6 citations · 12 across the 6 of their papers we have counts for
6 papers
Flux enhancement of corotating hot spots in accretion disks from the slow-light effect
Qing-Hua Zhu
With the Event Horizon Telescope and future Very Long Baseline Interferometry arrays poised to image supermassive black holes, there is a strong motivation to understand the dynami…
Reassessing the SIGW Interpretation of PTA Signal: The Role of Third-Order Gravitational Waves and Implications for the PBH Overproduction
Zhi-Chao Zhao, Sai Wang, Qing-Hua Zhu +1
In light of recent interpretations attributing pulsar timing array (PTA) signal to second-order gravitational waves induced by linear cosmological curvature perturbations in the ea…
Ray tracing for the Terrell-Penrose effect in black hole spacetime
Qing-Hua Zhu
Motivated by recent images of black holes in M87 and our galaxy, efficient relativistic ray tracing was developed to simulate the snapshots of variable emissions around the black h…
Auto- and cross-correlations for multiple images of corotating hotspots in accretion disks
Qing-Hua Zhu
Due to the short gravitational timescale of Sgr A*, variable emissions near the galactic center are expected in the Very-long-baseline interferometry observations. Phenomenological…
Observational signatures from higher-order images of moving hotspots in accretion disks
Qing-Hua Zhu
The efforts to probe the horizon-scale structure of black holes, such as Event Horizon Telescope and GRAVITY interferometer, might provide valuable insights into the strong-field r…
Aberration effect on lower-order images of thin accretion disk in the astrometric approach
Qing-Hua Zhu
With recent advancements in observing supermassive black holes with the Event Horizon Telescope, there has been persistent exploration into what the images can reveal about fundame…