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Discovery of X-rays from the supernova remnant G0.9+0.1
L. Sidoli, G. L. Israel, L. Chiappetti +6
During the survey of the Galactic Center region, we have discovered X-ray emission from the central region of the supernova remnant G0.9+0.1. The high interstellar absor…
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…
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…
Complex outburst behaviour from the black-hole candidate 4U 1630-47
E. Kuulkers, A. N. Parmar, S. Kitamoto +2
We present data from different epochs in 1978, 1987-1991 and 1996 from the black-hole candidate 4U1630-47. For the first time we present almost complete coverage of the outbursts w…