2 papers
astro-ph.GA2025
Spatially resolved broad line region in a quasar at z=4: Dynamical black hole mass and prominent outflow
GRAVITY+ Collaboration, K. Abd El Dayem, N. Aimar +92
We present the first near-infrared interferometric data of a QSO at z=4. The K-band observations were performed with GRAVITY+ on the VLTI using all four UTs, detecting a differenti…
astro-ph.GA2025
Timescales of Quasar Accretion Discs from Low to High Black Hole Masses and a Turnover at the High Mass End
C. Wolf, S. Lai, J. -J. Tang +1
Characteristic time scales in the stochastic UV-optical variability of quasars may depend on the mass of their black holes, , as much as physical timescales in their ac…