The nuclei of most normal galaxies contain supermassive black holes, which can accrete
gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that …

In this paper we provide a first physical interpretation for the Event Horizon Telescopeʼs
(EHT) 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at …

Abstract Event Horizon Telescope (EHT) observations at 230GHz have now imaged
polarized emission around the supermassive black hole in M87 on event-horizon scales …

Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

Magnetic reconnection in strongly magnetized astrophysical plasma environments is
believed to be the primary process for fast energy release and particle energization …

Hot spots, or plasmoids, which form due to magnetic reconnection in current sheets, are
conjectured to power frequent X-ray and near-infrared flares from Sgr A*, the black hole in …

In this paper we provide a first physical interpretation for the Event Horizon Telescope's
(EHT) 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at …

Wind-fed models offer a unique way to form predictive models of the accretion flow
surrounding Sagittarius A*. We present 3D wind-fed magnetohydrodynamic (MHD) and …

We study the electrodynamics of a kinetically mixed dark photon cloud that forms through
superradiance around a spinning black hole, and design strategies to search for the …

We present two-temperature, radiative general relativistic magnetohydrodynamic
simulations of Magnetically Arrested Discs (MAD) that launch powerful relativistic jets. The …