Search for dissertations about: "spacetimes"
Showing result 1 - 5 of 18 swedish dissertations containing the word spacetimes.
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1. Multipole moments of axisymmetric spacetimes
Abstract : In this thesis we study multipole moments of axisymmetric spacetimes. Using the recursive definition of the multipole moments of Geroch and Hansen we develop a method for computing all multipole moments of a stationary axisymmetric spacetime without the use of a recursion. READ MORE
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2. Horizons and time machines : global structures in locally trivial spacetimes
Abstract : .... READ MORE
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3. Shapes of Spacetimes : Collected tales of black holes
Abstract : In theory, the existence of black holes is predicted by general relativity. In reality, there is a general consensus that they exist in space; in particular at the center of many galaxies. The theory of black holes has been around for decades, but there are still interesting questions calling for attention. READ MORE
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4. Multipole Moments of Stationary Spacetimes
Abstract : In this thesis we study the relativistic multipole moments for stationary asymptotically flat spacetimes as introduced by Geroch and Hansen. These multipole moments give an asymptotic description of the gravitational field in a coordinate independent way. READ MORE
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5. The Chevreton Superenergy Tensor in Einstein-Maxwell Spacetimes
Abstract : In this thesis we investigate the superenergy tensor that was introduced by Chevreton in 1964 as an electromagnetic counterpart to the Bel-Robinson tensor for the gravitational feld.We show that in Einstein-Maxwell spacetimes with a source-free electromagnetic feld, the Chevreton superenergy tensor has many interesting properties. READ MORE