Swift satellite sees eruption from extreme long distances
Tuesday, April 28, 2009
A gamma flits from light last Thursday, was caught by the Swift satellite of the NASA Space Agency, the record of the earliest and most distant object in the universe broken.
After the detection knew several teams of researchers, including two groups using telescopes in Chile and Hawaii, the fading of the eruption nagloed study in infrared light. Using the data known about its red shift, caused by the expansion of the universe, knew that to determine the gamma-burst 'only' six hundred million years after the big bang took place. This means that the radiation in the explosion was about 13.1 billion years it has done to our planet to reach. That is so far back in time, it is meaningless to a certain distance to the object to know, since the universe after the occurrence of gamma flits is expanded.
From the perspective of the eruption created the Earth about 8.5 billion years later. With a redshift of 8.2 'beats' the object the previous record holder, an eruption last year was seen by a shift of 6.7. The most distant galaxy where to this day has been interrupted has a redshift of 6.96. Because gamma-bursts in most cases occur when a massive star explodes, the discovery showed that these stars soon after the 'Big Bang' was formed. Upcoming Thursday more out about the discovery at a special press conference.
More information: "The farthest thing ever seen" (Sky and Telescope)
Translated version of http://www.skyandtelescope.com/news/home/43700627.html