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Recent Podcast
A Tour of The Big, Bad & Beautiful Universe with Chandra
A Tour of The Big, Bad & Beautiful Universe with Chandra
To celebrate the 15th anniversary of NASA's Chandra X-ray Observatory, we have released four new images of supernova remnants. These show Chandra's ability to study the remains of supernova explosions, using images that are the sharpest available in X-ray astronomy. The images of the Tycho and G292.0+1.8 supernova remnants show how Chandra can trace the expanding debris of an exploded star. The images show shock waves, similar to sonic booms from a supersonic plane, that travel through space at speeds of millions of miles per hour. The images of the Crab Nebula and 3C58 show the effects of very dense, rapidly spinning neutron stars created when a massive star explodes. These neutron stars can create clouds of high-energy particles that glow brightly in X-rays. The image for G292 shows oxygen (yellow and orange), and other elements such as magnesium (green) and silicon and sulfur (blue) that were forged in the star before it exploded. For the other images, the lower energy X-rays are shown in red and green and the highest energy X-rays are shown in blue. (2014-07-22)


NGC 1399 in 60 Seconds

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Narrator (Megan Watzke, CXC): Evidence from NASA's Chandra X-ray Observatory and the Magellan telescopes in Chile suggest that a star has been torn apart by an intermediate-mass black hole. In this image, x-rays from Chandra are shown in blue and are overlaid on an optical image from the Hubble Space Telescope in the galaxy known as NGC 1399. The Chandra observations show that one of these objects is a so-called ultraluminous x-ray source, or ULX. ULXs are an unusual class of objects. They emit more x-rays than any known star, but less than the bright x-ray sources associated with supermassive black holes. They may actually be an elusive middle-sized black hole that astronomers have been looking for. If confirmed, this latest discovery from Chandra would be a cosmic double-play. It would be strong evidence for this intermediate-mass black hole, and it would mark the first time such a black hole has been caught tearing apart an entire star.

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