Multicolour observations of V404 Cyg and J1118+480 with ULTRACAM

Details Multicolour observations of V404 Cyg and J1118+480 with ULTRACAM Multicolour observations of V404 Cyg and J1118+480 with ULTRACAM

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..714...65s&link_type=abstract

X-RAY TIMING 2003: Rossie and Beyond. AIP Conference Proceedings, Volume 714, pp. 65-70 (2004).

Physics

Black Holes, X-Ray, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

We present high time-resolution multicolour observations of the quiescent soft X-ray transients V404 Cyg and XTE J1118+480 obtained with ULTRACAM. The power density spectrum (PDS) of the V404 Cyg data shows a quasi-periodic oscillation (QPO) feature at 0.78 mHz (=21.5 min), whereas the PDS of the XTE J1118+480 data shows a break. We discuss the possible origins for the QPO feature and break-frequency in the context of the advection-dominated accretion flow model.

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