A 14 hour Chandra observation of the supernova remnant Cassiopeia A has given the best map yet of heavy elements ejected in a supernova explosion. Upper left: Broadband X-ray image of Cassiopeia A (Cas A) Upper right: Image made by X rays from silicon ions. Lower left: Image made by X rays from calcium ions. Lower right: Image made by X rays from iron ions. All images are 28.2 light years at a distance of 11, 000 light years and designed to show the distribution of some of the elements ejected in the explosion that produced Cas A. The elements are part of a gas that has a temperature of about 50 million degrees Celsius. The colors represent intensity of X rays, with yellow the most intense, then red, purple, and green. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / U.Hwang et al. / GSFC / NASA |
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