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X-ray and UV correlation in the quiescent emission of Cen X-4, evidence of accretion and reprocessing
F. Bernardini, E. M. Cackett, E. F. Brown +5
We conducted the first long-term (60 days), multiwavelength (optical, ultraviolet, and X-ray) simultaneous monitoring of Cen X-4 with daily Swift observations, with the goal of und…
A change in the quiescent X-ray spectrum of the neutron star low-mass X-ray binary MXB 1659-29
E. M. Cackett, E. F. Brown, A. Cumming +5
The quasi-persistent neutron star low-mass X-ray binary MXB 1659-29 went into quiescence in 2001, and we have followed its quiescent X-ray evolution since. Observations over the fi…
XMM-Newton and Swift spectroscopy of the newly discovered very-faint X-ray transient IGR J17494-3030
M. Armas Padilla, R. Wijnands, N. Degenaar
A growing group of low-mass X-ray binaries are found to be accreting at very-faint X-ray luminosities of <1E36 erg/s (2-10 keV). Once such system is the new X-ray transient IGR J17…
A low-level accretion flare during the quiescent state of the neutron-star X-ray transient SAX J1750.8-2900
Rudy Wijnands, Nathalie Degenaar
We report on a series of Swift/XRT observations, performed between February and 22 March 2012, during the quiescent state of the neutron-star X-ray binary SAX J1750.8-2900. In thes…
Continued Neutron Star Crust Cooling of the 11 Hz X-Ray Pulsar in Terzan 5: A Challenge to Heating and Cooling Models?
N. Degenaar, R. Wijnands, E. F. Brown +8
The transient neutron star low-mass X-ray binary and 11 Hz X-ray pulsar IGR J17480-2446 in the globular cluster Terzan 5 exhibited an 11-week accretion outburst in 2010. Chandra ob…
Swift Discovery of a New Soft Gamma Repeater, SGR J1745-29, near Sagittarius A*
J. A. Kennea, D. N. Burrows, C. Kouveliotou +10
Starting in 2013 February, Swift has been performing short daily monitoring observations of the G2 gas cloud near Sgr A* with the X-Ray Telescope to determine whether the cloud int…