Oscillation of high-energy neutrinos from choked jets in stellar and merger ejecta

Jose Alonso Carpio, Kohta Murase

Research output: Contribution to journalArticle

Abstract

We present a comprehensive study on oscillation of high-energy neutrinos from two different environments: blue supergiant progenitors that may harbor low-power gamma-ray burst (GRB) jets and neutron star merger ejecta that would be associated with short gamma-ray bursts. We incorporate the radiation constraint that gives a necessary condition for nonthermal neutrino production, and account for the time evolution of the jet, which allows us to treat neutrino oscillation in matter more accurately. For massive star progenitors, neutrino injection inside the star can lead to nonadiabatic oscillation patterns in the early stages between 1 TeV and 10 TeV and is also visible in the flavor ratio. The matter effects predict a νe excess in the 10 TeV-100 TeV range. For neutron star merger ejecta, we find a similar behavior in the 100 GeV-10 TeV region and the oscillation may result in a νe excess around 1 TeV. These features, which enable us to probe the progenitors of long and short GRBs, could be seen by future neutrino detectors with precise flavor ratio measurements. We also discuss potential contributions to the diffuse neutrino flux measured by IceCube, and find parameter sets allowing choked low-power GRB jets to account for the neutrino flux in the 10 TeV-100 TeV range without violating the existing constraints.

Original languageEnglish (US)
Article number123002
JournalPhysical Review D
Volume101
Issue number12
DOIs
StatePublished - Jun 15 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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