Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2011-05-17
Gen.Rel.Grav.43:2729-2742,2011
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
12 pages, to appear in General Relativity and Gravitation
Scientific paper
10.1007/s10714-011-1197-3
We study the Bondi-Sachs rockets with nonzero cosmological constant. We observe that the acceleration of the systems arises naturally in the asymptotic symmetries of (anti-) de Sitter spacetimes. Assuming the validity of the concepts of energy and mass previously introduced in asymptotically flat spacetimes, we find that the emission of pure radiation energy balances the loss of the Bondi mass in certain special families of the Bondi-Sachs rockets, so in these there is no gravitational radiation.
Ge Huabin
Luo Ming-xing
Su Qiping
Wang Ding
Zhang Xiao
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