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Delimiting the black hole mass in the X-ray transient MAXI J1659-152 with H spectroscopy
M. A. P. Torres, P. G. Jonker, J. Casares +2
MAXI J1659-152 is a 2.4 h orbital period X-ray dipping transient black hole candidate. We present spectroscopy of its quiescent counterpart where we detect H emissi…
An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz
M. Nicholl, T. Wevers, S. R. Oates +42
At 66 Mpc, AT2019qiz is the closest optical tidal disruption event (TDE) to date, with a luminosity intermediate between the bulk of the population and iPTF16fnl. Its proximity all…
Hypercompact stellar clusters: morphological renditions and spectro-photometric models
Davide Lena, Peter G. Jonker, Jean P. Rauer +2
Numerical relativity predicts that the coalescence of a black hole-binary causes the newly formed black hole to recoil, and evidence for such recoils has been found in the gravitat…
Observational constraints on the optical and near-infrared emission from the neutron star-black hole binary merger S190814bv
K. Ackley, L. Amati, C. Barbieri +151
On 2019 August 14, the LIGO and Virgo interferometers detected a high-significance event labelled S190814bv. Preliminary analysis of the GW data suggests that the event was likely…
The Origins of X-ray Line Emissions in Circinus~X-1 at Very Low X-ray Flux
N. S. Schulz, T. E. Kallman, S. Heinz +3
Accretion conditions and morphologies of X-ray transients containing neutron stars are still poorly understood. Circinus X-1 is an enigmatic case where we observe X-ray flux change…