Gravitational waves and Robinson-Trautman spacetimes

Paulo Sergio Piva

Full text
Author(s):	Paulo Sergio Piva Total Authors: 1
Document type:	Master's Dissertation
Press:	Campinas, SP.
Institution:	Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin
Defense date:	2021-03-31
Examining board members:	Alberto Vazquez Saa; Ricardo Antonio Mosna; George Emanuel Avraam Matsas
Advisor:	Alberto Vazquez Saa
Abstract
In this work we study the consequences of gravitational wave emission from a compact source without rotation with aid of Robinson-Trautman spacetimes. First, we understand how to use Bondi momentum and the BMS group in order to extract and control physical properties of the source. After determining the explicit expressions of energy and velocity for Robinson-Trautman metric, we focus on understanding time evolution and determination of proper initial data to be analyzed. Then, we discover how to deal with the post merger phase of a frontal collision of two black holes in different Bondi reference frames, which inspired us to propose a new initial condition that represents the head-on collision of any number of black holes. At the end, we use the algorithms developed with a Galerkin method to solve time evolution, making possible to explore efficiency and kick velocity for some of the systems proposed during the text. A qualitative relation between physical properties of the source and the Bondi mass aspect asymmetries is also explored (AU)

FAPESP's process:	18/23857-8 - Gravitational waves and the Robinson-Trautman spacetime
Grantee:	Paulo Sergio Piva
Support Opportunities:	Scholarships in Brazil - Master

Short URL