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Discovery of a broad O VIII Ly alpha line in the ultra-compact X-ray binary 4U 1543-624
O. K. Madej, P. G. Jonker
We report the discovery of a broad emission feature at ~0.7 keV in the spectra of the ultra-compact X-ray binary 4U 1543-624, obtained with the high-resolution spectrographs of the…
Parsec-Scale Bipolar X-ray Shocks Produced by Powerful Jets from the Neutron Star Circinus X-1
P. H. Sell, S. Heinz, D. E. Calvelo +10
We report the discovery of multi-scale X-ray jets from the accreting neutron star X-ray binary, Circinus X-1. The bipolar outflows show wide opening angles and are spatially coinci…
A relativistically broadened O VIII Lyalpha line in the ultra-compact X-ray binary 4U 0614+091
O. K. Madej, P. G. Jonker, A. C. Fabian +3
Ultra-compact X-ray binaries consist of a neutron star or black hole that accretes material from a white dwarf-donor star. The ultra-compact nature is expressed in very short orbit…
The Double-Peaked 2008 Outburst of the Accreting Milli-Second X-ray Pulsar, IGR J00291+5934
F. Lewis, D. M. Russell, P. G. Jonker +18
In August 2008, the accreting milli-second X-ray pulsar (AMXP), IGR J00291+5934, underwent an outburst lasting ~ 100 days, the first since its discovery in 2004. We present data fr…
Multi-wavelength observations of 1RXH J173523.7-354013: revealing an unusual bursting neutron star
N. Degenaar, P. G. Jonker, M. A. P. Torres +14
On 2008 May 14, the Burst Alert Telescope aboard the Swift mission triggered on a type-I X-ray burst from the previously unclassified ROSAT object 1RXH J173523.7-354013, establishi…
Disentangling jet and disc emission from the 2005 outburst of XTE J1118+480
C. Brocksopp, P. G. Jonker, D. Maitra +4
The black hole X-ray transient, XTE J1118+480, has now twice been observed in outburst - 2000 and 2005 - and on both occasions remained in the low/hard X-ray spectral state. Here w…