Journal article
Gravitational radiation from magnetically funneled supernova fallback onto a magnetar
A Melatos, M Priymak
Astrophysical Journal | Published : 2014
Abstract
Protomagnetars spun up to millisecond rotation periods by supernova fallback are predicted to radiate gravitational waves via hydrodynamic instabilities for ∼102 s before possibly collapsing to form a black hole. It is shown that magnetic funneling of the accretion flow (1) creates a magnetically confined polar mountain, which boosts the gravitational wave signal, and (2) "buries" the magnetic dipole moment, delaying the propeller phase and assisting black hole formation.
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Funding Acknowledgements
A.M. thanks the Theoretical Astrophysics Group at the Eberhard Karls Universitat Tubingen for its generous hospitality while the paper was started. This work was supported by an Australian Research Council Discovery Project grant and a Group of Eight Germany Joint Research Cooperation grant.