Numerical simulations of hyperbolic encounters of black holes

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2022, Tutor: Tomas Andrade Weber The objective of this project is to study simulations of hyperbolic encounters of black holes (BHs) using a 1.5 Post-Newtonian approximation and assess its validity by comparing the data calculated on the movement and on gravitational wave (GW) radiation with the results provided by numerical relativity simulations. The PN approximations are known to not always converge, but they are suitable in some regions of parameters space. For the region of parameters explored, we find that the best results are obtained if the expansion of the GW radiation is truncated at the leading order