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, Dave Russell, T. D. Russell, F. Bernardini, F. Lewis, A. T. Deller, J. W.T. Hessels, S. Migliari, R. M. Plotkin, R. Soria, R. Wijnands

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Article numberstx1168
Pages (from-to)324-339
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume470
Issue number1
DOIs
StatePublished - Sep 1 2017

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neutron stars
luminosity
radio
outburst
x rays
accretion
propellers
radio emission
pulsars
erg
neutrons

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

Cite this

Tudor, V., Miller-Jones, J. C. A., Patruno, A., D'Angelo, C. R., Jonker, P. G., Russell, D., ... Wijnands, R. (2017). Disc-jet coupling in low-luminosity accreting neutron stars. Monthly Notices of the Royal Astronomical Society, 470(1), 324-339. [stx1168]. 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, Dave; 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, stx1168, 01.09.2017, p. 324-339.

Research output: Contribution to journalArticle

Tudor, V, Miller-Jones, JCA, Patruno, A, D'Angelo, CR, Jonker, PG, Russell, D, 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, stx1168, pp. 324-339. https://doi.org/10.1093/mnras/stx1168
Tudor V, Miller-Jones JCA, Patruno A, D'Angelo CR, Jonker PG, Russell D et al. Disc-jet coupling in low-luminosity accreting neutron stars. Monthly Notices of the Royal Astronomical Society. 2017 Sep 1;470(1):324-339. stx1168. https://doi.org/10.1093/mnras/stx1168
Tudor, V. ; Miller-Jones, J. C.A. ; Patruno, A. ; D'Angelo, C. R. ; Jonker, P. G. ; Russell, Dave ; 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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