Evento
Structure of Compact Stars in Palatini f (R) Gravity
García, Federico
; Teppa Pannia, Florencia Anabella
; Perez Bergliaffa, Santiago E.; Orellana, Mariana Dominga
; Romero, Gustavo Esteban
Colaboradores:
Vila, Gabriela Soledad
; Vieyro, Florencia Laura
; Fabris, J.
Tipo del evento:
Congreso
Nombre del evento:
GRACO II: 2nd Gravitation, Astrophysics and Cosmology Argentine-Brazilean Meeting
Fecha del evento:
22/04/2014
Institución Organizadora:
Instituto Argentino de Radioastronomía;
Título del Libro:
GRACO II: 2nd Gravitation, Astrophysics and Cosmology Argentine-Brazilean Meeting
Editorial:
Asociación Argentina de Astronomía
ISBN:
978-987-24948-2-7
Idioma:
Inglés
Clasificación temática:
Resumen
The study of the structure of compact objects in modified theories of gravity can be useful to constrain f (R)-theories in the strong gravitational regime. In particular, the structure of compact stars in the theory with Langrangian density f (R) = R + αR2 have been recently explored using the metric formalism.In this work we analyze configurations of neutron stars in squared-gravity using the Palatini formalism, in which the field equations are ofsecond order, and the modified Tolman-Oppenheimer-Volkoff equations for a spherically-symmetric and static metric can be derived without approximation, as in General Relativity.The numerical integration of the structure equations allows us to study the mass-radius configurations and the characteristics of internal profiles.We compare our results with those obtained using General Relativity.
Palabras clave:
GRAVITY
,
NEUTRON STARS
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Eventos(IAR)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Structure of Compact Stars in Palatini f (R) Gravity; GRACO II: 2nd Gravitation, Astrophysics and Cosmology Argentine-Brazilean Meeting; Buenos Aires; Argentina; 2014; 207-210
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