Nota de FísicaPublicado
Mechanisms for the Emission or Accretion of Matter and Gravitational Waves in Robinson-Tautman Spacetimes
M. C. Lima; Maria Luiza Bedran; Ivano Damião Soares
2000
Dados da publicação
- Autores
- M. C. Lima; Maria Luiza Bedran; Ivano Damião Soares
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 2000
- Descrição
- We study the structure of Robinson-Trautman solutions of Einstein's equations for which the angular dependence of metric functions is non-analytic. We show that the non-analyticity produces new physical effects, in the sense that Einstein's equations demand the presence of an equatorial shell of matter that can modelled by neutrinos, strings and gravitational waves propagating radially on the shell. The presence of the shell allows us to characterize unambiguously the mass-energy loss or mass-energy accretion due to the emission or absorption of neutrinos, strings and gravitational waves. In the light of these models, we discuss the connection of the non-analiticity with processes that extract mass from the configuration, in the realm of Robinson-Trautman spacetimes. We also present a simple, though contrived model in which gravitational waves sent from the past null infinity collapse to form a Schwarzschild black-hole with infinitesimal mass.
- Ano
- 2000
- Número
- CBPF-NF-023/00
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não