Colliding galaxies 3C442A

Colliding galaxies 3C442A

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Credit: NASA/CXC/NRAO/WORRALL ET AL, U. BRISTOL/SCIENCE PHOTO LIBRARY

Caption: Colliding galaxies 3C442A, combined X-ray and radio image. Hot gas (blue) at centre, heated by the collision of the galaxies to the point where it emits X-rays, is pushing away radio-emitting gas jets (orange). The radio jets, which usually overpower such X-ray heating, are now inactive, but were being powered by a supermassive black hole at the centre of one of the galaxies. 3C442A is some 390 million light years distant, in the constellation of Pegasus. The X-ray data is from the orbiting Chandra X-ray Observatory (CXO). The radio data is from the ground-based Very Large Array (VLA) telescope array. Image published in 2007.

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Keywords: 2007, 3c442a, active, astronomical, astronomy, astrophysical, astrophysics, chandra x-ray observatory, colliding, colliding galaxies, collision, composite, cxo, galactic, galaxy, gas, heated, high energy, hot gas, intergalactic, interstellar, pegasus, quasar, radio, radio jet, radio jets, space, space telescope, supermassive black hole, universe, very large array, vla, x-ray, x-ray source, xray

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