| Texto completo | |
| Autor(es): |
Basso, Marcos L. W.
;
Zanchin, Vilson T.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 110, n. 12, p. 25-pg., 2024-12-17. |
| Resumo | |
New models of electrically charged objects as solutions of the Einstein-Maxwell field equations are obtained and studied in the present work. Static and rotating models are built. In both cases, the full spacetime geometries are obtained by matching two spacetime regions, an interior region containing electrified matter and an exterior electrovacuum region. In the static case, the interior region contains a spherically symmetric distribution of matter constituted by a de Sitter-type perfect fluid with electric charge, whose energy density profile is given by a Tolman-like relation. The interior solution is smoothly matched with the exterior Reissner-Nordstr & ouml;m electrovacuum solution, thus producing different kinds of objects, such as charged regular black holes and overcharged tension stars, that we analyze in some detail. We also investigate the connection between the present static solution and the regular black holes with a de Sitter core presented in the work by Lemos and Zanchin [Regular black holes: Electrically charged solutions, Reissner-Nordstr & ouml;m outside a de Sitter core, Phys. Rev. D 83, 124005 (2011)]. We then employ the G & uuml;rses-G & uuml;rsey metric and apply the Newman-Janis algorithm to construct a charged rotating interior geometry from the static interior solution. The resulting interior metric and the electromagnetic field are smoothly matched to the exterior Kerr-Newman electrovacuum solution, thus producing a regular interior for the exterior Kerr-Newman geometry. The transition from the interior region to the exterior region of the spacetime is smooth in the sense that no boundary shell is present. The main properties of the complete rotating solutions are analyzed in detail, showing that different kinds of rotating objects, such as charged rotating black holes and other charged rotating objects, also emerge in the rotating case. (AU) | |
| Processo FAPESP: | 22/09496-8 - Explorando os efeitos extremos da rotação e do campo eletromagnético na relatividade geral: novas soluções exatas e aproximações numéricas |
| Beneficiário: | Marcos Leopoldo Wayhs Basso |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |