Physics Department Seminar | University of Alaska Fairbanks |
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J O U R N A L C L U B |
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The gravity wave event observed on August 17, 2017, and it implications for understanding of mechanisms for producing heavy elements |
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Mark Conde |
Physics Department and Geophysical Institute |
ABSTRACT On October 16 it was announced that the LIGO/VIRGO gravitational wave detection collaborative had observed an event at 12:41:04 UTC on August 17 2017. The creatively-named "GW170817" event is now the fifth confirmed the gravity wave detection. Nevertheless, it is proving far more interesting than its predecessors. 1.7 seconds after GW170817, the NASA Fermi and ESA INTEGRAL satellites observed a gamma-ray burst which, in an extraordinary coincidence, was found to be named "GRB 170817A". Only 10.9 hours after the gravitational wave detection, the Swope Supernova Survey collaborative identified an optical counterpart (named SSS17a) located in the nearby elliptical galaxy NGC 4993. This galaxy is only 130 million light-years distant and was discovered within the constellation Hydra in 1789 by William Herschel. These near-coincident detections galvanized the astronomy community into an extraordinary global collaboration to observe and understand the event. |
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Friday, 3 November 2017 |
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Globe Room, Elvey Building | ||
3:45 PM |