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astro-ph1997
Non-detection of kHz QPOs in GX 9+1 and GX 9+9
Rudy Wijnands, Michiel van der Klis, Jan van Paradijs
In numerous low-mass X-ray binaries kHz quasi-periodic oscillations (kHz QPOs) are detected. We observed the atoll sources GX 9+1 and GX 9+9 with the RXTE satellite. Both sources w…
astro-ph1997
Kilohertz QPO and Atoll Source States in 4U 0614+09
M. Mendez, M. van der Klis, J. van Paradijs +5
We report three RXTE/PCA observations of the low-mass X-ray binary 4U 0614+09. They show strong (~ 30% rms) band-limited noise with a cut-off frequency varying between 0.7 and 15 H…