Question

In April 2019, the Event Horizon Telescope collaboration announced that it had made the first spatially resolved images of a black hole, specifically the supermassive black hole in the center of the M87 galaxy. Using a wavelength of 1.3 mm, the EHT managed to achieve a resolution of approximately 1.2 x 10-10 radians.

a) What is the diameter of the primary aperture of the EHT? How does this compare to the diameter of the Earth?

b) Research the Event Horizon Telescope and report back on whether your result makes sense.

Answer 1