Reconstructing Video from Interferometric Measurements of Time-Varying Sources

Understand

Very long baseline interferometry (VLBI) makes it possible to recover images of astronomical sources with extremely high angular resolution.

• 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.
• VLBI provides measurements related to the underlying source image through a sparse set spatial frequencies.
• An image can then be recovered from these measurements by making assumptions about the underlying image.