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The mass function of GX 339-4 from spectroscopic observations of its donor star
M. Heida, P. G. Jonker, M. A. P. Torres +1
We obtained 16 VLT/X-shooter observations of GX 339-4 in quiescence in the period May - September 2016 and detected absorption lines from the donor star in its NIR spectrum. This a…
Spectroscopic classification of X-ray sources in the Galactic Bulge Survey
T. Wevers, M. A. P. Torres, P. G. Jonker +14
We present the classification of 26 optical counterparts to X-ray sources discovered in the Galactic Bulge Survey. We use (time-resolved) photometric and spectroscopic observations…
Disk-jet coupling in low-luminosity accreting neutron stars
V. Tudor, J. C. A. Miller-Jones, A. Patruno +12
In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards qu…
A Systematic Search for Near-Infrared Counterparts of Nearby Ultraluminous X-ray sources (II)
K. M. López, M. Heida, P. G. Jonker +5
We present the results of our continued systematic search for near-infrared (NIR) candidate counterparts to ultraluminous X-ray sources (ULXs) within 10 Mpc. We observed 42 ULXs in…
A Search for Millisecond-pulsar Radio Emission from the Faint Quiescent Soft X-ray Transient 1H 1905+000
K. Mikhailov, J. van Leeuwen, P. G. Jonker
Transitional millisecond pulsars (tMSPs) switch between an accretion-powered state without radio pulsations and a rotation-powered state with radio pulsations. In the former state,…