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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Gravitational waves from pulsars in the context of magnetic ellipticity

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Autor(es):
de Araujo, Jose C. N. ; Coelho, Jaziel G. ; Costa, Cesar A.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 77, n. 5 MAY 26 2017.
Citações Web of Science: 1
Resumo

In one of our previous articles we have considered the role of a time dependent magnetic ellipticity on the pulsars' braking indices and on the putative gravitational waves these objects can emit. Since only nine of more than 2000 known pulsars have accurately measured braking indices, it is of interest to extend this study to all known pulsars, in particular as regards gravitational wave generation. To do so, as shown in our previous article, we need to know some pulsars' observable quantities such as: periods and their time derivatives, and estimated distances to the Earth. Moreover, we also need to know the pulsars' masses and radii, for which we are adopting current fiducial values. Our results show that the gravitational wave amplitude is at best h similar to 10(-28). This leads to a pessimistic prospect for the detection of gravitational waves generated by these pulsars, even for Advanced LIGO and Advanced Virgo, and the planned Einstein Telescope, if the ellipticity has a magnetic origin. (AU)

Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
Beneficiário:Manuel Máximo Bastos Malheiro de Oliveira
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/15088-0 - Magnetares e os pulsares de anãs brancas magnetizadas, muito rápidas, massivas e estranhas e a geração de ondas gravitacionais
Beneficiário:Jaziel Goulart Coelho
Linha de fomento: Bolsas no Brasil - Pós-Doutorado