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Long term optical and X-ray variability of the Seyfert galaxy Markarian 79
E. Breedt, P. Arévalo, I. M. McHardy +8
We present the results of concurrent X-ray and optical monitoring of the Seyfert 1 galaxy Mrk 79 over a period of more than five years. We find that on short to medium time-scales…
Chandra and Swift observations of the quasi-persistent neutron star transient EXO 0748-676 back to quiescence
N. Degenaar, R. Wijnands, M. T. Wolff +8
The quasi-persistent neutron star X-ray transient and eclipsing binary EXO 0748-676 recently started the transition to quiescence following an accretion outburst that lasted more t…
A Deep XMM-Newton Observation of the Quasar 3C 287
G. Salvesen, J. M. Miller, E. Cackett +1
We report on an XMM-Newton observation of the z=1.055 quasar and Giga-hertz Peaked Spectrum (GPS) source 3C 287. Our 62.3 ksec observation provides an exceptional X-ray view of a p…
A search for iron emission lines in the Chandra X-ray spectra of neutron star low-mass X-ray binaries
E. M. Cackett, J. M. Miller, J. Homan +6
While iron emission lines are well studied in black hole systems, both in X-ray binaries and Active Galactic Nuclei, there has been less of a focus on these lines in neutron star l…
Science with the XEUS High Time Resolution Spectrometer
D. Barret, T. Belloni, S. Bhattacharyya +12
XEUS has been recently selected by ESA for an assessment study. XEUS is a large mission candidate for the Cosmic Vision program, aiming for a launch date as early as 2018. XEUS is…
Cooling of the crust in the neutron star low-mass X-ray binary MXB 1659-29
Edward M. Cackett, Rudy Wijnands, Jon M. Miller +2
In quasi-persistent neutron star transients, long outbursts cause the neutron star crust to be heated out of thermal equilibrium with the rest of the star. During quiescence, the c…