Open AccessApproximate Kerr-Newman-like metric with quadrupole
Author(s) -
Francisco Frutos─Alfaro,
Pedro Gómez-Ovares,
Paulo Montero-Camacho
Publication year - 2021
Publication title -
revista de matemáticas
Language(s) - English
Resource type - Journals
eISSN - 2215-3373
pISSN - 1409-2433
DOI - 10.15517/rmta.v28i2.37152
Subject(s) - metric (unit) , quadrupole , kerr metric , physics , spacetime , theoretical physics , simple (philosophy) , classical mechanics , quantum mechanics , philosophy , operations management , schwarzschild radius , epistemology , economics
The Kerr metric is known to have issues when trying to find a physical interior solution. In this work we continue our efforts to construct a more realistic exterior metric for astrophysical objects. A new approximate metric representing the spacetime of a charged, rotating and slightly-deformed body is obtained by perturbing the Kerr-Newman metric to include the mass-quadrupole and quadrupole-quadrupole orders. It has a simple form because it is Kerr-Newman-like.