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3 papers · 2 filters
Gravitational waves propagating into Friedmann--Robertson--Walker universes
Jiri Bicak, Jerry B. Griffiths
We consider space-times with two isometries which represent gravitational waves with distinct wavefronts which propagate into exact Friedmann-Robertson-Walker (FRW) universes. The…
Asymptotic Structure of Symmetry Reduced General Relativity
Abhay Ashtekar, Jiri Bicak, Bernd G. Schmidt
Gravitational waves with a space-translation Killing field are considered. In this case, the 4-dimensional Einstein vacuum equations are equivalent to the 3-dimensional Einstein eq…
Behavior of Einstein-Rosen Waves at Null Infinity
Abhay Ashtekar, Jiri Bicak, Bernd G. Schmidt
The asymptotic behavior of Einstein-Rosen waves at null infinity in 4 dimensions is investigated in {\it all} directions by exploiting the relation between the 4-dimensional space-…