141 citations · 2.1k across the 72 of their papers we have counts for
11 papers · 1 filter
Fast infrared winds during the radio-loud and X-ray obscured stages of the black hole transient GRS 1915+105
J. Sánchez-Sierras, T. Muñoz-Darias, S. E. Motta +10
The black hole transient GRS 1915+105 entered a new phase of activity in 2018, generally characterised by low X-ray and radio fluxes. This phase has been only interrupted by episod…
Evidence for a black hole in the historical X-ray transient A 1524-61 (=KY TrA)
I. V. Yanes-Rizo, M. A. P. Torres, J. Casares +5
We present VLT spectroscopy, high-resolution imaging and time-resolved photometry of KY TrA, the optical counterpart to the X-ray binary A 1524-61. We perform a refined astrometry…
The omnipresent flux-dependent optical dips of the black hole transient Swift J1357.2-0933
G. Panizo-Espinar, T. Muñoz-Darias, M. Armas Padilla +15
Swift J1357.2-0933 is a black hole transient of particular interest due to the optical, recurrent dips found during its first two outbursts (in 2011 and 2017), with no obvious X-ra…
An infrared FWHM- correlation to uncover highly reddened quiescent black holes
V. A. Cúneo, J. Casares, M. Armas Padilla +7
Among the sample of Galactic transient X-ray binaries (SXTs) discovered to date, about 70 have been proposed as likely candidates to host a black hole. Yet, only 19 have been dynam…
H spectroscopy of the high-inclination black hole transient Swift J1357.2-0933 during quiescence
A. Anitra, D. Mata Sanchez, T. Munoz-Darias +6
Swift J1357.2-0933 is a transient low-mass X-ray binary hosting a stellar-mass black hole. The source exhibits optical dips and very broad emission lines during both outburst and q…
Unveiling optical signatures of outflows in accreting white dwarfs
V. A. Cúneo, T. Muñoz-Darias, F. Jiménez-Ibarra +8
Accreting white dwarfs are known to show signatures of wind-type outflows in the ultraviolet. At optical wavelengths, however, wind detections have only been reported for a few sou…
The orbital period, black hole mass and distance to the X-ray transient GRS 1716-249 (=N Oph 93)
J. Casares, I. V. Yanes-Rizo, M. A. P. Torres +7
We present evidence for a 0.278(8) d (=6.7 h) orbital period in the X-ray transient GRS 1716-249 (=N Oph 93), based on a superhump modulation detected during the 1995 mini-outburst…
Sub-second infrared variability from the archetypal accreting neutron star 4U~1728-34
F. M. Vincentelli, P. Casella, A. Borghese +23
We report on the first simultaneous high-time resolution X-ray and infrared (IR) observations of a neutron star low mass X-ray binary in its hard state. We performed h…
UltraCompCAT: a comprehensive Catalogue of Ultra-Compact and Short Orbital Period X-ray Binaries
M. Armas Padilla, J. M. Corral-Santana, A. Borghese +4
Ultracompact X-ray binaries (UCXBs) are a distinctive but elusive family of low-mass X-ray binaries (LMXBs) characterised by their tight orbits and degenerate donor stars. Here we…
Optical and near-infrared spectroscopy of the black hole transient 4U 1543-47 during its 2021 ultra-luminous state
J. Sánchez-Sierras, T. Muñoz-Darias, J. Casares +10
We present simultaneous optical and near-infrared spectra obtained during the 2021 outburst of the black hole transient 4U 1543-47. The X-ray hardness-intensity diagram and the com…
A shared accretion instability for black holes and neutron stars
F. M. Vincentelli, J. Neilsen, A. J. Tetarenko +20
Accretion disks around compact objects are expected to enter an unstable phase at high luminosity. One instability may occur when the radiation pressure generated by accretion modi…