Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1997-10-10
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages, latex, no figures, to appear in the Proceedings of the Eigth Marcel Grossmann Meeting of Jerusalem (22-27 june, 1997)
Scientific paper
An example is described in which an asymptotically flat static vacuum Weyl space-time experiences a sudden change across a null hypersurface in the multipole moments of its isolated axially symmetric source. A light-like shell and an impulsive gravitational wave are identified, both having the null hypersurface as history. The stress-energy in the shell is dominated (at large distance from the source) by the jump in the monopole moment (the mass) of the source with the jump in the dipole moment mainly responsible for the stress being anisotropic. The gravitational wave owes its existence prrincipally to the jump in th quadrupole moment of the source confirming what would be expected. This serves as a model of a cataclysmic astrophysical event such as a supernova.
Barrabès Claude
Bressange Georges F.
Hogan P. A.
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