Structure of compact stars in R-squared Palatini gravity

Fil: Teppa Pannia, Florencia A. Comisión de Investigaciones Científicas; Argentina

Detalles Bibliográficos
Autores principales:	Teppa Pannia, Florencia A., García, Federico, Perez Bergliaffa, Santiago E., Orellana, Mariana Dominga, Romero, Gustavo E.
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ciencias Físicas Modified Gravity Palatini Formalism Neutron Stars Equation of State
Acceso en línea:	http://link.springer.com/article/10.1007/s10714-016-2182-7 http://dx.doi.org/10.1007/s10714-016-2182-7 http://hdl.handle.net/11336/63359 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2830
Aporte de:	Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN) de Universidad Nacional de Río Negro

id	I65-R171-20.500.12049-2830
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spelling	I65-R171-20.500.12049-28302023-09-13T15:35:32Z application/pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ 2016-12-22 Fil: Teppa Pannia, Florencia A. Comisión de Investigaciones Científicas; Argentina Fil: Teppa Pannia, Florencia A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Teppa Pannia, Florencia A. Instituto Argentino de Radioastronomía; Argentina Fil: García, Federico. Comisión de Investigaciones Científicas; Argentina Fil: García, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: García, Federico. Instituto Argentino de Radioastronomía; Argentina Fil: Perez Bergliaffa, Santiago E. Universidade Do Estado Do Rio de Janeiro; Brasil Fil: Orellana, Mariana D. Universidad Nacional de Rio Negro. Sede Andina; Argentina Fil: Romero, Gustavo E. Comisión de Investigaciones Científicas; Argentina Fil: Romero, Gustavo E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Romero, Gustavo E. Instituto Argentino de Radioastronomia; Argentina Structure of compact stars in R-squared Palatini gravity Teppa Pannia, Florencia A. García, Federico Perez Bergliaffa, Santiago E. Orellana, Mariana Dominga Romero, Gustavo E. Ciencias Físicas Modified Gravity Palatini Formalism Neutron Stars Equation of State Ciencias Físicas true We analyse configurations of neutron stars in the so-called R-squared gravity in the Palatini formalism. Using a realistic equation of state we show that the mass-radius configurations are lighter than their counterparts in General Relativity. We also obtain the internal profiles, which run in strong correlation with the derivatives of the equation of state, leading to regions where the mass parameter decreases with the radial coordinate in a counter-intuitive way. In order to analyse such correlation, we introduce a parametrisation of the equation of state given by multiple polytropes, which allows us to explicitly control its derivatives. We show that, even in a limiting case where hard phase transitions in matter are allowed, the internal profile of the mass parameter still presents strange features and the calculated M −R configurations also yield neutron stars lighter than those obtained in General Relativity. Teppa Pannia, Florencia A., García, Federico., Perez Bergliaffa, Santiago E., Orellana, Mariana D. & Romero, Gustavo E. (2016). Structure of compact stars in R-squared Palatini gravity. Springer/Plenum Publishers; General Relativity And Gravitation; 49; 2; 1-14 0001-7701 http://link.springer.com/article/10.1007/s10714-016-2182-7 http://dx.doi.org/10.1007/s10714-016-2182-7 http://hdl.handle.net/11336/63359 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2830 eng General Relativity And Gravitation
institution	Universidad Nacional de Río Negro
institution_str	I-65
repository_str	R-171
collection	Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN)
language	Inglés
orig_language_str_mv	eng
topic	Ciencias Físicas Modified Gravity Palatini Formalism Neutron Stars Equation of State Ciencias Físicas
spellingShingle	Ciencias Físicas Modified Gravity Palatini Formalism Neutron Stars Equation of State Ciencias Físicas Teppa Pannia, Florencia A. García, Federico Perez Bergliaffa, Santiago E. Orellana, Mariana Dominga Romero, Gustavo E. Structure of compact stars in R-squared Palatini gravity
topic_facet	Ciencias Físicas Modified Gravity Palatini Formalism Neutron Stars Equation of State Ciencias Físicas
description	Fil: Teppa Pannia, Florencia A. Comisión de Investigaciones Científicas; Argentina
author	Teppa Pannia, Florencia A. García, Federico Perez Bergliaffa, Santiago E. Orellana, Mariana Dominga Romero, Gustavo E.
author_facet	Teppa Pannia, Florencia A. García, Federico Perez Bergliaffa, Santiago E. Orellana, Mariana Dominga Romero, Gustavo E.
author_sort	Teppa Pannia, Florencia A.
title	Structure of compact stars in R-squared Palatini gravity
title_short	Structure of compact stars in R-squared Palatini gravity
title_full	Structure of compact stars in R-squared Palatini gravity
title_fullStr	Structure of compact stars in R-squared Palatini gravity
title_full_unstemmed	Structure of compact stars in R-squared Palatini gravity
title_sort	structure of compact stars in r-squared palatini gravity
publishDate	2016
url	http://link.springer.com/article/10.1007/s10714-016-2182-7 http://dx.doi.org/10.1007/s10714-016-2182-7 http://hdl.handle.net/11336/63359 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2830
work_keys_str_mv	AT teppapanniaflorenciaa structureofcompactstarsinrsquaredpalatinigravity AT garciafederico structureofcompactstarsinrsquaredpalatinigravity AT perezbergliaffasantiagoe structureofcompactstarsinrsquaredpalatinigravity AT orellanamarianadominga structureofcompactstarsinrsquaredpalatinigravity AT romerogustavoe structureofcompactstarsinrsquaredpalatinigravity
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Structure of compact stars in R-squared Palatini gravity

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