RT Journal Article
T1 Modified gravity at astrophysical scales
A1 Cermeño, M.
A1 Carro, J.
A1 López Maroto, Antonio
A1 Pérez García, M. A.
AB Using a perturbative approach we solve stellar structure equations for low-density (solar-type) stars whose interior is described with a polytropic equation of state in scenarios involving a subset of modified gravity (MG) theories. Rather than focusing on particular theories, we consider a model-independent approach in which deviations from General Relativity are effectively described by a single parameter xi. We find that for length scales below those set by stellar General Relativistic radii the modifications introduced by MG can affect the computed values of masses and radii. As a consequence, the stellar luminosity is also affected. We discuss possible further implications for higher-density stars and observability of the effects previously described.
PB IOP Publishing Ltd
SN 0004-637X
YR 2019
FD 2019-02-20
LK https://hdl.handle.net/20.500.14352/13239
UL https://hdl.handle.net/20.500.14352/13239
LA eng
NO © 2019 IOP We thank M. Fairbairn for useful comments. This work has been supported by Junta de Castilla y Leon SA083P17, Spanish MINECO grant FIS2016-78859-P(AEI/FEDER, UE), and by PHAROS Cost action. We also thank the support of the Spanish Red Consolider MultiDark FPA2017-90566-REDC. M.C. is supported by a fellowship from the University of Salamanca.
NO Unión Europea. H2020
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
NO Junta de Castilla y León
NO Spanish Red Consolider MultiDark
NO University of Salamanca
DS Docta Complutense
RD 8 abr 2025