Extremely long baseline interferometry with Origins Space Telescope

Abstract

Operating 1.5 million km from Earth at the Sun-Earth L2 Lagrange point, the Origins Space Telescope equipped with a slightly modified version of its HERO heterodyne instrument could function as a uniquely valuable node in a VLBI network. The unprecedented angular resolution resulting from the combination of Origins with existing ground-based millimeter/submillimeter telescope arrays would increase the number of spatially resolvable black holes by a factor of a million, permit the study of these black holes across all of cosmic history, and enable new tests of general relativity by unveiling the photon ring substructure in the nearest black holes.

arXiv commentAstro2020 APC white paper; 9 pages, 2 figures

References in corpus (4)

• RadioAstron -- a Telescope with a Size of 300 000 km: Main Parameters and First Observational Results
• Black hole formation in the early universe
• Testing the No-Hair Theorem with Event Horizon Telescope Observations of Sagittarius A*
• RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations

Cited by in corpus (4)

• Observing the Inner Shadow of a Black Hole: A Direct View of the Event Horizon
• Photon rings of spherically symmetric black holes and robust tests of non-Kerr metrics
• Reflection-asymmetric wormholes and their double shadows
• The Black Hole Explorer: Motivation and Vision