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The optical counterpart of SAX J1808.4-3658, the transient bursting millisecond X-ray pulsar
A. B. Giles, K. M. Hill, J. G. Greenhill
A set of CCD images have been obtained during the decline of the X-ray transient SAX J1808.4-3658 during April-June 1998. The optical counterpart has been confirmed by several piec…
Pulse Profiles, Accretion Column Dips and a Flare in GX 1+4 During a Faint State
A. B. Giles, D. K. Galloway, J. G. Greenhill +2
The Rossi X-ray Timing Explorer (RXTE) spacecraft observed the X-ray pulsar GX 1+4 for a period of 34 hours on July 19/20 1996. The source faded from an intensity of ~20 mCrab to a…
Spectral variation in the X-ray pulsar GX 1+4 during a low-flux episode
D. K. Galloway, A. B. Giles, J. G. Greenhill +1
The X-ray pulsar GX 1+4 was observed with the RXTE satellite for a total of 51ks between 1996 July 19 - 21. During this period the flux decreased smoothly from an initial mean leve…