88 citations · 227 across the 8 of their papers we have counts for
8 papers
Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign
G. Principe, J. C. Algaba, E. Aviano +529
The archetypal blazar 3C 279 hosts a prominent relativistic jet and exhibits strong broadband variability across the electromagnetic spectrum. In April 2017, the Event Horizon Tele…
Lensing of hot spots in Kerr spacetime: An empirical relation for black hole spin estimation
A. I. Yfantis, D. C. M. Palumbo, M. Mościbrodzka
Sagittarius A* (Sgr A*) exhibits frequent flaring activity across the electromagnetic spectrum, often associated with a localized region of strong emission, known as a hot spot. We…
Hot-spots around Sagittarius A*: Joint fits to astrometry and polarimetry
A. I. Yfantis, M. Wielgus, M. A. Mościbrodzka
Observations of Sagittarius A* (Sgr A*) in near-infrared (NIR) show irregular flaring activity. Flares coincide with astrometric rotation of brightness centroid and with looping pa…
Characterization of black hole accretion through image moment invariants
A. Jiménez-Rosales, A. I. Yfantis, M. A. Mościbrodzka +1
We apply image moment invariant analysis to total intensity and polarimetric images calculated from general relativistic magnetohydrodynamic simulations of accreting black holes. W…
Fitting the light curves of Sagittarius A* with a hot-spot model
A. I. Yfantis, M. A. Mościbrodzka, M. Wielgus +2
Sagittarius A* exhibits frequent flaring activity across the electromagnetic spectrum. Signatures of an orbiting hot spot have been identified in the polarized millimeter wavelengt…
VLBI imaging of black holes via second moment regularization
S. Issaoun, M. D. Johnson, L. Blackburn +3
The imaging fidelity of the Event Horizon Telescope (EHT) is currently determined by its sparse baseline coverage. In particular, EHT coverage is dominated by long baselines, and i…
RAPTOR I: Time-dependent radiative transfer in arbitrary spacetimes
Thomas Bronzwaer, Jordy Davelaar, Ziri Younsi +4
Observational efforts to image the immediate environment of a black hole at the scale of the event horizon benefit from the development of efficient imaging codes that are capable…
Persistent Asymmetric Structure of Sagittarius A* on Event Horizon Scales
Vincent L. Fish, Michael D. Johnson, Sheperd S. Doeleman +69
The Galactic Center black hole Sagittarius A* (Sgr A*) is a prime observing target for the Event Horizon Telescope (EHT), which can resolve the 1.3 mm emission from this source on…