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Detection prospects for GeV neutrinos from collisionally heated gamma-ray bursts with IceCube/DeepCore
I Bartos1, A M Beloborodov1, K Hurley2
1Department of Physics, Columbia University, New York, New York 10027, USA and Columbia Astrophysics Laboratory, Columbia University, New York, New York 10027, USA.
Abstract:
Jet reheating via nuclear collisions has recently been proposed as the main mechanism for gamma-ray burst (GRB) emission. In addition to producing the observed gamma rays, collisional heating must generate 10-100 GeV neutrinos, implying a close relation between the neutrino and gamma-ray luminosities. We exploit this theoretical relation to make predictions for possible GRB detections by IceCube + DeepCore. To estimate the expected neutrino signal, we use the largest sample of bursts observed by the Burst and Transient Source Experiment in 1991-2000. GRB neutrinos could have been detected if IceCube + DeepCore operated at that time. Detection of 10-100 GeV neutrinos would have significant implications, shedding light on the composition of GRB jets and their Lorentz factors. This could be an important target in designing future upgrades of the IceCube + DeepCore observatory.