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Technion-CERN Scientists Predict Supernova
Geneva - Apr 22, 2003 A team of theoretical physicists, Shlomo Dado and Arnon Dar at the Technion, Israel Institute of Technology and Alvaro De Rujula CERN, the European Center for Nuclear Research, in Geneva, Switzerland, has developed a theory to account for the mysterious gamma ray bursts that come from the depths of the Universe. According to their ideas, gamma ray bursts are linked to supernovae, the cataclysmic explosions of massive stars at the end of their lives. When a new gamma ray burst was seen on March 29, 2003, the CERN-Technion team immediately predicted that light from a supernova would first become clearly visible on Earth from the same direction on April 8. And so it did. This is the first time that physicists have predicted the exact day of observation of a supernova. Until now, astronomers could not predict the supernova explosion time to an accuracy better than a million years! Although particle physics and cosmology study opposite extremes -- particle physics is a study of the tiny building blocks of nature, cosmology the large scale workings of the Universe -- the questions they ask are intimately linked. This latest result is a concrete example of the interplay between the two fields. The observational discovery was made on April 8 with the 6.5 meter MMTO and the 6.5 meter Magellan telescope operated by teams from the Harvard Center for Astrophysics in Cambridge, MA, USA and other USA universities. Related Links CERN SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express
Astronomers Stretch Celestial Yardstick to New Lengths
Baltimore - Apr 14, 2003Astronomers' "yardstick" for measuring vast distances across the cosmos grew longer today as scientists at The Johns Hopkins University announced they had identified and closely analyzed two distant new instances of a kind of exploding star known as a Type Ia supernova. |
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