Probing the central engine of long gamma-ray bursts and hypernovae with gravitational waves and neutrinos

Understand

There are the two common candidates as the viable energy source for the central engine of long gamma-ray bursts (GRBs) and hypernovae (HNe), neutrino annihilation and magnetic fields.

• We investigate gravitational wave (GW) emission accompanied by these two mechanisms.
• Especially, we focus on GW signals produced by neutrinos from a hyper-accreting disk around a massive black hole.
• We show that neutrino-induced GWs are detectable for $\sim$1 Mpc events by LISA and $\sim$ 100 Mpc by DECIGO/BBO, if the central engine is powered by neutrinos.