12 citations · 14 across the 12 of their papers we have counts for
12 papers
GRMHD and GRRT Simulations of Black Hole Accretion: Flares, Precession, and Complex Spacetimes
Hong-Xuan Jiang
This dissertation studies the electromagnetic signatures of accreting supermassive black holes using general relativistic magnetohydrodynamic simulations and covariant radiative-tr…
Magnetic Configuration Imprints on Quasi-Periodic Variability in GRMHD Simulations of Thin Accretion Disks
Jing-Ze Xia, Hong-Xuan Jiang, Indu K. Dihingia +1
The origin of quasi-periodic oscillations (QPOs) in black hole accretion flow remains uncertain, particularly regarding the role of magnetic field configurations in shaping disk st…
Dynamics and Radiative Signatures of Accretion Flows onto a Kerr-like Wormhole
Jing-ze Xia, Hong-xuan Jiang, Cheng Liu +1
Wormholes are a hypothetical object that connects disparate points in spacetime. It is a theoretically well-motivated black hole alternative and offers a potential observationally…
Signature of iron line profile from a Kerr-like wormhole
Cheng Liu, Hoongwah Siew, Hong-Xuan Jiang +2
Broad, skewed iron K emission lines in the X-ray spectra of accreting black holes encode key information about the spacetime geometry of the innermost disk. While the Kerr metri…
Electromagnetic Signatures of Supermassive Binary Black Holes: Synchrotron, Self-Lensing Flares, and Jet Precession
Hong-Xuan Jiang, Xinyu Li, Jing-Ze Xia +3
The recent evidence for a nanohertz gravitational wave background from Pulsar Timing Arrays highlights the urgent need to identify electromagnetic counterparts to supermassive bina…
Radiative Cooling Effects on Plasmoid Formation in Black Hole Accretion Flows with Multiple Magnetic Loops
Jing-Ze Xia, Hong-Xuan Jiang, Yosuke Mizuno +2
We investigate the influence of radiative cooling on plasmoid formation in black hole accretion flows using 2D and 3D two-temperature GRMHD simulations with multi-loop magnetic fie…
Quasi-Periodic Polarized Emissions from Kink Structure in Magnetized Relativistic Jets
Xu-Fan Hu, Hong-Xuan Jiang, Yosuke Mizuno +2
Recent polarimetric observations of blazars indicate the development of current-driven (CD) kink instability after passing the recollimation shocks in the relativistic jets and ass…
The Physical Origin and Time Lag of Multi-Frequency Flares from SgrA*
Hong-Xuan Jiang, Yosuke Mizuno, Indu K. Dihingia +5
Sagittarius~A, the supermassive black hole at the center of our galaxy, exhibits flares across various wavelengths, yet their origins remain elusive. We performed 3D two-temper…
Magnetically Driven Retrograde Precession in Misaligned Black Hole Accretion Flows
Hong-Xuan Jiang, Yosuke Mizuno, Dong Lai +2
Observations of accreting black hole (BH) systems, such as microquasars and supermassive black holes, often reveal a precessing jet with changing directions, indicating a misaligne…
Dynamics and Emission Properties of Flux Ropes from Two-Temperature GRMHD Simulations with Multiple Magnetic Loops
Hong-Xuan Jiang, Yosuke Mizuno, Indu K. Dihingia +3
Flux ropes erupting from the vicinity of the black hole are thought to be a potential model for the flares observed in Sgr\,A. In this study, we examine the radiative propertie…
Enhanced Blandford Znajek Jet in Loop Quantum Black Hole
Hong-Xuan Jiang, Indu K. Dihingia, Cheng Liu +2
The Blandford-Znajek (BZ) process powers energetic jets by extracting the rotating energy of a Kerr black hole. It is important to understand this process in non-Kerr black hole sp…
Shadows of Loop Quantum Black Holes: Semi-analytical Simulations of Loop Quantum Gravity Effects on Sagittarius A* and M 87*
Hong-Xuan Jiang, Cheng Liu, Indu K. Dihingia +4
In this study, we delve into the observational implications of rotating Loop Quantum Black Holes (LQBHs) within an astrophysical framework. We employ semi-analytical General Relati…