11 papers
Extreme-Lensing Signatures Revealed by Correlations of Simulated Black-Hole Movies
Barbora BezdÄková, Shahar Hadar, George Wong +1
A black hole's gravitational pull can deflect light rays to an arbitrary degree. As a result, any source fluctuation near the black hole creates multiple lagged images on an observ…
Ring Asymmetry and Spin in M87*
Vadim Bernshteyn, Nicholas S. Conroy, Michi Bauböck +263
Event Horizon Telescope (EHT) images of the supermassive black hole M87* depict an asymmetric ring of emission. General relativistic magnetohydrodynamic (GRMHD) models of M87* and…
On the Physical Origins of the Millimeter Fundamental Plane in Active Galactic Nuclei
Kratika Mazde, Angelo Ricarte, George N. Wong
Observations of active galactic nuclei have revealed a correlation between millimeter luminosity, X-ray luminosity, and mass, suggesting the emission in each of these bands is powe…
Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations
Saurabh, Hendrik Müller, Sebastiano D. von Fellenberg +282
We investigate the presence and spatial characteristics of the jet base emission in M87* at 230 GHz, enabled by the enhanced uv coverage in the 2021 Event Horizon Telescope (EHT) o…
Photon Orbit Signatures in Spectra of Black Hole Accretion Disks
Daniel C. M. Palumbo, George N. Wong, Angelo Ricarte
Light orbiting an accreting black hole may impact the disk or jet multiple times before escaping to the observer, at a variety of angles with respect to the local magnetic field. I…
Mahakala: a Python-based Modular Ray-tracing and Radiative Transfer Algorithm for Curved Space-times
Aniket Sharma, Lia Medeiros, Chi-kwan Chan +4
We introduce Mahakala, a Python-based, modular, radiative ray-tracing code for curved space-times. We employ Google's JAX framework for accelerated automatic differentiation, which…