Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr

Autores
Lima, I. J.; Tovmassian, G.; Rodrigues, C. V.; Oliveira, A. S.; Luna, Gerardo Juan Manuel; Buckley, D. A. H.; Silva, K. M. G.; Mattiuci, A. C.; Souza, D. C.; Schlindwein, W.; Falkenberg, F.; Palhares, M. S.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report on the discovery of circular polarization modulated with a period of 1.943 ± 0.002 hr in the cataclysmic variable V1082 Sgr. These findings unambiguously reveal the rotation of a magnetic white dwarf and establish its intermediate polar nature. Along with its extraordinary long orbital period (Porb) of 20.8 hr, the spin period (Pspin) places this system in an extreme position of the Pspin versus Porb distribution. The circular polarization phase diagram has a single peak and an amplitude smaller than 1%. These data were used to model the postshock region of the accretion flow on the white dwarf surface using the CYCLOPS code. We obtained a magnetic field in the white dwarf pole of 11 MG and a magnetospheric radius consistent with the coupling region at around 2–3 white dwarf radii. The Pspin/Porb value and the estimated magnetic field momentum suggest that V1082 Sgr could be out of spin equilibrium or in a spin-up state, possibly in a stream accretion mode.
Fil: Lima, I. J.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
Fil: Rodrigues, C. V.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Oliveira, A. S.. Universidade Estadual da Paraiba; Brasil
Fil: Luna, Gerardo Juan Manuel. Secretaria de Investigacion ; Universidad Nacional de Hurlingham; . Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Buckley, D. A. H.. University of Cape Town; Sudáfrica
Fil: Silva, K. M. G.. Gemini Observatory; Estados Unidos
Fil: Mattiuci, A. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Souza, D. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Schlindwein, W.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Falkenberg, F.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Palhares, M. S.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Materia
Close binary stars
Cataclysmic variable star
Starlight polarization
White dwarf stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/265574
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/265574
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 SgrLima, I. J.Tovmassian, G.Rodrigues, C. V.Oliveira, A. S.Luna, Gerardo Juan ManuelBuckley, D. A. H.Silva, K. M. G.Mattiuci, A. C.Souza, D. C.Schlindwein, W.Falkenberg, F.Palhares, M. S.Close binary starsCataclysmic variable starStarlight polarizationWhite dwarf starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report on the discovery of circular polarization modulated with a period of 1.943 ± 0.002 hr in the cataclysmic variable V1082 Sgr. These findings unambiguously reveal the rotation of a magnetic white dwarf and establish its intermediate polar nature. Along with its extraordinary long orbital period (Porb) of 20.8 hr, the spin period (Pspin) places this system in an extreme position of the Pspin versus Porb distribution. The circular polarization phase diagram has a single peak and an amplitude smaller than 1%. These data were used to model the postshock region of the accretion flow on the white dwarf surface using the CYCLOPS code. We obtained a magnetic field in the white dwarf pole of 11 MG and a magnetospheric radius consistent with the coupling region at around 2–3 white dwarf radii. The Pspin/Porb value and the estimated magnetic field momentum suggest that V1082 Sgr could be out of spin equilibrium or in a spin-up state, possibly in a stream accretion mode.Fil: Lima, I. J.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Tovmassian, G.. Universidad Nacional Autónoma de México; MéxicoFil: Rodrigues, C. V.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Oliveira, A. S.. Universidade Estadual da Paraiba; BrasilFil: Luna, Gerardo Juan Manuel. Secretaria de Investigacion ; Universidad Nacional de Hurlingham; . Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Buckley, D. A. H.. University of Cape Town; SudáfricaFil: Silva, K. M. G.. Gemini Observatory; Estados UnidosFil: Mattiuci, A. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Souza, D. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Schlindwein, W.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Falkenberg, F.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Palhares, M. S.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilIOP Publishing2025-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/265574Lima, I. J.; Tovmassian, G.; Rodrigues, C. V.; Oliveira, A. S.; Luna, Gerardo Juan Manuel; et al.; Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 984; 2; 5-2025; 1-90004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/adc380info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/adc380info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:55:17Zoai:ri.conicet.gov.ar:11336/265574instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:55:17.725CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
title Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
spellingShingle Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
Lima, I. J.
Close binary stars
Cataclysmic variable star
Starlight polarization
White dwarf stars
title_short Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
title_full Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
title_fullStr Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
title_full_unstemmed Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
title_sort Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr
dc.creator.none.fl_str_mv Lima, I. J.
Tovmassian, G.
Rodrigues, C. V.
Oliveira, A. S.
Luna, Gerardo Juan Manuel
Buckley, D. A. H.
Silva, K. M. G.
Mattiuci, A. C.
Souza, D. C.
Schlindwein, W.
Falkenberg, F.
Palhares, M. S.
author Lima, I. J.
author_facet Lima, I. J.
Tovmassian, G.
Rodrigues, C. V.
Oliveira, A. S.
Luna, Gerardo Juan Manuel
Buckley, D. A. H.
Silva, K. M. G.
Mattiuci, A. C.
Souza, D. C.
Schlindwein, W.
Falkenberg, F.
Palhares, M. S.
author_role author
author2 Tovmassian, G.
Rodrigues, C. V.
Oliveira, A. S.
Luna, Gerardo Juan Manuel
Buckley, D. A. H.
Silva, K. M. G.
Mattiuci, A. C.
Souza, D. C.
Schlindwein, W.
Falkenberg, F.
Palhares, M. S.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Close binary stars
Cataclysmic variable star
Starlight polarization
White dwarf stars
topic Close binary stars
Cataclysmic variable star
Starlight polarization
White dwarf stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report on the discovery of circular polarization modulated with a period of 1.943 ± 0.002 hr in the cataclysmic variable V1082 Sgr. These findings unambiguously reveal the rotation of a magnetic white dwarf and establish its intermediate polar nature. Along with its extraordinary long orbital period (Porb) of 20.8 hr, the spin period (Pspin) places this system in an extreme position of the Pspin versus Porb distribution. The circular polarization phase diagram has a single peak and an amplitude smaller than 1%. These data were used to model the postshock region of the accretion flow on the white dwarf surface using the CYCLOPS code. We obtained a magnetic field in the white dwarf pole of 11 MG and a magnetospheric radius consistent with the coupling region at around 2–3 white dwarf radii. The Pspin/Porb value and the estimated magnetic field momentum suggest that V1082 Sgr could be out of spin equilibrium or in a spin-up state, possibly in a stream accretion mode.
Fil: Lima, I. J.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
Fil: Rodrigues, C. V.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Oliveira, A. S.. Universidade Estadual da Paraiba; Brasil
Fil: Luna, Gerardo Juan Manuel. Secretaria de Investigacion ; Universidad Nacional de Hurlingham; . Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Buckley, D. A. H.. University of Cape Town; Sudáfrica
Fil: Silva, K. M. G.. Gemini Observatory; Estados Unidos
Fil: Mattiuci, A. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Souza, D. C.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Schlindwein, W.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Falkenberg, F.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
Fil: Palhares, M. S.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; Brasil
description We report on the discovery of circular polarization modulated with a period of 1.943 ± 0.002 hr in the cataclysmic variable V1082 Sgr. These findings unambiguously reveal the rotation of a magnetic white dwarf and establish its intermediate polar nature. Along with its extraordinary long orbital period (Porb) of 20.8 hr, the spin period (Pspin) places this system in an extreme position of the Pspin versus Porb distribution. The circular polarization phase diagram has a single peak and an amplitude smaller than 1%. These data were used to model the postshock region of the accretion flow on the white dwarf surface using the CYCLOPS code. We obtained a magnetic field in the white dwarf pole of 11 MG and a magnetospheric radius consistent with the coupling region at around 2–3 white dwarf radii. The Pspin/Porb value and the estimated magnetic field momentum suggest that V1082 Sgr could be out of spin equilibrium or in a spin-up state, possibly in a stream accretion mode.
publishDate 2025
dc.date.none.fl_str_mv 2025-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/265574
Lima, I. J.; Tovmassian, G.; Rodrigues, C. V.; Oliveira, A. S.; Luna, Gerardo Juan Manuel; et al.; Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 984; 2; 5-2025; 1-9
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/265574
identifier_str_mv Lima, I. J.; Tovmassian, G.; Rodrigues, C. V.; Oliveira, A. S.; Luna, Gerardo Juan Manuel; et al.; Detection of the White Dwarf Spin of the Long-orbital Period Magnetic Cataclysmic Variable V1082 Sgr; IOP Publishing; Astrophysical Journal; 984; 2; 5-2025; 1-9
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/adc380
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/adc380
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269335988469760
score 12.885934

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