Search Results
SYMBA: An end-to-end VLBI synthetic data generation pipeline
These studies are important when proposing observations of new sources, in the characterization of the capabilities of new or upgraded instruments, and when verifying model-based theoretical predictions in a comparison with observational data.
Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
This stage allowed us to avoid shared human bias and to assess common features among independent reconstructions.
Astrophysics of Galaxies Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology
The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA
Our long-baseline detections to ALMA also provide new constraints on the scattering of Sgr A*, and we show that refractive scattering effects are likely to be weak for images of Sgr A* at 1. 3 mm with the Event Horizon Telescope.
High Energy Astrophysical Phenomena
A Model for Anisotropic Interstellar Scattering and its Application to Sgr A*
For expected values of the inner scale, the scattering kernel for all models is markedly non-Gaussian at 1. 3 mm but is straightforward to calculate and depends only weakly on the assumed model for the wandering of the magnetic field direction.
High Energy Astrophysical Phenomena
Dynamical Imaging with Interferometry
By linking widely separated radio dishes, the technique of very long baseline interferometry (VLBI) can greatly enhance angular resolution in radio astronomy.
Instrumentation and Methods for Astrophysics
Reconstructing Video from Interferometric Measurements of Time-Varying Sources
Most recently, the Event Horizon Telescope (EHT) has extended VLBI to short millimeter wavelengths with a goal of achieving angular resolution sufficient for imaging the event horizons of nearby supermassive black holes.
Stochastic Optics: A Scattering Mitigation Framework for Radio Interferometric Imaging
We present a scattering mitigation framework for radio imaging with very long baseline interferometry (VLBI) that partially overcomes this limitation.
Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
High Resolution Linear Polarimetric Imaging for the Event Horizon Telescope
Polarimetric MEM is thus an attractive choice for image reconstruction with the
Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
Filamentary structures as the origin of blazar jet radio variability
Supermassive black holes at the centre of active galactic nuclei power some of the most luminous objects in the Universe.
High Energy Astrophysical Phenomena Astrophysics of Galaxies
Interferometric Imaging Directly with Closure Phases and Closure Amplitudes
Closure-only imaging provides results that are as non-committal as possible and allows for reconstructing an image independently from separate amplitude and phase self-calibration.
Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena
