Search for fast correlated X-ray and optical variability in Cir X-1 and XTE J1746-321

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dc.creatorSpruit, H. C.
dc.creatorSteinle, H.
dc.creatorKanbach, G.
dc.date2004-04-27
dc.date2004-04-29
dc.date.accessioned2026-07-07T02:13:01Z
dc.date.available2026-07-07T02:13:01Z
dc.descriptionCoordinated observations X-ray+optical observations of two southern X-ray binaries, the black hole candidate XTE J1746-321 and the neutron star accreter Cir X-1 (a `microquasar') are reported. With a photon counting optical photometer on the 1.9m telescope at Sutherland, South Africa and the PCA detector on RXTE, 4h each of simultaneous data were obtained on XTE J1746 and Cir X-1. Cir X-1 showed no X-ray variability at the 2% level, XTE J1746 was variable at 5-7% with a 5Hz QPO. Cross-correlation yielded no correlated signals on either source, to a level of 1%. A problem with a recently published orbital ephemeris of Cir X-1 is pointed out.
dc.descriptionMixup of object name corrected, observation was of XTE J1746, not SLX 1746. References updated
dc.identifierhttps://arxiv.org/abs/astro-ph/0404524
dc.identifierhttp://arxiv.org/abs/astro-ph/0404524
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7665
dc.subjectAstrophysics
dc.titleSearch for fast correlated X-ray and optical variability in Cir X-1 and XTE J1746-321
dc.typetext

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