- We report on E = 3%MSolar c2 in Extended Emission to GW170817 (van Putten & Della Valle, 2019, MNRAS, 482, L46) by signal injection experiments. Quantitative agreement is found with radiation from a non-axisymmetric torus around a rotating black hole formed in delayed core-collapse of a hyper-massive neutron star (HNS) created in the immediate aftermath of the double neutron star merger GW170817. This agreement is based on numerical integration of the equations of suspended accretion for a thick torus with a major radius of about three times the radius of the Inner Most Stable Circular Orbit (ISCO) of the initially non-extremal stellar mass black hole. The observed energies in Multi-Messenger Extended Emission - in GWs, a kilonova and GRB170817A - satisfy the scaling relations of van Putten & Levinson, 2003, ApJ, 584, 937. GW170817EE hereby provides calorimetric evidence for Kerr black holes as objects in Nature proposed in van Putten & Levinson, 2002, Science, 295, 1874.
- JGW-T1302019: KAGALI C-coding style guide
- JGW-M1100482: PAB presentation
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