Pre-burst neutrinos of gamma-ray bursters accompanied by high-energy photons

Previous researches on high-energy neutrino events from gamma-ray bursters (GRBs) suggest a speed variation v(E)=c(1±E/ELV?) with ELV?=(6.4±1.5)×1017 GeV, together an intrinsic time difference ?tin=(?2.8±0.7)×102 s, which means that neutrinos come out about 300 s earlier than low-energy photons in the source reference system. Considering possibility pre-bursts of may be accompanied by photons, this work we search for photon emission 100 to 1000 before at analyzing Fermi Gamma-ray Space Telescope (FGST) data. We perform searching energies larger MeV, and find 14 48 GRBs known redshifts. Combining these 1.07TeV event observed Major Atmospheric Gamma Imaging Cherenkov telescopes (MAGIC), pre-burst stage long duration period several minutes high energy emissions GRB source.