activity
20062026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 14.3k across the 58 of their papers we have counts for

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Showing 2021Show all

12 papers · 1 filter

astro-ph.GA2021★ 139 cited

Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

Michael Janssen, Heino Falcke, Matthias Kadler +236

Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimeter wavelengths have the power to reveal the launching and initial collimation region of e…

astro-ph.HE2021★ 18 cited

The Variability of the Black-Hole Image in M87 at the Dynamical Time Scale

Kaushik Satapathy, Dimitrios Psaltis, Feryal Ozel +235

The black-hole images obtained with the Event Horizon Telescope (EHT) are expected to be variable at the dynamical timescale near their horizons. For the black hole at the center o…

astro-ph.GA2021★ 13 cited

Subarcsecond LOFAR imaging of Arp299 at 150 MHz. Tracing the nuclear and diffuse extended emission of a bright LIRG

Naím Ramírez-Olivencia, Eskil Varenius, Miguel Pérez-Torres +5

We study for the first time the low-frequency (150 MHz) radio brightness distribution of Arp~299 at subarcsecond resolution, tracing in both compact and extended emission reg…

astro-ph.IM2021★ 88 cited

Sub-arcsecond imaging with the International LOFAR Telescope I. Foundational calibration strategy and pipeline

L. K. Morabito, N. J. Jackson, S. Mooney +71

[abridged] The International LOFAR Telescope is an interferometer with stations spread across Europe. With baselines of up to ~2,000 km, LOFAR has the unique capability of achievin…

gr-qc2021★ 350 cited

Constraints on black-hole charges with the 2017 EHT observations of M87*

Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke +234

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M8…

astro-ph.HE2021★ 89 cited

The Polarized Image of a Synchrotron Emitting Ring of Gas Orbiting a Black Hole

Ramesh Narayan, Daniel C. M. Palumbo, Michael D. Johnson +237

Synchrotron radiation from hot gas near a black hole results in a polarized image. The image polarization is determined by effects including the orientation of the magnetic field i…