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Reference Array and Design Consideration for the next-generation Event Horizon Telescope

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arxiv 2306.08787 v3 pith:WTXVASAO submitted 2023-06-14 astro-ph.IM

Sheperd S. Doeleman , John Barrett , Lindy Blackburn , Katherine Bouman , Avery E. Broderick , Ryan Chaves , Vincent L. Fish , Garret Fitzpatrick
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Antonio Fuentes Mark Freeman José L. Gómez Kari Haworth Janice Houston Sara Issaoun Michael D. Johnson Mark Kettenis Laurent Loinard Neil Nagar Gopal Narayanan Aaron Oppenheimer Daniel C. M. Palumbo Nimesh Patel Dominic W. Pesce Alexander W. Raymond Freek Roelofs Ranjani Srinivasan Paul Tiede Jonathan Weintroub Maciek Wielgus
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We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (ngEHT). This program - the next-generation Event Horizon Telescope (ngEHT) - will form a networked global array of radio dishes capable of making high-fidelity real-time movies of supermassive black holes (SMBH) and their emanating jets. This builds upon the EHT principally by deploying additional modest-diameter dishes to optimized geographic locations to enhance the current global mm/submm wavelength Very Long Baseline Interferometric (VLBI) array, which has, to date, utilized mostly pre-existing radio telescopes. The ngEHT program further focuses on observing at three frequencies simultaneously for increased sensitivity and Fourier spatial frequency coverage. Here, the concept, science goals, design considerations, station siting and instrument prototyping are discussed, and a preliminary reference array to be implemented in phases is described.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The glow of eternal black holes

    gr-qc 2026-08 accept novelty 6.0 of 10

    An eternal Schwarzschild black hole with an emitting surface at r=r_m would show a bright spot inside its shadow, whose interferometric visibility decays exponentially with baseline length.

  2. Dark matter environments and safeguards for spacetime inference from horizon scale interferometry

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Using public 2017 M87* closure data, a frozen Kerr source fails an absolute adequacy test and the differential tidal-charge response fails numerical convergence, so no posterior or bound is reported.

  3. Analyzing Deflection Angles and Photon Sphere Dynamics of Magnetically Charged Black Holes in Nonlinear Electrodynamic

    gr-qc 2025-02 reject novelty 4.0 of 10

    A new closed-form weak deflection angle and shadow analysis for a magnetically charged NED black hole, with strong-field results that reduce to Schwarzschild after a mass redefinition.

  4. Active Galactic Nuclei as high-energy neutrino sources

    astro-ph.HE 2026-06 unverdicted novelty 2.5 of 10

    Review summarizing correlations between astrophysical neutrinos and gamma-ray/radio AGN, specific source associations, proposed production mechanisms, and future prospects.

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