activity
20102025
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 · 3.5k across the 20 of their papers we have counts for

collaborators

22 papers

astro-ph.SR2025

White Dwarfs with Infrared Excess in the HET Dark Energy Experiment

Rudy A. Morales, Barbara G. Castanheira, Jayden Blanchard +5

White dwarfs with infrared excess emission provide a window into the late stages of stellar evolution and the dynamics of circumstellar environments. Using data from the Hobby-Eber…

astro-ph.HE2023★ 1.9k cited

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

The Event Horizon Telescope Collaboration

We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A), the Galactic center source associated with a supermassive black hole. These observati…

astro-ph.GA2023

Cold gas in the heart of Perseus A

Raffaella Morganti, Suma Murthy, Tom Oosterloo +6

We present new JVLA and VLBA observations tracing the HI in the central region of 3C84 (Perseus A). This radio source is hosted by the bright cluster galaxy NGC 1275 in the centre…

astro-ph.HE2023

Spectral Energy Distributions of Southern Binary X-Ray Sources

John M. Dickey, S. D. Vrtilek, Michael McCollough +5

The rapid variability of X-ray binaries produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to stu…

astro-ph.IM2020★ 1 cited

High-resolution radio astronomy: an outlook for Africa

Leonid I. Gurvits, Robert Beswick, Melvin Hoare +5

Very Long Baseline Interferometry (VLBI) offers unrivalled resolution in studies of celestial radio sources. The subjects of interest of the IAU Symposium No. 356, the Active Galac…

astro-ph.SR2019★ 14 cited

VLBI observations of the G25.65+1.05 water maser superburst

R. A. Burns, G. Orosz, O. Bayandina +23

This paper reports observations of a 22 GHz water maser `superburst' in the G25.65+1.05 massive star forming region, conducted in response to an alert from the Maser Monitoring Org…