46 citations · 159 across the 6 of their papers we have counts for
6 papers · 1 filter
Chandra X-Ray Spectroscopy of the Focused Wind in the Cygnus X-1 System. II. The Nondip Spectrum in the Low/Hard State - Modulations with Orbital Phase
Ivica Miškovičová, Natalie Hell, Manfred Hanke +14
The accretion onto the black hole in the system HDE 226868/Cygnus X-1 is powered by the strong line driven stellar wind of the O-type donor star. We study the X-ray properties of t…
X-ray reflection in oxygen-rich accretion discs of ultra-compact X-ray binaries
O. K. Madej, J. Garcia, P. G. Jonker +4
We present spectroscopic X-ray data of two candidate ultra-compact X-ray binaries: 4U~0614+091 and 4U~1543624. We confirm the presence of a broad O VIII Ly reflection line (a…
Variable Doppler shifts of the thermal wind absorption lines in low-mass X-ray binaries
O. K. Madej, P. G. Jonker, M. Diaz Trigo +1
In this paper we address the general applicability of the method pioneered by \citet{Zhang2012} in which the motion of the compact object can be tracked using wind X-ray absorption…
Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091
O. K. Madej, P. G. Jonker, P. J. Groot +3
In this paper we present X-Shooter time resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to…
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…
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…