Events in Physics
Wednesday, October 14, 2009
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Prof. Nial Tanvir, University of LeicesterThe universe at 630 million years after the Big Bang:
What we can learn from GRB 090423 Gamma-ray bursts, by virtue of their extreme luminosities, provide powerful probes of the distant universe. They pinpoint their star-forming host galaxies and allow measurements of the state of the interstellar- and intergalactic-medium along the line of sight. I will discuss what we are learning from such studies, focusing in particular on GRB 090423 which, at redshift z=8.2, is the most distant object known in the universe. |