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Continued cooling of the crust in the neutron star low-mass X-ray binary KS 1731-260
Edward M. Cackett, Edward F. Brown, Andrew Cumming +3
Some neutron star low-mass X-ray binaries have very long outbursts (lasting several years) which can generate a significant amount of heat in the neutron star crust. After the syst…
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…
Quiescent X-ray emission from Cen X-4: a variable thermal component
Edward M. Cackett, Edward F. Brown, Jon M. Miller +1
The nearby neutron star low-mass X-ray binary, Cen X-4, has been in a quiescent state since its last outburst in 1979. Typically, quiescent emission from these objects consists of…
A four-year baseline Swift study of enigmatic X-ray transients located near the Galactic center
N. Degenaar, R. Wijnands
We report on continued monitoring observations of the Galactic center carried out by the X-ray telescope aboard the Swift satellite in 2008 and 2009. This campaign revealed activit…
Further X-ray observations of EXO 0748-676 in quiescence: evidence for a cooling neutron star crust
N. Degenaar, M. T. Wolff, P. S. Ray +8
In late 2008, the quasi-persistent neutron star X-ray transient and eclipsing binary EXO 0748-676 started a transition from outburst to quiescence, after it had been actively accre…
XTE J1701-462 and its Implications for the Nature of Subclasses in Low-Magnetic-Field Neutron Star Low-Mass X-Ray Binaries
Jeroen Homan, Michiel van der Klis, Joel K. Fridriksson +8
We report on an analysis of RXTE data of the transient neutron star low-mass X-ray binary (NS-LMXB) XTE J1701-462, obtained during its 2006-2007 outburst. The X-ray properties of t…