4.3k citations · 5.2k across the 9 of their papers we have counts for
6 papers · 1 filter
Horizon-scale variability of M87* from 2017--2021 EHT observations
The Event Horizon Telescope Collaboration
We report three epochs of polarized images of M87* at 230\,GHz using data from the Event Horizon Telescope (EHT) taken in 2017, 2018, and 2021. The baseline coverage of the 2021 ob…
First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multi-wavelength Observations, Data Processing, and Calibration
The Event Horizon Telescope Collaboration
We present Event Horizon Telescope (EHT) 1.3 mm measurements of the radio source located at the position of the supermassive black hole Sagittarius A* (Sgr A*), collected during th…
ALMA Observations of the Terahertz Spectrum of Sagittarius A*
Geoffrey C. Bower, Jason Dexter, Keiichi Asada +11
We present ALMA observations at 233, 678, and 870 GHz of the Galactic Center black hole, Sagittarius A*. These observations reveal a flat spectrum over this frequency range with sp…
What is the Hidden Depolarization Mechanism in Low Luminosity AGN?
Geoffrey C. Bower, Jason Dexter, Sera Markoff +2
Millimeter wavelength polarimetry of accreting black hole systems can provide a tomographic probe of the accretion flow on a wide range of linear scales. We searched for linear pol…
Self-consistent spectra from radiative GRMHD simulations of accretion onto Sgr A*
Samia Drappeau, Salomé Dibi, Jason Dexter +2
We present the first spectral energy distributions produced self-consistently by 2.5D general relativistic magneto-hydrodynamical (GRMHD) numerical simulations, where radiative coo…
GRMHD simulations of accretion onto Sgr A*: How important are radiative losses?
Salomé Dibi, Samia Drappeau, P. Chris Fragile +2
We present general relativistic magnetohydrodynamic (GRMHD) numerical simulations of the accretion flow around the supermassive black hole in the Galactic centre, Sagittarius A* (S…