Gravitational wave frequencies and energies in hypernovae

Abstract

A torus develops a state of suspended accretion against a magnetic wall around a rapidly rotating black hole formed in core-collapse hypernovae. It hereby emits about 10% of the black hole spin-energy in gravitational radiation from a finite number of multipole mass moments. We quantify the relation between the frequency of quadrupole gravitational radiation and the energy output $E_w$ in torus winds by $f_{gw}\simeq 470Hz(E_w/4\times 10^{52}erg{)}^{1/2}(7M_{\odot }/M{)}^{3/2}$, where $M$ denotes the mass of the black hole. We propose that $E_w$ irradiates the remnant stellar envelope from within. We identify $E_w$ with energies $\sim 10^{52}$ erg inferred from X-ray observations on matter injecta; and the poloidal curvature in the magnetic wall with the horizon opening angle in baryon poor outflows that power true GRB energies of $E_{\gamma }\simeq 3\times 10^{51}$ erg.

To appear in APJ

References in corpus (1)

• LIGO/VIRGO searches for gravitational radiation in hypernovae

Cited by in corpus (7)

• Gamma-Ray Bursts
• Gamma-Ray Bursts: Progress, Problems & Prospects
• A Search for Gravitational Waves Associated with the Gamma Ray Burst GRB030329 Using the LIGO Detectors
• Theory and astrophysical consequences of a magnetized torus around a rapidly rotating black hole
• Gravitational radiation from gamma-ray bursts as observational opportunities for LIGO and VIRGO
• Prospects for multi-messenger extended emission from core-collapse supernovae in the Local Universe
• Prospects for true calorimetry on Kerr black holes in core-collapse supernovae and mergers