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astro-ph.HE2026

Relativistic Thermal Emission from Accretion Disks in Kerr-MOG Spacetimes

Cheng Liu, Xu-fan Hu, Yosuke Mizuno +1

In Scalar-Tensor-Vector Gravity (STVG, also known as MOG), a massive vector field generates a repulsive fifth force that endows rotating black holes with a gravitational char…

astro-ph.HE2026

Impacts of radiative cooling on the images of a black hole shadow and extended jets in two-temperature GRMHD simulations

Mingyuan Zhang, Yosuke Mizuno, Indu K. Dihingia +4

The recent 230 GHz observations from the Event Horizon Telescope collaboration have successfully imaged the supermassive black hole shadow of the M87 galaxy. However, the relativel…

astro-ph.HE2026★ 1 cited

GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at

Daniëlle L. A. Pieterse, Andrew J. Levan, Maria E. Ravasio +27

We present detailed, multi-wavelength analysis of GRB 210704A: a Fermi Gamma-ray Burst Monitor discovered and Fermi Large Area Telescope (LAT) detected gamma-ray burst (GRB). The b…

astro-ph.HE2026★ 1 cited

Locating the missing large-scale emission in the jet of M87* with short EHT baselines

Boris Georgiev, Paul Tiede, Sebastiano D. von Fellenberg +280

In Very-Long Baseline Interferometric arrays, nearly co-located stations probe the largest scales and typically cannot resolve the observed source. In the absence of large-scale st…

astro-ph.HE2026★ 2 cited

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…

astro-ph.HE2025

Probing the disk-jet coupling in M87

Ainara Saiz-Pérez, Christian M. Fromm, Yosuke Mizuno +3

Context. Recent GMVA observations of M 87 at event horizon scales revealed a ring-like structure which is 50% larger at 86 GHz than the ring observed by the Event Horizon Telescope…