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Relativistic Signatures of Flux Eruption Events Near Black Holes
Zachary Gelles, Koushik Chatterjee, Michael Johnson +2
Images of supermassive black holes produced using very long baseline interferometry provide a pathway to directly observing effects of a highly curved spacetime, such as a bright `…
Tracing the hot spot motion using the next generation Event Horizon Telescope (ngEHT)
Razieh Emami, Paul Tiede, Sheperd S. Doeleman +19
We propose to trace the dynamical motion of a shearing hot spot near the SgrA* source through a dynamical image reconstruction algorithm, StarWarps. Such a hot spot may form as the…
Radiation Transport Two-Temperature GRMHD Simulations of Warped Accretion Disks
M. T. P. Liska, N. Kaaz, G. Musoke +2
In many black hole systems, the accretion disk is expected to be misaligned with respect to the black hole spin axis. If the scale height of the disk is much smaller than the misal…
Nozzle Shocks, Disk Tearing and Streamers Drive Rapid Accretion in 3D GRMHD Simulations of Warped Thin Disks
Nicholas Kaaz, Matthew T. P. Liska, Jonatan Jacquemin-Ide +4
The angular momentum of gas feeding a black hole (BH) is typically misaligned with respect to the BH spin, resulting in a tilted accretion disk. Rotation of the BH drags the surrou…
Unraveling Twisty Linear Polarization Morphologies in Black Hole Images
Razieh Emami, Angelo Ricarte, George N. Wong +23
We investigate general relativistic magnetohydrodynamic simulations (GRMHD) to determine the physical origin of the twisty patterns of linear polarization seen in spatially resolve…
On the jet-ejecta interaction in 3D GRMHD simulations of binary neutron star merger aftermath
Ore Gottlieb, Serena Moseley, Teresita Ramirez-Aguilar +3
Short -ray burst (sGRB) jets form in the aftermath of a neutron star merger, drill through disk winds and dynamical ejecta, and extend over four to five orders of magnitude in d…
Black hole to photosphere: 3D GRMHD simulations of collapsars reveal wobbling and hybrid composition jets
Ore Gottlieb, Matthew Liska, Alexander Tchekhovskoy +4
Long-duration -ray bursts (GRBs) accompany the collapse of massive stars and carry information about the central engine. However, no 3D models have been able to follow these jet…
Bridging Bondi and Event Horizon Scales: 3D GRMHD Simulations Reveal X-Shaped Radio Galaxy Morphology
Aretaios Lalakos, Ore Gottlieb, Nick Kaaz +6
X-shaped radio galaxies (XRGs) produce misaligned X-shaped jet pairs and make up of radio galaxies. XRGs are thought to emerge in galaxies featuring a binary superma…
Disk Tearing Leads to Low and High Frequency Quasi Periodic Oscillations in a GRMHD Simulation of a Thin Accretion Disk
G. Musoke, M. Liska, O. Porth +2
Black hole X-ray binaries (BHXRBs) display a wide range of variability phenomena, from long duration spectral state changes to short-term broadband variability and quasi-periodic o…
Jet Formation in 3D GRMHD Simulations of Bondi-Hoyle-Lyttleton Accretion
Nicholas Kaaz, Ariadna Murguia-Berthier, Koushik Chatterjee +2
A black hole (BH) travelling through a uniform, gaseous medium is described by Bondi-Hoyle-Lyttleton (BHL) accretion. If the medium is magnetized, then the black hole can produce r…
Formation of Magnetically Truncated Accretion Disks in 3D Radiation-Transport Two-Temperature GRMHD Simulations
M. T. P. Liska, G. Musoke, A. Tchekhovskoy +2
Multi-wavelength observations suggest that the accretion disk in the hard and intermediate states of X-ray binaries (XRBs) and active galactic nuclei (AGN) transitions from a cold,…