RXTE observations of the intermittent accreting millisecond X-ray pulsar HETE J1900.1-2455 (Kaaret et al. 2006 ApJ 638, 963; Galloway et al. 2007 ApJ 654, L73)...
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PublicationDiscovery of burst oscillations near the spin frequency in the intermittent accreting millisecond pulsar HETE J1900.1-2455
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PublicationDiscovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021.
We report on RXTE observations of the ongoing outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 (Altamirano et al. 2008, 674, 45A, see ATEL...
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PublicationDiscovery of the optical counterpart to XTEJ1748-361=A1744-36
We report the discovery of the optical counterpart to the X-ray transient XTE J1748-361 using the 6.5m Magellan-Clay telescope at Las Campanas Observatory...
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PublicationDiscovery of the shortest recurrence time between thermonuclear X- ray bursts
An RXTE observation of 4U 1636-536 taken on March 10th, 2009, revealed two type I X-ray bursts from this well studied neutron star low-mass X- ray binary (NS...
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Publicatione-EVN observations of Aql X-1 in outburst
The neutron star X-ray binary Aql X-1 shows quasi-periodic outbursts about once a year. These active states are relatively well covered in optical/infrared and...
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PublicationEXOSAT observations of two gamma-ray burst sources
EXOSAT observations of the 19 Nov. 1978 and 25 Mar. 1979b gamma bursters are presented, for the 0.02 - 2.5 keV energy range. No source was detected in either...
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PublicationExtinction as a tool to find distances to X-ray sources
Finding distances in astronomy is notoriously difficult. With accurate optical spectroscopy, both the distance to and extinction (reddening) of normal stars can...
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PublicationFaulkes Telescope monitoring of the current outburst of IGR J00291+5934
As part of an optical monitoring project of low-mass X-ray binaries (
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PublicationFirst Detection of the X-ray Burster 2S 1711-339 in Quiescence and a Suggested Optical Counterpart.
We report on a Chandra observation of the transient low-mass X-ray binary and type-I X-ray burst source 2S 1711-339 (Carpenter et al. 1977,MNRAS,179,270; Wilson...