Studying Black Holes on Horizon Scales with VLBI Ground Arrays

Abstract

High-resolution imaging of supermassive black holes is now possible, with new applications to testing general relativity and horizon-scale accretion and relativistic jet formation processes. Over the coming decade, the EHT will propose to add new strategically placed VLBI elements operating at 1.3mm and 0.87mm wavelength. In parallel, development of next-generation backend instrumentation, coupled with high throughput correlation architectures, will boost sensitivity, allowing the new stations to be of modest collecting area while still improving imaging fidelity and angular resolution. The goal of these efforts is to move from imaging static horizon scale structure to dynamic reconstructions that capture the processes of accretion and jet launching in near real time.

arXiv commentAstro2020 APC White Paper, 10 pages, 7 figures

References in corpus (15)

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• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
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• Methods for detecting flaring structures in Sagittarius A* with high frequency VLBI
• Dynamical Imaging with Interferometry
• First Fringe Detection with VERA's Dual-Beam System and its Phase Referencing Capability
• Metrics and Motivations for Earth-Space VLBI: Time-Resolving Sgr A* with the Event Horizon Telescope
• MeqSilhouette : A mm-VLBI observation and signal corruption simulator
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Cited by in corpus (25)

• Observing the Inner Shadow of a Black Hole: A Direct View of the Event Horizon
• Key Science Goals for the Next-Generation Event Horizon Telescope
• Photon Ring Autocorrelations
• Comparison of the ion-to-electron temperature ratio prescription: GRMHD simulations with electron thermodynamics
• Traversable wormhole solutions with non-exotic fluid in framework of $f(Q)$ gravity
• Universal signatures of singularity-resolving physics in photon rings of black holes and horizonless objects
• Multi-frequency Black Hole Imaging for the Next-Generation Event Horizon Telescope
• The Galactic Center as a laboratory for theories of gravity and dark matter
• First Very Long Baseline Interferometry Detections at 870μm
• Horizonless spacetimes as seen by present and next-generation Event Horizon Telescope arrays
• Rotation in Event Horizon Telescope Movies
• Accretion Flow Morphology in Numerical Simulations of Black Holes from the ngEHT Model Library: The Impact of Radiation Physics
• Enabling Transformational ngEHT Science via the Inclusion of 86 GHz Capabilities
• Analysis of Orbital Configurations for Millimetron Space Observatory
• MeqSilhouette v2: Spectrally-resolved polarimetric synthetic data generation for the Event Horizon Telescope
• New test on the Einstein equivalence principle through the photon ring of black holes
• Orbital configurations of spaceborne interferometers for studying photon rings of supermassive black holes
• Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes
• Observational Signatures of Black Hole Accretion: Rotating vs. Spherical Flows with Tilted Magnetic Fields
• A probabilistic approach to phase calibration: I. Effects of source structure on fringe-fitting
• VLBInet: Radio Interferometry Data Classification for EHT with Neural Networks
• Limiting the Yukawa Gravity through the Black Hole Shadows of Sgr A* and M87*
• Learning a Probabilistic Strategy for Computational Imaging Sensor Selection
• A Prospective ISRO-CfA Himalayan Sub-millimeter-wave Observatory Initiative
• The science case and challenges of space-borne sub-millimeter interferometry