Detected the brightest explosion in the known universe


16/06/2011

A new type of supernova explosion, which is at least ten times brighter than any other supernova.

"For about a hundred years of studying supernovae, we believed that they had seen everything already, so it was a big surprise," - said the head of research, Robert Quimby, an astronomer at the California Institute of Technology in Pasadena.

"It’s amazing that only now, after all this time, we find a completely new class of events, which overshadows all other supernovae." Supernovae are considered as the most intense and active events in the universe that can easily outshine a few weeks of its radiation even their galaxy. Supernovae occur when a star with a mass of at least ten of our Suns, graduating its existence and explode.

Formed a rotating hot core, called a neutron star, which is surrounded by rapidly expanding cloud of glowing gas. Their bright explosions are used to measure large distances in the universe.

Quimby with the team recently came across six unusually bright supernovae, using the observations of Samuel Oschina Telescope at Palomar Observatory.

"The stars show a much slower increase in brightness than expected. At achieving peak takes them a month or two, while a typical supernova does it in just 17 days," - he said.

"Then there is three times faster than normal, reducing their brightness. We do not know what feeds these monsters at this stage should be a place of some exotic process."

According to one theory, a few years before the explosion of stars around it formed a bubble of hot gas that reaches the masses, at least a hundred suns.

After the explosion, radioactive materials stand out, which cut into the bladder and lead to such an unusually bright glow, said Quimby, whose study is published in the journal Nature.

Original: News.nationalgeographic


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