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Probing jet dynamics and collimation in radio galaxies. Application to NGC 1052
Ainara Saiz-Pérez, Christian M. Fromm, Manel Perucho +5
Context. Radio galaxies with visible two-sided jet structures, such as NGC 1052, are sources of particular interest to study the collimation and shock structure of active galactic…
Multi-Frequency Models of Black Hole Photon Rings from Low-Luminosity Accretion Disks
Tejahni Desire, Alejandro Cárdenas-Avendaño, Andrew Chael
Images of black holes encode both astrophysical and gravitational properties. Detecting highly-lensed features in images can differentiate between these two effects. We present an…
First Very Long Baseline Interferometry Detections at 870μm
Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada +276
The first very long baseline interferometry (VLBI) detections at 870m wavelength (345GHz frequency) are reported, achieving the highest diffraction-limited angular resolutio…
Signatures of Black Hole Spin and Plasma Acceleration in Jet Polarimetry
Zachary Gelles, Andrew Chael, Eliot Quataert
We study the polarization of black hole jets on scales of and show that large spatial swings in the polarization occur at three characteristic distances from the…
The Black Hole Explorer: Motivation and Vision
Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin +65
We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry…
Hybrid GRMHD and Force-Free Simulations of Black Hole Accretion
Andrew Chael
We present a new approach for stably evolving general relativistic magnetohydrodynamic (GRMHD) simulations in regions where the magnetization becomes large. GRMHD code…