Using spacetime surgeries to model bouncing null fluids and null fluid radiation

Creelman, Bradley (2017) Using spacetime surgeries to model bouncing null fluids and null fluid radiation. Masters thesis, Memorial University of Newfoundland.

[English] PDF - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (399kB)

Abstract

In 1991 Ori proposed a construction to remedy energy condition violations in the ingoing Vaidya-Reissner-Nordström (VRN) spacetime. The model replaces the violation regions of VRN with an outgoing VRN spacetime. The two spacetimes are attached along a spacelike hypersurface and the hybrid spacetime models the ingoing matter bouncing at this surface. Such a spacetime surgery was claimed to produce no thin shell at the junction surface. In 2015 Booth showed that in the special case of extremal Reissner-Nordström a thin shell will exist under the same construction. In this work the Ori construction is generalized to Husain null uids, a one parameter generalization of the VRN solution. Along the way, the tension between the extremal case and the VRN case will be resolved: there are several ways to match coordinates along the junction surface and the two cases chose different matchings. Further, the case of a timelike junction surface will be analyzed as a classical model of null radiation from a black hole.

Actions (login required)

View Item