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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.)

THE INFLUENCE OF QUANTUM VACUUM FRICTION ON PULSARS

Texto completo
Autor(es):
Coelho, Jaziel G. [1] ; Pereira, Jonas P. [2, 3] ; de Araujo, Jose C. N. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Inst Nacl Pesquisas Espaciais, Div Astrofis, Ave Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] Minist Educ Brazil, CAPES Fdn, Brasilia, DF - Brazil
[3] Towson Univ, Dept Phys Astron & Geosci, 8000 York Rd, Towson, MD 21252 - USA
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ASTROPHYSICAL JOURNAL; v. 823, n. 2 JUN 1 2016.
Citações Web of Science: 12
Resumo

We first revisit the energy loss mechanism known as quantum vacuum friction (QVF), clarifying some of its subtleties. Then we investigate the observables that could easily differentiate QVF from the classical magnetic dipole radiation for pulsars with accurately measured braking indices (n). We show that this is particularly the case for the time evolution of a pulsar's magnetic dipole direction ((phi) over dot) and surface magnetic field ((B) over dot(0)). As is well known in the context of the classic magnetic dipole radiation, n < 3 would only be possible for positive ((B) over dot(0)/B-0+(phi) over dot/tan phi ), which, for instance, leads to (B) over dot > 0 ((phi) over dot > 0) when phi (B-0) is constant. On the other hand, we show that QVF can result in very different predictions with respect to those above. Finally, even if (B) over dot(0) has the same sign in both of the aforementioned models for a pulsar, then, for a given f, we show that they give rise to different associated timescales, which could be another way to falsify QVF. (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