. G.} and Russell, {D. M.} and Russell, {T. D.} and F. Bernardini and F. Lewis and Deller, {A. T.} and Hessels, {J. W.T.} and S. Migliari and Plotkin, {R. M.} and R. Soria and R. Wijnands",

note = "Funding Information: We thank the anonymous referee for constructive feedback that improved the manuscript. VT acknowledges a CSIRS scholarship fromCurtin University. JCAM-J is the recipient of an Australian Research Council Future Fellowship (FT140101082). AP and CRD'A are financially supported by an NWO Vidi grant (PI: Patruno). PGJ acknowledges funding from the European Research Council under ERC Consolidator Grant agreement number 647208.TDRacknowledges support from the Netherlands Organisation for Scientific Research (NWO) Veni Fellowship, grant number 639.041.646. RMP acknowledges support from Curtin University through the Peter Curran Memorial Fellowship. RW is supported by an NWO Top Grant, Module 1. This research has made use of NASA's Astrophysics Data System, and of data supplied by the UK Swift Science Data Centre at the University of Leicester. The International Centre for Radio Astronomy Research is a joint venture between Curtin University and the University of Western Australia, funded by the state government of Western Australia and the joint venture partners. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The Faulkes Telescopes are maintained and operated by Las Cumbres Observatory (LCO).",

year = "2017",

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doi = "10.1093/mnras/stx1168",

language = "English (US)",

volume = "470",

pages = "324--339",

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T1 - Disc-jet coupling in low-luminosity accreting neutron stars

AU - Tudor, V.

AU - Miller-Jones, J. C.A.

AU - Patruno, A.

AU - D'Angelo, C. R.

AU - Jonker, P. G.

AU - Russell, D. M.

AU - Russell, T. D.

AU - Bernardini, F.

AU - Lewis, F.

AU - Deller, A. T.

AU - Hessels, J. W.T.

AU - Migliari, S.

AU - Plotkin, R. M.

AU - Soria, R.

AU - Wijnands, R.

N1 - Funding Information: We thank the anonymous referee for constructive feedback that improved the manuscript. VT acknowledges a CSIRS scholarship fromCurtin University. JCAM-J is the recipient of an Australian Research Council Future Fellowship (FT140101082). AP and CRD'A are financially supported by an NWO Vidi grant (PI: Patruno). PGJ acknowledges funding from the European Research Council under ERC Consolidator Grant agreement number 647208.TDRacknowledges support from the Netherlands Organisation for Scientific Research (NWO) Veni Fellowship, grant number 639.041.646. RMP acknowledges support from Curtin University through the Peter Curran Memorial Fellowship. RW is supported by an NWO Top Grant, Module 1. This research has made use of NASA's Astrophysics Data System, and of data supplied by the UK Swift Science Data Centre at the University of Leicester. The International Centre for Radio Astronomy Research is a joint venture between Curtin University and the University of Western Australia, funded by the state government of Western Australia and the joint venture partners. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The Faulkes Telescopes are maintained and operated by Las Cumbres Observatory (LCO).

PY - 2017/9/1

Y1 - 2017/9/1

N2 - In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards quiescence. To explore whether neutron stars power jets at low accretion rates (LX ≲ 1036 erg s-1), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511-3057, SAX J1808.4-3658 and IGR J00291+5934) during their outbursts in 2015, and of the non-pulsing neutron starCenX-4 in quiescence (2015) and in outburst (1979). We did not detect the radio counterpart of IGR J17511-3057 in outburst or of Cen X-4 in quiescence, but did detect IGR J00291+5934 and SAX J1808.4-3658, showing that at least some neutron stars launch jets at low accretion rates. While the radio and X-ray emission in IGR J00291+5934 seem to be tightly correlated, the relationship in SAX J1808.4-3658 is more complicated.We find that SAX J1808.4-3658 produces jets during the reflaring tail, and we explore a toy model to ascertain whether the radio emission could be attributed to the onset of a strong propeller. The lack of a universal radio/X-ray correlation, with different behaviours in different neutron star systems (with various radio/X-ray correlations; some being radio faint and others not), points at distinct disc-jet interactions in individual sources, while always being fainter in the radio band than black holes at the same X-ray luminosity.

AB - In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards quiescence. To explore whether neutron stars power jets at low accretion rates (LX ≲ 1036 erg s-1), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511-3057, SAX J1808.4-3658 and IGR J00291+5934) during their outbursts in 2015, and of the non-pulsing neutron starCenX-4 in quiescence (2015) and in outburst (1979). We did not detect the radio counterpart of IGR J17511-3057 in outburst or of Cen X-4 in quiescence, but did detect IGR J00291+5934 and SAX J1808.4-3658, showing that at least some neutron stars launch jets at low accretion rates. While the radio and X-ray emission in IGR J00291+5934 seem to be tightly correlated, the relationship in SAX J1808.4-3658 is more complicated.We find that SAX J1808.4-3658 produces jets during the reflaring tail, and we explore a toy model to ascertain whether the radio emission could be attributed to the onset of a strong propeller. The lack of a universal radio/X-ray correlation, with different behaviours in different neutron star systems (with various radio/X-ray correlations; some being radio faint and others not), points at distinct disc-jet interactions in individual sources, while always being fainter in the radio band than black holes at the same X-ray luminosity.

KW - Accretion

KW - Accretion discs

KW - ISM: jets and outflows

KW - Radio continuum: transients

KW - Stars: neutron

KW - X-rays: binaries

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