Search Publications
The effect of accretion on the measurement of neutron star mass and radius in the low-mass X-ray binary 4U 1608-52
Suleimanov, Valery F.; Poutanen, Juri; Nättilä, Joonas +4 more
Spectral measurements of thermonuclear (type I) X-ray bursts from low-mass X-ray binaries have been used to measure neutron star (NS) masses and radii. A number of systematic issues affect such measurements and have raised concerns as to the robustness of the methods. We present analysis of the X-ray emission from bursts observed from 4U 1608-52 a…
Discovery of periodic dips in the light curve of GX 13+1: the X-ray orbital ephemeris of the source
Robba, N. R.; Di Salvo, T.; Burderi, L. +3 more
Context. The bright low-mass X-ray binary (LMXB) GX 13+1 is one of the most peculiar Galactic binary systems. A periodicity of 24.27 d was observed in its power spectrum density obtained from data collected over 14 years by the All Sky Monitor (ASM) on board the Rossi X-ray Timing Explorer (RXTE).
Aims: To determine the first X-ray orbital ep…
A 33 Yr Constancy of the X-Ray Coronae of AR Lac and Eclipse Diagnosis of Scale Height
Drake, Jeremy J.; Huenemoerder, David P.; Ratzlaff, Peter +3 more
Extensive X-ray and EUV photometric observations of the eclipsing RS CVn system AR Lac were obtained over the years 1997-2013 with the Chandra X-Ray Observatory Extreme-Ultraviolet Explorer (EUVE). During primary eclipse, High Resolution Camera count rates decrease by ~40%. A similar minimum is seen during one primary eclipse observed by EUVE but …