Contributed Talk - Splinter Stellar

Friday, 25 September 2020, 15:17   (virtual room M)

High-Energy Neutrino Emission From Common Envelope Jets Supernova (CEJSN) impostors

Aldana Grichener
Technion - Israel Institute of Technology

We study high-energy neutrino emission from ultra-relativistic jets launched by a black hole (BH) spiraling-in inside the envelope of a red supergiant (RSG), and find that such common envelope jets supernova (CEJSN) impostors are a potential source for the 10^12−10^15 eV neutrinos detected by IceCube. Neutrinos and correlated gamma-rays result from photohadronic interactions and subsequent pion decays that occur inside the jets. As the jets do not penetrate the envelope gamma rays do not escape from the envelope while neutrinos stream freely, explaining the lack of observational association between high-energy neutrinos and gamma-rays. Since the BH does not reach the core the binary system is not destroyed, and the event is termed CEJSN impostor.