2002/07/30 by Wenfei Yu, W. Yu, M. van der Klis +5
Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Mechanics and Biomechanics Studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0207645
3 pages, 1 figure, to appear in the Proceedings of the 4th Microquasar Workshop, eds. Ph Durouchoux, Y. Fuchs and J. Rodriguez, published by the Center for Space Physics: Kolkata
arxiv created 2002/07/30 · openalex publication_date 2002/07/30 · arxiv updated 2009/12/01 · openalex created_date 2020/12/21 · openalex updated_date 2026/07/28
We have studied the dependence of the high frequency Quasi-periodic\nOscillation (QPO) (~284 Hz) on the phase of the low frequency QPO (~6 Hz) in\nthe black hole X-ray binary XTE J1550-564 in the observations of the Rossi\nX-ray Timing Explorer (RXTE) performed on MJD 51241. By selecting the local\nmaxima and the local minima in the light curve on the 6 Hz QPO time scale, we\nhave found the corresponding high frequency QPO frequencies are consistent\nwithin 1.5 sigma. However, the average central QPO frequency of the maxima and\nthe minima is about 2.0 sigma lower than the average high frequency QPO\nfrequency obtained in the entire observation. This marginally suggests that the\nhigh frequency QPOs probably varies in frequency on short time scales. We\nbriefly discuss these results and their consequences.\n