2002/05/27 by E. Kalemci, J. A. Tomsick, R. E. Rothschild +5 · 2 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Black hole (networking) #Coherence (philosophical gambling strategy) #Noise (video) #Pulsars and Gravitational Waves Research #State (computer science) #Time evolution #Time lag #Transient (computer programming) #astro-ph
paper · pdf · doi:10.1086/367693
published as Astrophys.J. 586 (2003) 419-426 · 22 pages, 7 figures, submitted to ApJ
arxiv created 2002/05/27 · openalex publication_date 2003/03/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigated the temporal behavior of the new black hole transient XTE J1650-500 with the Rossi X-Ray Timing Explorer as the source made a transition to the low/hard state during the decay of the 2001 outburst. We find quasi-periodic oscillations in the 4-9 Hz range, enhanced time lags, and reduced coherence during the state transition. We also observe a shift in the peak frequency of the noise component with energy during the transition. The evolution of the power spectrum, as well as the lag and coherence behavior during the state transition, are similar to the state transitions observed for other black hole sources, especially Cyg X-1. We suggest a possible geometry and evolution of a jet + corona + disk system, based on enhanced lags and peak frequency shift during the transition.