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The search for high energy muon neutrinos from southern hemisphere Gamma-Ray Bursts with BUST. We present the results of the analysis of muon neutrino observations by the BUST correlated with observations of more than 1500 gamma-ray bursts from 19 78 to 20 1 3.
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The search for high energy muon neutrinos from southern hemisphere Gamma-Ray Bursts with BUST We present the results of the analysis of muon neutrino observations by the BUST correlated with observationsof more than 1500 gamma-ray burstsfrom 1978 to 2013. V.B. Petkov1, 2 and M.M. Boliev1for the BUST Collaboration 1Institute for Nuclear Research of RAS 2Institute of Astronomy of RAS
X – Z view Y – Z view 45 35 19 8 Muon neutrinos traveling through the rock may interact with nucleons to create energetic muons: νµ + N → µ + X Separation of arrival directions between up and down hemispheres is made by time-of-flight method Dec 14 1978: First upward-going muon was observed
The data were collected during1978 – 2013 years with a live time - 27.72 years 1474 events with θ > 90°, of which 1357 events with θ ≥ 100° Atmospheric muon neutrino, Eν ≥ 1 GeV
A comprehensive gamma-ray burst catalog do not exist to date.The list of GRBs selected for theanalysis (3982 localized GRBs) was obtained from different catalogs; of which 3690 GRBs coincide with the BUST operation periods,of which 1532 GRBs are in the field of view of the BUST (θ≥100°).
Δt = TBUST – TGRB d – angle between directions For each GRB in the dataset, we search for muon neutrino during the time window ± 1000 s and d ≤ 20° d = 28.2° Δt = -426 s
The fluence limit Green’s function represents the fluencelimit on monoenergetic neutrinos at different specific energies. Muon neutrino (antineutrino) effectivearea for the BUST
