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CID-42, Galaxy Quasar with Recoiling Black Hole, X-Ray Image. Evidence for a recoiling black hole has been found using data from the Chandra X-ray Observatory, XMM-Newton, the HST, and several ground-based telescopes. A new paper reports that this black hole kickback was caused either by a slingshot effect produced in a triple black hole system, or from the effects of gravitational waves produced after two supermassive black holes merged a few million years earlier. The discovery of this object, comes from a large, multi-wavelength survey, known as the Cosmic Evolution Survey (COSMOS). Of the 2, 600 X-ray sources found in COSMOS, only one, named CID-42 and located in a galaxy about 3.9 billion light years away, coincides with two very close, compact optical sources. In this image, the X-ray source detected by Chandra is colored blue. Release date June 30, 2010.
