An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs
- Autores
- Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; García Berro, E.; Romero, A. D.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A secular variation of the gravitational constant modifies the structure and evolutionary time scales of white dwarfs. Using an state-of-the-art stellar evolutionary code and an up-to-date pulsational code we compute the effects of a secularly varying G on the pulsational properties of variable white dwarfs. Comparing the the theoretical results obtained taking into account the effects of a running G with the observed periods and measured rates of change of the periods of two well studied pulsating white dwarfs, G117-B15A and R548, we place constraints on the rate of variation of Newton's constant. We derive an upper bound Ġ/G ~ −1.8 × 10−10 yr−1 using the variable white dwarf G117-B15A, and Ġ/G ~ −1.3 × 10−10 yr−1 using R548. Although these upper limits are currently less restrictive than those obtained using other techniques, they can be improved in a future measuring the rate of change of the period of massive white dwarfs. Export citation and abstract
Fil: Corsico, Alejandro Hugo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: García Berro, E.. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; Brasil - Materia
-
Gravity
White dwarfs
Brown dwarfs - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10620
Ver los metadatos del registro completo
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An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfsCorsico, Alejandro HugoAlthaus, Leandro GabrielGarcía Berro, E.Romero, A. D.GravityWhite dwarfsBrown dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A secular variation of the gravitational constant modifies the structure and evolutionary time scales of white dwarfs. Using an state-of-the-art stellar evolutionary code and an up-to-date pulsational code we compute the effects of a secularly varying G on the pulsational properties of variable white dwarfs. Comparing the the theoretical results obtained taking into account the effects of a running G with the observed periods and measured rates of change of the periods of two well studied pulsating white dwarfs, G117-B15A and R548, we place constraints on the rate of variation of Newton's constant. We derive an upper bound Ġ/G ~ −1.8 × 10−10 yr−1 using the variable white dwarf G117-B15A, and Ġ/G ~ −1.3 × 10−10 yr−1 using R548. Although these upper limits are currently less restrictive than those obtained using other techniques, they can be improved in a future measuring the rate of change of the period of massive white dwarfs. Export citation and abstractFil: Corsico, Alejandro Hugo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: García Berro, E.. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; EspañaFil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; BrasilIop Publishing2013-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10620Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; García Berro, E.; Romero, A. D.; An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 6; 6-2013; 32-441475-7516enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2013/06/032info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2013/06/032info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1306.1864info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:23Zoai:ri.conicet.gov.ar:11336/10620instacron: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:34982025-10-22 11:06:23.918CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| title |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| spellingShingle |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs Corsico, Alejandro Hugo Gravity White dwarfs Brown dwarfs |
| title_short |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| title_full |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| title_fullStr |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| title_full_unstemmed |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| title_sort |
An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs |
| dc.creator.none.fl_str_mv |
Corsico, Alejandro Hugo Althaus, Leandro Gabriel García Berro, E. Romero, A. D. |
| author |
Corsico, Alejandro Hugo |
| author_facet |
Corsico, Alejandro Hugo Althaus, Leandro Gabriel García Berro, E. Romero, A. D. |
| author_role |
author |
| author2 |
Althaus, Leandro Gabriel García Berro, E. Romero, A. D. |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Gravity White dwarfs Brown dwarfs |
| topic |
Gravity White dwarfs Brown dwarfs |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
A secular variation of the gravitational constant modifies the structure and evolutionary time scales of white dwarfs. Using an state-of-the-art stellar evolutionary code and an up-to-date pulsational code we compute the effects of a secularly varying G on the pulsational properties of variable white dwarfs. Comparing the the theoretical results obtained taking into account the effects of a running G with the observed periods and measured rates of change of the periods of two well studied pulsating white dwarfs, G117-B15A and R548, we place constraints on the rate of variation of Newton's constant. We derive an upper bound Ġ/G ~ −1.8 × 10−10 yr−1 using the variable white dwarf G117-B15A, and Ġ/G ~ −1.3 × 10−10 yr−1 using R548. Although these upper limits are currently less restrictive than those obtained using other techniques, they can be improved in a future measuring the rate of change of the period of massive white dwarfs. Export citation and abstract Fil: Corsico, Alejandro Hugo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina Fil: Althaus, Leandro Gabriel. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina Fil: García Berro, E.. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España Fil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; Brasil |
| description |
A secular variation of the gravitational constant modifies the structure and evolutionary time scales of white dwarfs. Using an state-of-the-art stellar evolutionary code and an up-to-date pulsational code we compute the effects of a secularly varying G on the pulsational properties of variable white dwarfs. Comparing the the theoretical results obtained taking into account the effects of a running G with the observed periods and measured rates of change of the periods of two well studied pulsating white dwarfs, G117-B15A and R548, we place constraints on the rate of variation of Newton's constant. We derive an upper bound Ġ/G ~ −1.8 × 10−10 yr−1 using the variable white dwarf G117-B15A, and Ġ/G ~ −1.3 × 10−10 yr−1 using R548. Although these upper limits are currently less restrictive than those obtained using other techniques, they can be improved in a future measuring the rate of change of the period of massive white dwarfs. Export citation and abstract |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013-06 |
| 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 |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/10620 Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; García Berro, E.; Romero, A. D.; An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 6; 6-2013; 32-44 1475-7516 |
| url |
http://hdl.handle.net/11336/10620 |
| identifier_str_mv |
Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; García Berro, E.; Romero, A. D.; An independent constraint on the secular rate of variation of the gravitational constant from pulsating white dwarfs; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 6; 6-2013; 32-44 1475-7516 |
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eng |
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eng |
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Iop Publishing |
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