HEPADHigh-Energy Proton and Alpha Detector
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GLE associated with this flare was not observed, though the fluxes of solar protons with energy >700 MeV were recorded with High-Energy Proton and Alpha Particles Detector (HEPAD) on GOES (http://umbra.nascom.nasa .gov/SEP/).
We used data of the HEPAD detector onboard GOES-10 and -12 and found the high-energy (>700 MeV) proton onset of the SPE between 19:45 and 19:55 (see Figure 13).
We used data of HEPAD detectors onboard GOES 10 and 12 to determine the onset time of high-energy protons during SPE on November 4, 2003.