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Thread: Brightest Explosion In the Universe Ever Seen

  1. #1 Brightest Explosion In the Universe Ever Seen 
    Forum Radioactive Isotope cosmictraveler's Avatar
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    A mysterious blast of light spotted earlier this year near the constellation Leo was actually the brightest gamma-ray burst ever recorded, and was triggered by an extremely powerful stellar explosion, new research reports.
    On April 27, several satellites including NASA's Swift satellite and Fermi Gamma-ray Space Telescope observed an unusually bright burst of gamma radiation. The explosion unleashed an energetic jet of particles that traveled at nearly the speed of light, researchers said.
    "We suddenly saw a gamma-ray burst that was extremely bright a monster gamma-ray burst," study co-author Daniele Malesani, an astrophysicist at the Niels Bohr Institute at the University of Copenhagen in Denmark, said in a statement. "This [was] one of the most powerful gamma-ray bursts we have ever observed with the Swift satellite."

    http://www.google.com/url?sa=t&rct=j...PBb47yuOXyxW-Q


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    Forum Radioactive Isotope sculptor's Avatar
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    Gamma radiation bursts have been claimed as responsible for some extinction events.
    We cannot actually "see" gamma radiation except via instruments that detect the wavelength?
    Effect on earth's atmosphere?


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    Cooking Something Good MacGyver1968's Avatar
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    What's a "relativistic shock"?

    "The really cool thing about this GRB is that because the exploding matter was traveling at [nearly] the speed of light, we were able to observe relativistic shocks," study co-author Giacomo Vianello, a postdoctoral scholar at Stanford University in California, said in a statement. "We cannot make a relativistic shock in the lab, so we really don't know what happens in it, and this is one of the main unknown assumptions in the model. These observations challenge the models and can lead us to a better understanding of physics."
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