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dc.date.accessioned 2021-09-28T12:51:41Z
dc.date.available 2021-09-28T12:51:41Z
dc.date.issued 2017-01-24
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/125715
dc.description.abstract We analyse configurations of compact 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. en
dc.language en es
dc.subject modified gravity es
dc.subject Palatini formalism es
dc.subject neutron stars es
dc.subject equation of state es
dc.title Structure of compact stars in R-squared Palatini gravity en
dc.type Articulo es
sedici.identifier.other arXiv:1607.03508 es
sedici.identifier.other doi:10.1007/s10714-016-2182-7 es
sedici.identifier.issn 0001-7701 es
sedici.identifier.issn 1572-9532 es
sedici.creator.person Teppa Pannia, Florencia Anabella es
sedici.creator.person García, Federico es
sedici.creator.person Pérez Bergliaffa, Santiago Esteban es
sedici.creator.person Orellana, Mariana Dominga es
sedici.creator.person Romero, Gustavo Esteban es
sedici.subject.materias Astronomía es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Astronómicas y Geofísicas es
mods.originInfo.place Instituto Argentino de Radioastronomía es
sedici.subtype Preprint es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle General Relativity and Gravitation es
sedici.relation.journalVolumeAndIssue vol. 49, no. 2 es

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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)