Gravitational radiation from collapsing magnetized dust. II. Polar parity perturbation
- Theoretical Astrophysics, University of Tuebingen, Auf der Morgenstelle 10, Tuebingen 72076 (Germany)
Using gauge-invariant perturbation theory, we study the effects of stellar magnetic fields on polar gravitational waves emitted during the collapse of homogeneous dust. We found that the emitted energy in gravitational waves depends strongly on the initial stellar radius as well as on the ratio between the poloidal and toroidal magnetic components. The polar gravitational-wave output of such a collapse can easily be up to a few orders of magnitude larger than what we get from the nonmagnetized collapse. The changes due to the existence of a magnetic field could be helpful in extracting some information about inner magnetic profiles of progenitors from the detection of the gravitational waves radiated during black hole formation, which results from the stellar collapse.
- OSTI ID:
- 21308331
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 79, Issue 8; Other Information: DOI: 10.1103/PhysRevD.79.084037; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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