We present a spectrophotometric study of short-term optical variability in the quiescent black hole X-ray transient V404 Cyg. This includes two nights of high-time-resolution Ha spectroscopy with which we resolve much of the time variability, and a further six nights of archival spectroscopy with lower time resolution but higher spectral resolution. We find significant variability in most of the data considered, with both the Haline and the continuum often varying in a correlated way. This includes both dramatic flares lasting a few hours in which the line flux nearly doubles and lower-level flickering. The strongest flares involve development of asymmetry in the line profile, with the red wing usually strongest independent of orbital phase...
We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole...
We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg ...
In December 2015 the black hole binary V404 Cyg underwent a secondary outburst after the main June 2...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux vari...
We report simultaneous X-ray, optical, and radio observations of V404 Cyg in quiescence. The X-ray f...
We present a time-resolved spectrophotometric study of the optical variability in the quiescent soft...
We conducted the first long-term (75 d) X-ray monitoring of the black hole low-mass X-ray binary V40...
We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux vari...
We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole...
We present a multiwavelength study of the black hole X-ray binary V404 Cyg in quiescence, focusing u...
We present a serendipitous multiwavelength campaign of optical photometry simultaneous with Integral...
The dynamical structure and radiative properties of the quiescent state (X-ray luminosity less than ...
We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole...
We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg ...
In December 2015 the black hole binary V404 Cyg underwent a secondary outburst after the main June 2...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We present a spectrophotometric study of short-term optical variability in the quiescent black hole ...
We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux vari...
We report simultaneous X-ray, optical, and radio observations of V404 Cyg in quiescence. The X-ray f...
We present a time-resolved spectrophotometric study of the optical variability in the quiescent soft...
We conducted the first long-term (75 d) X-ray monitoring of the black hole low-mass X-ray binary V40...
We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux vari...
We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole...
We present a multiwavelength study of the black hole X-ray binary V404 Cyg in quiescence, focusing u...
We present a serendipitous multiwavelength campaign of optical photometry simultaneous with Integral...
The dynamical structure and radiative properties of the quiescent state (X-ray luminosity less than ...
We present results from multi-wavelength simultaneous X-ray and radio observations of the black hole...
We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg ...
In December 2015 the black hole binary V404 Cyg underwent a secondary outburst after the main June 2...