Discovery of optical outflows and inflows in the black hole candidate GRS 1716-249

Abstract

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, even on time scales of a few hours. Several epochs are characterised by P-Cyg (as well as flat-top and asymmetric) profiles in the H$\alpha$, H$\beta$ and He II ($\lambda$4686) emission lines, implying the presence of an accretion disc wind, which is likely hot and dense. The wind's terminal velocity ($\sim$2000 km s${}^{-1}$) is similar to that observed in other black hole X-ray transients. These lines also show transient and sharp red-shifted absorptions, taking the form of inverted P-Cyg profiles. We argue that these profiles can be explained by the presence of infalling material at $\sim$1300 km s${}^{-1}$. We propose a failed wind scenario to explain this inflow and discuss other alternatives, such as obscuration produced by an accretion-related structure (e.g. the gas stream) in a high inclination system.

Published in MNRAS main journal

References in corpus (14)

• Modelling the behaviour of accretion flows in X-ray binaries
• Super-critically accreting stellar-mass black holes as ultraluminous X-ray sources
• The magnetic nature of disk accretion onto black holes
• The binary mass ratio in the black hole transient MAXI J1820+070
• A Black Hole Nova Obscured by an Inner Disk Torus
• Hard-state accretion disk winds from black holes: the revealing case of MAXI J1820+070
• Near-infrared emission lines trace the state-independent accretion disc wind of the black hole transient MAXI J1820+070
• Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni
• Thermal Disk Winds in X-ray Binaries: Realistic Heating and Cooling Rates Give Rise to Slow, but Massive Outflows
• Thermal and radiation driving can produce observable disk winds in hard-state X-ray binaries
• Accretion and Outflow in V404 Cyg
• The luminosity dependence of thermally-driven disc winds in low-mass X-ray binaries
• Kinematical Studies of the Low Mass X-Ray Binary GR Mus (XB1254-690)
• Re-awakening of GRS 1716--249 after 23 years, observed by {\it Swift}/XRT and {\it NuSTAR}

Cited by in corpus (17)

• Hard-state optical wind during the discovery outburst of the black-hole X-ray dipper MAXI J1803-298
• Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348-630
• Simultaneous X-ray and optical spectroscopy of V404 Cygni supports the multi-phase nature of X-ray binary accretion disc winds
• The current state of disk wind observations in BHLMXBs through X-ray absorption lines in the iron band
• Delimiting the black hole mass in the X-ray transient MAXI J1659-152 with H$\alpha$ spectroscopy
• Impact of the disk magnetization on MHD disk wind signature
• Optical and near-infrared spectroscopy of the black hole transient 4U 1543-47 during its 2021 ultra-luminous state
• Optical nebular emission following the most luminous outburst of Aquila X-1
• Variable ionized disk wind in MAXI J1803-298 revealed by NICER
• Ask The Machine: Systematic detection of wind-type outflows in low-mass X-ray binaries
• Unveiling optical signatures of outflows in accreting white dwarfs
• Accretion disc winds in X-ray binaries
• Ubiquitous yet forgotten: broad absorptions in the optical spectra of low-mass X-ray binaries
• X-ray view of emission lines in optical spectra: Spectral analysis of the two low-mass X-ray binary systems Swift J1357.2-0933 and MAXI J1305-704
• Tracking optical variability and outflows across the accretion states of the black hole transient MAXI J1820+070
• A Diagnostic Kit for Optical Emission Lines Shaped by Accretion Disc Winds
• A multi-wavelength study of GRS 1716-249 in outburst : constraints on its system parameters