| Summary: | We estimate the high energy neutrino flux from the giant flare of SGR 1806-20 on December 27, 2004, which irradiated Earth with a gamma-ray flux ~10^4 times larger than the most luminous gamma-ray bursts (GRBs) ever detected. The Antarctic Cherenkov neutrino detector AMANDA was on-line during the flare, and may either have detected high energy neutrinos for the first time from a cosmic point source, or put constraints on the flare mechanism of magnetars. If TeV neutrinos are detected, one would expect also detectable EeV cosmic rays and possibly TeV gamma-ray emission in coincidence.
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