Oscillation of high energy neutrinos in choked GRBs
- 75 Downloads
It is believed that choked gamma-ray bursts (CGRBs) are the potential candidates for the production of high energy neutrinos in GeV–TeV energy range. These CGRBs outnumber the successful GRBs by many orders. So it is important to observe neutrinos from these cosmological objects with the presently operating neutrino telescope IceCube. We study the three-flavor neutrino oscillation of these high energy neutrinos in the presupernova star environment which is responsible for the CGRB. For the presupernova star we consider three different models and calculate the neutrino oscillation probabilities, as well as neutrino flux on the surface of these star. The matter effect modifies the neutrino flux of different flavors on the surface of the star. We have also calculated the flux of these high energy neutrinos on the surface of the Earth. We found that for neutrino energies below ≤10 TeV the flux ratio does not amount to 1:1:1, whereas for higher energy neutrinos it does.
KeywordsNeutrino Oscillation Neutrino Flux Oscillation Probability Polytropic Index Neutrino Telescope
We are thankful to the anonymous referee for his valuable comments and suggestions. S.S. is thankful to Departamento de Fisica de Universidad de Los Andes, Bogota, Colombia, for their kind hospitality during his several visits. We thank Karla Patricia Varela for helpful discussions. This work is partially supported by DGAPA-UNAM (Mexico) Project No. IN103812.