Detailed Fermi LAT View of GRB 130427A (IMAGE)

NASA/Goddard Space Flight Center

Detailed Fermi LAT View of GRB 130427A

Caption

This animation shows a more detailed Fermi LAT view of GRB 130427A. The sequence shows high-energy (100 Mev to 100 GeV) gamma rays from a 20-degree-wide region of the sky starting three minutes before the burst to 14 hours after. Following an initial one-second spike, the LAT emission remained relatively quiet for the next 15 seconds while Fermi's GBM instrument showed bright, variable lower-energy emission. Then the burst re-brightened in the LAT over the next few minutes and remained bright for nearly half a day.

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NASA/DOE/Fermi LAT Collaboration

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