Discovery of optical outflows and inflows in the black hole candidate GRS 1716โ249
Discovery of optical outflows and inflows in the black hole candidate GRS 1716โ249
We present optical spectroscopy obtained with the GTC, VLT and SALT telescopes during the decline of the 2016-2017 outburst of the black hole candidate GRS 1716-249 (Nova Oph 1993). Our 18-epoch data set spans 6 months and reveals that the observational properties of the main emission lines are very variable, โฆ