Tuesday, May 31, 2011

Cosmic explosion is new candidate for most distant object in the universe

May 25, 2011 - Astronomy.com
A gamma-ray burst detected by NASA's Swift satellite in April 2009 has been newly unveiled as a candidate for the most distant object in the universe. At an estimated distance of 13.14 billion light-years, the burst lies far beyond any known quasar and could be more distant than any previously known galaxy or gamma-ray burst (GRB). ...
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Less than a week after the record-setting GRB 090423 made headlines around the world, this new burst, GRB 090429B, appeared in the sky with suspiciously similar properties. As with the previous burst, GRB 090429B was a short-lived event, lasting less than 10 seconds, and automated Swift observations showed it to have a relatively faint X-ray afterglow. Cucchiara, then a graduate student at Penn State, woke up in the early morning hours to direct observations at the Gemini North telescope on Mauna Kea, Hawaii, that he hoped would pin down the nature of this burst. ...
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