Search for low-energy νe,μ,τ and ν¯e,μ,τ in coincidence with BATSE gamma-ray bursts.

Details Search for low-energy νe,μ,τ and ν¯e,μ,τ in coincidence with BATSE gamma-ray bursts. Search for low-energy νe,μ,τ and ν¯e,μ,τ in coincidence with BATSE gamma-ray bursts.

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ncimc..18..457a&link_type=abstract

Nuovo Cimento C, Vol. 18C, N. 5, p. 457 - 462

Astronomy and Astrophysics

Astrophysics

1

Gamma-Ray Bursts: Neutrinos

Scientific paper

Since neutrinos and gamma-rays productions are often associated in many astrophysical processes, the detection of neutrinos in correlation with γ-ray bursts (GRBs) could be a very important step towards the discovery of the sources of these events. A search for low-energy neutrinos of all flavours in correlation with ≡200 γ-ray bursts detected by BATSE aboard the Compton Observatory has been performed by the LSD (Liquid-Scintillator Detector) neutrino telescope. This kind of telescope, differently from the water Cerenkov detectors, is also sensitive to νμ,τ and ν¯μ,τ fluxes, through the charged- and neutral-current interactions of neutrinos with carbon nuclei. No νe,μ,τ or ν¯e,μ,τ candidate has been detected by LSD during the time interval in which BATSE detected 90% of the photon flux for any of the GRBs analysed. The corresponding upper limits to the neutrino fluxes, summed over 197 GRBs, are: F(ν¯e) ≤ 1.5·1011cm-2, 9 ≤ Ev ≤ 50 MeV, F(ν¯e) ≤ 2.5·1010cm-2, 20 ≤ Ev ≤ 50 MeV, F(νe) ≤ 5.1·1011cm-2, 25 ≤ Ev ≤ 50 MeV, F(νμ,τ) ≤ 7.5·1012cm-2, 20 ≤ Ev ≤ 100 MeV, F(ν¯μ,τ) ≤ 7.9·1012cm-2, 20 ≤ Ev ≤ 100 MeV.

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