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Achromatic late-time variability in thermonuclear X-ray bursts - an accretion disk disrupted by a nova-like shell?
J. J. M. in 't Zand, D. K. Galloway, D. R. Ballantyne
An unusual Eddington-limited thermonuclear X-ray burst was detected from the accreting neutron star in 2S 0918-549 with the Rossi X-ray Timing Explorer. The burst commenced with a…
Radius-expansion burst spectra from 4U 1728-34: an ultracompact binary?
Duncan K. Galloway, Yangsen Yao, Herman Marshall +2
Recent theoretical and observational studies have shown that ashes from thermonuclear burning may be ejected during radius-expansion bursts, giving rise to photoionisation edges in…
Puzzling thermonuclear burst behaviour from the transient low-mass X-ray binary IGR J17473-2721
J. Chenevez, D. Altamirano, D. K. Galloway +8
We investigate the thermonuclear bursting behaviour of IGR J17473-2721, an X-ray transient that in 2008 underwent a six month long outburst, starting (unusually) with an X-ray burs…
A Double Outburst from IGR J00291+5934: Implications for Accretion Disk Instability Theory
Jacob M. Hartman, Duncan K. Galloway, Deepto Chakrabarty
The accretion-powered millisecond pulsar IGR J00291+5934 underwent two ~10 d long outbursts during 2008, separated by 30 d in quiescence. Such a short quiescent period between outb…
Ignition column depths of helium-rich thermonuclear bursts from 4U 1728-34
Zdenka Misanovic, Duncan K. Galloway, Randall L. Cooper
We analysed thermonuclear (type-I) X-ray bursts observed from the low-mass X-ray binary 4U1728-34 by RXTE, Chandra and INTEGRAL. We compared the variation in burst energy and recur…