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Chandra Observations of the Anomalous X-ray Pulsar 4U 0142+61
Sandeep K. Patel, Chryssa Kouveliotou, Peter M. Woods +7
We present X-ray imaging, timing, and phase resolved spectroscopy of the anomalous X-ray pulsar 4U 0142+61 using the Chandra X-ray Observatory. The spectrum is well described by a…
High frequency quasi-periodic oscillations in the black hole X-ray transient XTE J1650-500
Jeroen Homan, Marc Klein-Wolt, Sabrina Rossi +5
We report the detection of high frequency variability in the black hole X-ray transient XTE J1650-500. A quasi-periodic oscillation (QPO) was found at 250 Hz during a transition fr…
Tracing the power-law component in the energy spectrum of black hole candidates as a function of the QPO frequency
F. Vignarca, S. Migliari, T. Belloni +2
We investigated the relation between the centroid frequency of the quasi-periodic oscillation observed in the power density spectra of a sample of galactic black-hole candidates wi…
The 2002 outburst of the microquasar XTE J1550-564
A. P. Colombo, T. Belloni, J. Homan +2
We present results of spectral and timing analysis based on 11 RXTE PCA/HEXTE observations of the microquasar XTE J1550-564 during its last outburst in January 2002. The observed b…
GX 339-4: back to life
T. Belloni, E. Nespoli, J. Homan +4
We report preliminary results of a RossiXTE campaign on the 2002 outburst of the black-hole candidate GX 339-4. We show power density spectra of five observations during the early…
GRS 1915+105: Ten Years After
Tomaso Belloni
It is now ten years since the first microquasar GRS 1915+105 was discovered. More than six years of observations with RossiXTE have shown a level of variability never observed in a…