Abstract In 2017 April, the Event Horizon Telescope (EHT) observed the near-horizon region
around the supermassive black hole at the core of the M87 galaxy. These 1.3 mm …

Abstract The Event Horizon Telescope (EHT) has mapped the central compact radio source
of the elliptical galaxy M87 at 1.3 mm with unprecedented angular resolution. Here we …

Context. 3C 84 is a nearby radio source with a complex total intensity structure, showing
linear polarisation and spectral patterns. A detailed investigation of the central engine region …

Non-very long baseline interferometry (VLBI) measurements of Faraday rotation at millimetre
wavelengths have been used to constrain mass accretion rates () on to supermassive black …

Abstract As Setti and Woltjer noted back in 1973, one can use quasars to construct the
Hubble diagram; however, the actual application of the idea was not that straightforward. It …

Faraday rotation has been seen at millimeter wavelengths in several low-luminosity active
galactic nuclei, including Event Horizon Telescope (EHT) targets M87* and Sgr A*. The …

Sgr A* represents a unique laboratory for the detailed study of accretion processes around a
low-luminosity supermassive black hole (SMBH). Recent X-ray observations have allowed …

The millimetre bump, as found in high-resolution multiwaveband observations of M87 by
Prieto et al., most possibly comes from the synchrotron emission of thermal electrons in …

Here, we demonstrate that polarization properties show a wide diversity depending on
viewing angles. To simulate images of a supermassive black hole and surrounding plasma …

A solid density target irradiated by a high-intensity laser pulse can become relativistically
transparent, which then allows it to sustain an extremely strong laser-driven longitudinal …