‘Radio phoenix’ rises from the ashes of galaxy cluster collision

28 August 2015 Astronomy Now

Astronomers have found evidence for a faded electron cloud “coming back to life,” much like the mythical phoenix, after two galaxy clusters collided. This “radio phoenix,” so-called because the high-energy electrons radiate primarily at radio frequencies, is found in Abell 1033. This galaxy cluster collision is located about 1.6 billion light-years from Earth.