Obraz horizontu

Imaging Horizon of a Black Hole by Michal Bursa and Vladimír Karas.

Title of this article may sound like a contradiction: Cosmic black holes do not emit their own radiation and they cannot be seen in a telescope. But will astronomers be ever able to image the immediate vicinity of the black hole horizon, where matter swirles just before plunging into the hole interior? We discuss prospects for future interferometry techniques which will reach sufficient resolving power to show structures of the size of one gravitational radius.

This will allow astronomers to detect various processes that occur in plasma as it enters the black hole.