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Black Hole

Astronomers Believe They Have Spotted the First Known Light Flare From a Pair of Colliding Black Holes Black Hole

Astronomers Believe They Have Spotted the First Known Light Flare From a Pair of Colliding Black Holes

This artist’s concept shows a supermassive black hole surrounded by a disk of gas. Embedded in this disk are two smaller black holes that may have merged together to form a new black hole.Image credit: Caltech/R. Hurt (IPAC) In a first, astronomers may have seen light from the merger of…
bubmag
June 27, 2020
An acoustic black hole Black Hole

An acoustic black hole

An elegant experiment showing that acoustic waves are amplified after scattering by a rotating body demonstrates an effect predicted in 1971 by Yakov Zel’dovich. This result has implications for the understanding of scattering from black holes. Fig. 1: A simple setup to measure Zel’dovich amplification. References1.Zel’dovich, Y. P. JETP Lett.…
bubmag
June 22, 2020