Spin-1 gravitational waves
arXiv:gr-qc/0212024 · doi:10.1142/S0217979204024148
Abstract
Gravitational fields invariant for a 2-dimensional Lie algebra of Killing fields [ X,Y] =Y, with Y of light type, are analyzed. The conditions for them to represent gravitational waves are verified and the definition of energy and polarization is addressed; realistic generating sources are described.
18 pages, no figures. A section on possible sources has been added. Version accepted for publication in Int. J. Mod. Phys. B