High Energy Neutrinos from Choked Gamma-Ray Bursts in AGN Accretion Disks

Abstract

Both long-duration gamma-ray bursts (LGRBs) from core collapse of massive stars and short-duration GRBs (SGRBs) from mergers of binary neutron star (BNS) or neutron star--black hole (NSBH) are expected to occur in the accretion disk of active galactic nuclei (AGNs). We show that GRB jets embedded in the migration traps of AGN disks are promised to be choked by the dense disk material. Efficient shock acceleration of cosmic rays at the reverse shock is expected, and high-energy neutrinos would be produced. We find that these sources can effectively produce detectable TeV--PeV neutrinos through $p\gamma$ interactions. From a choked LGRB jet with isotropic equivalent energy of $10^{53}\mathrm{erg}$ at $100\mathrm{Mpc}$, one expects $\sim 2(7)$ neutrino events detectable by IceCube (IceCube-Gen2). The contribution from choked LGRBs to the observed diffuse neutrino background depends on the unknown local event rate density of these GRBs in AGN disks. For example, if the local event rate density of choked LGRBs in AGN disk is $\sim 5\%$ that of low-luminosity GRBs $(\sim 10{\mathrm{Gpc}}^{-3}{\mathrm{yr}}^{-1})$, the neutrinos from these events would contribute to $\sim 10\%$ of the observed diffuse neutrino background. Choked SGRBs in AGN disks are potential sources for future joint electromagnetic, neutrino, and gravitational wave multi-messenger observations.

9 pages, 4 figures, 1 table, accepted for publication in ApJL

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Cited by in corpus (3)

• Population Properties of Gravitational-Wave Neutron Star--Black Hole Mergers
• On the Terminal Spins of Accreting Stars and Planets: Boundary Layers
• High-energy Neutrinos from Stellar Explosions in Active Galactic Nuclei Accretion Disks