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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3NNBM38
Repositóriosid.inpe.br/mtc-m21b/2017/04.17.18.28
Última Atualização2017:07.20.19.28.14 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2017/04.17.18.28.06
Última Atualização dos Metadados2021:07.28.23.02.13 (UTC) administrator
DOI10.1051/0004-6361/201629521
ISSN0004-6361
1432-0746
Chave de CitaçãoCoelhoCáLiMaRuRu:2017:RoNaSo
TítuloThe rotation-powered nature of some soft gamma-ray repeaters and anomalous X-ray pulsars
Ano2017
MêsMar.
Data de Acesso27 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho840 KiB
2. Contextualização
Autor1 Coelho, Jaziel Goulart
2 Cáceres, D. L.
3 Lima, R. C. R.
4 Malheiro, M.
5 Rueda, J. A.
6 Ruffini, R.
Grupo1 AST-CEA-SESPG-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Sapienza Università di Roma
3 ICRANet
4 Instituto Tecnológico de Aeronáutica (ITA)
5 Sapienza Università di Roma
6 Sapienza Università di Roma
Endereço de e-Mail do Autor1 jaziel.coelho@inpe.br
RevistaAstronomy & Astrophysics
Volume599
NúmeroA87
Nota SecundáriaA1_GEOCIÊNCIAS A1_ENGENHARIAS_III A2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA A2_INTERDISCIPLINAR A2_ENGENHARIAS_IV A2_ASTRONOMIA_/_FÍSICA B2_ENSINO C_ENGENHARIAS_II
Histórico (UTC)2017-04-17 18:28:06 :: simone -> administrator ::
2017-04-17 18:28:06 :: administrator -> simone :: 2017
2017-04-17 18:29:36 :: simone -> administrator :: 2017
2017-06-26 02:45:08 :: administrator -> simone :: 2017
2017-12-11 12:18:59 :: simone -> administrator :: 2017
2021-07-28 23:02:13 :: administrator -> simone :: 2017
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-Chavepulsars: general
stars: rotation
stars: neutron
stars: magnetic field
ResumoContext. Soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are slow rotating isolated pulsars whose energy reservoir is still matter of debate. Adopting neutron star (NS) fiducial parameters; mass M = 1 : 4 M-circle dot, radius R = 10 km, and moment of inertia, I = 1045 g cm(2), the rotational energy loss,. E-rot, is lower than the observed luminosity (dominated by the X-rays) L-X for many of the sources. Aims. We investigate the possibility that some members of this family could be canonical rotation-powered pulsars using realistic NS structure parameters instead of fiducial values. Methods. We compute the NS mass, radius, moment of inertia and angular momentum from numerical integration of the axisymmetric general relativistic equations of equilibrium. We then compute the entire range of allowed values of the rotational energy loss,. E-rot, for the observed values of rotation period P and spin-down rate. P. We also estimate the surface magnetic field using a general relativistic model of a rotating magnetic dipole. Results. We show that realistic NS parameters lowers the estimated value of the magnetic field and radiation efficiency, LX/Erot, with respect to estimates based on fiducial NS parameters. We show that nine SGRs/AXPs can be described as canonical pulsars driven by the NS rotational energy, for L-X computed in the soft (2-10 keV) X-ray band. We compute the range of NS masses for which LX/Erot < 1. We discuss the observed hard X-ray emission in three sources of the group of nine potentially rotation-powered NSs. This additional hard X-ray component dominates over the soft one leading to LX/Erot > 1 in two of them. Conclusions. We show that 9 SGRs/AXPs can be rotation-powered NSs if we analyze their X-ray luminosity in the soft 2-10 keV band. Interestingly, four of them show radio emission and six have been associated with supernova remnants (including Swift J1834.9-0846 the first SGR observed with a surrounding wind nebula). These observations give additional support to our results of a natural explanation of these sources in terms of ordinary pulsars. Including the hard X-ray emission observed in three sources of the group of potential rotation-powered NSs, this number of sources with L-X/E-rot < 1 becomes seven. It remains open to verification 1) the accuracy of the estimated distances and 2) the possible contribution of the associated supernova remnants to the hard X-ray emission.
ÁreaCEA
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4. Condições de acesso e uso
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URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34P/3NNBM38
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5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3F2NE4L
Lista de Itens Citando
DivulgaçãoWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
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