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astro-ph1997
A varying kHz peak separation in 4U 1608-52
M. Mendez, M. van der Klis, J. van Paradijs +6
Using a new technique to improve the sensitivity to weak Quasi-Periodic Oscillations (QPO) we discovered a new QPO peak at about 1100 Hz in the March 1996 outburst observations of…
astro-ph1997
Discovery of a second kHz QPO peak in 4U 1608-52
M. Mendez, M. van der Klis, J. van Paradijs +6
Using a new technique to improve the sensitivity to weak Quasi-Periodic Oscillations (QPO) we discovered a new QPO peak at about 1100 Hz in the March 1996 outburst observations of…
astro-ph1997
Discovery of microsecond time lags in kilohertz QPO
Brian A. Vaughan, Michiel van der Klis, Mariano Mendez +7
Using the Rossi X-ray Timing Explorer we have measured 27 microsecond time delays in 830 Hz quasi-periodic oscillations (QPO) between 4-6 keV and 11-17 keV in 4U 1608-52, with high…