| Texto completo | |
| Autor(es): |
de Sa, Lucas M.
;
Bernardo, Antonio
;
Bachega, Riis R. A.
;
Rocha, Livia S.
;
Horvath, Jorge E.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTRONOMISCHE NACHRICHTEN; v. N/A, p. 4-pg., 2022-12-16. |
| Resumo | |
Binary population synthesis provides a direct way of studying the effects of different choices of binary evolution models and initial parameter distributions on present-day compact binary merger populations, which can then be compared to empirical properties such as observed merger rates. Samples of zero-age main sequence binaries to be evolved by such codes are typically generated from a universal initial mass function (IMF) and simple, uniform, distributions for orbital period P, mass ratio q, and eccentricity e. More recently, however, mounting observational evidence has suggested the non-universality of the IMF and the existence of correlations between binary parameters. In this study, we implement a metallicity- and redshift-dependent IMF alongside correlated distributions for P, q, and e to generate representative populations of binaries at varying redshifts, which are then evolved with the COMPAS code in order to study the variations in merger rates and overall population properties. (AU) | |
| Processo FAPESP: | 20/08518-2 - Estrelas de nêutrons: estrutura, evolução e ondas gravitacionais |
| Beneficiário: | Jorge Ernesto Horvath |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 13/26258-4 - Matéria superdensa no universo |
| Beneficiário: | Manuel Máximo Bastos Malheiro de Oliveira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |