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A Chandra observation of the globular cluster Terzan 1: the neutron-star X-ray transient X 1732-304 in quiescence
Rudy Wijnands, Craig O. Heinke, Jonathan E. Grindlay
We present a short (~3.6 ks) Chandra/HRC-I observation of the globular cluster Terzan 1. This cluster is known to contain the bright neutron star low-mass X-ray binary X 1732-304 w…
The burst behavior of the eclipsing low-mass X-ray binary MXB 1659-298
R. Wijnands, M. P. Muno, J. M. Miller +4
We present a detailed study of the correlations between the burst properties and the inferred mass accretion rate for the X-ray transient MXB 1659-298. The bursts which exhibited o…
Long-duration neutron star X-ray transients in quiescence: the Chandra observation of KS 1731-260
Rudy Wijnands
I will briefly discuss the implications of the recent quiescent Chandra observation of the long-duration neutron star transient KS 1731-260 (Wijnands et al. 2001a) on models for qu…
XMM-Newton Spectroscopy of the Galactic Microquasar GRS 1758-258 in the Peculiar Off/Soft State
J. M. Miller, R. Wijnands, P. M. Rodriguez-Pascual +5
We report on an XMM-Newton Reflection Grating Spectrometer observation of the black hole candidate and Galactic microquasar GRS 1758-258. The source entered a peculiar "off/soft" s…
A Chandra observation of the long-duration X-ray transient KS 1731-260 in quiescence: too cold a neutron star?
Rudy Wijnands, Jon M. Miller, Craig Markwardt +2
After more than a decade of actively accreting at about a tenth of the Eddington critical mass accretion rate, the neutron-star X-ray transient KS 1731-260 returned to quiescence i…
The erratic luminosity behavior of SAX J1808.4-3658 during its 2000 outburst
Rudy Wijnands, Mariano Mendez, Craig Markwardt +3
We report on the highly variable and erratic long-term X-ray luminosity behavior of the only known accretion-driven millisecond X-ray pulsar SAX J1808.4-3658 during its 2000 outbur…