Disc-jet coupling in low-luminosity accreting neutron stars
MetadataShow full item record
Funding and Sponsorship
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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 ? 10 36 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.
Showing items related by title, author, creator and subject.
Van Den Eijnden, J.; Degenaar, N.; Russell, T.D.; Hernández Santisteban, J.V.; Wijnands, R.; Miller-Jones, James ; Rouco Escorial, A.; Sivakoff, G.R. (2019)© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. Transient Be/X-ray binary systems, wherein a compact object accretes from a Be-companion star, can show giant and ...
Gusinskaia, N.V.; Hessels, J.W.T.; Degenaar, N.; Deller, A.T.; Miller-Jones, James ; Archibald, A.M.; Heinke, C.O.; Moldón, J.; Patruno, A.; Tomsick, J.A.; Wijnands, R. (2020)© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society Aql X-1 is one of the best-studied neutron star low-mass X-ray binaries. It was previously targeted using quasi-simultaneous ...
The evolving jet spectrum of the neutron star X-ray binary Aql X-1 in transitional states during its 2016 outburstDíaz Trigo, M.; Altamirano, D.; Dinçer, T.; Miller-Jones, James; Russell, D.; Sanna, A.; Bailyn, C.; Lewis, F.; Migliari, S.; Rahoui, F. (2018)We report on quasi-simultaneous observations from radio to X-ray frequencies of the neutron star X-ray binary Aql X-1 over accretion state transitions during its 2016 outburst. All the observations show radio to millimetre ...