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dc.contributor.authorMigliari, S.
dc.contributor.authorMiller-Jones, James
dc.contributor.authorFender, R.
dc.contributor.authorHoman, J.
dc.contributor.authorDi Salvo, T.
dc.contributor.authorRothschild, R.
dc.contributor.authorRupen, M.
dc.contributor.authorTomsick, J.
dc.contributor.authorWijnands, R.
dc.contributor.authorvan der Klis, M.
dc.identifier.citationMigliari, S. and Miller-Jones, J. and Fender, R. and Homan, J. and Di Salvo, T. and Rothschild, R. and Rupen, M. et al. 2007. Linking Jet Emission, X-Ray States, and Hard X-Ray Tails in the Neutron Star X-Ray Binary GX 17+2. The Astrophysical Journal. 671 (1): pp. 706-712.

We present the results of simultaneous radio (VLA) and X-ray (RXTE) observations of the Z-type neutron star X-ray binary GX 17+2. The aim is to assess the coupling between X-ray and radio properties throughout its three rapidly variable X-ray states and during the time-resolved transitions. These observations allow us, for the first time, to investigate quantitatively the possible relations between the radio emission and the presence of hard X-ray tails and the X-ray state of the source. The observations reveal (1) a coupling between the radio jet emission and the X-ray state of the source, that is, the position in the X-ray hardness-intensity diagram (HID); (2) a coupling between the presence of a hard X-ray tail and the position in the HID, qualitatively similar to that found for the radio emission; (3) an indication of a quantitative positive correlation between the radio flux density and the X-ray flux in the hard tail power-law component; (4) evidence for the formation of a radio jet associated with the flaring branch-to-normal branch X-ray state transition; and (5) that the radio flux density of the newly formed jet stabilizes when the normal-branch oscillation (NBO) in the X-ray power spectrum stabilizes its characteristic frequency, suggesting a possible relation between X-ray variability associated with the NBO and jet formation. We discuss our results in the context of jet models.

dc.publisherInstitute of Physics Publishing, Inc.
dc.subjectISM: Jets and Outflows
dc.subjectRadio Continuum: General
dc.subjectstars: individual (GX 17+2)
dc.subjectX-Rays: Binaries
dc.subjectAccretion Disks
dc.titleLinking Jet Emission, X-Ray States, and Hard X-Ray Tails in the Neutron Star X-Ray Binary GX 17+2
dc.typeJournal Article
dcterms.source.titleThe Astrophysical Journal
curtin.accessStatusFulltext not available

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