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dc.contributor.authorVan Den Eijnden, J.
dc.contributor.authorDegenaar, N.
dc.contributor.authorRussell, T.D.
dc.contributor.authorHernández Santisteban, J.V.
dc.contributor.authorWijnands, R.
dc.contributor.authorMiller-Jones, James
dc.contributor.authorRouco Escorial, A.
dc.contributor.authorSivakoff, G.R.
dc.date.accessioned2020-07-22T07:21:29Z
dc.date.available2020-07-22T07:21:29Z
dc.date.issued2019
dc.identifier.citationVan Den Eijnden, J. and Degenaar, N. and Russell, T.D. and Hernández Santisteban, J.V. and Wijnands, R. and Miller-Jones, J.C.A. and Rouco Escorial, A. et al. 2019. A re-establishing jet during an X-ray re-brightening of the Be/X-ray binary Swift J0243.6+6124. Monthly Notices of the Royal Astronomical Society. 483 (4): pp. 4628-4638.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/80101
dc.identifier.doi10.1093/mnras/sty3479
dc.description.abstract

© 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 periastron outbursts. During the decay of their giant outbursts, some Be/X-ray binaries also show X-ray re-brightenings, the origin of which is not understood. Recently, we presented the discovery of a jet from a neutron star Be/X-ray binary, observed during the giant outburst of Swift J0243.6+6124. Here, we present continued radio monitoring of its 2017/2018 giant outburst decay and a re-brightening of this source. During the former, we observe a radio flare with a steep radio spectrum, possibly caused by interactions between discrete ejecta colliding with the pre-existing jet or the surrounding medium. During the X-ray re-brightening, we observe the radio jet turning on and off within days. Surprisingly, this re-establishing jet is as bright in radio as at the peak of the super-Eddington giant outburst, despite more than 2 orders of magnitude lower X-ray luminosity. In addition, the jet is only observed when the X-ray luminosity exceeds approximately 2× 10 36 (D/5 kpc) 2 erg s -1. We discuss how such an X-ray threshold for jet launching might be related to the presence of a magnetic centrifugal barrier at lower mass accretion rates. We also discuss the implications of our results for the launch of jets from strongly magnetized neutron stars, and explore future avenues to exploit the new possibility of coordinated X-ray/radio studies of neutron star Be/X-ray binaries.

dc.languageEnglish
dc.publisherOXFORD UNIV PRESS
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/FT140101082
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectAstronomy & Astrophysics
dc.subjectaccretion, accretion discs
dc.subjectstars: neutron
dc.subjectpulsars: individual: Swift J0243.6+6124
dc.subjectX-rays: binaries
dc.subjectDISC INSTABILITY MODEL
dc.subjectNEUTRON-STAR
dc.subjectMAGNETIC-FIELD
dc.subjectRADIO-EMISSION
dc.subjectSAX J1808.4-3658
dc.subjectLOW/HARD STATE
dc.subjectSTELLAR WIND
dc.subjectDWARF NOVAE
dc.subjectACCRETION
dc.subjectPULSAR
dc.titleA re-establishing jet during an X-ray re-brightening of the Be/X-ray binary Swift J0243.6+6124
dc.typeJournal Article
dcterms.source.volume483
dcterms.source.number4
dcterms.source.startPage4628
dcterms.source.endPage4638
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
dc.date.updated2020-07-22T07:21:28Z
curtin.note

Copyright © 2019 The American Astronomical Society. All rights reserved.

curtin.departmentSchool of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidMiller-Jones, James [0000-0003-3124-2814]
curtin.contributor.researcheridMiller-Jones, James [B-2411-2013]
dcterms.source.eissn1365-2966
curtin.contributor.scopusauthoridMiller-Jones, James [10044231400]


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