NASAs Fermi Spots Superflares in the Crab Nebula
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NASA's Fermi Spots 'Superflares' in the Crab Nebula

January 11, 2013
Fermi's LAT discovered a gamma-ray 'superflare' from the Crab Nebula on April 12, 2011. These images show the number of gamma rays with energies greater than 100 million electron volts from a region of the sky centered on the Crab Nebula. Both views eliminate emission form the Crab pulsar by showing the sky in between its pulses. In both images, the bright source below is the Geminga pulsar. At left, the region 20 days before the flare; at right, April 14. Credit: NASA/DOE/Fermi LAT/R. Buehler

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