Evento
Structure of Neutron Stars in Palatini f(R) Gravity
García, Federico Miguel; Teppa Pannia, Florencia Anabella
; Perez Bergliaffa, Santiago Esteban; Orellana, Mariana Dominga
; Romero, Gustavo Esteban
Colaboradores:
Vila, Gabriela Soledad
; Vieyro, Florencia Laura
; Fabris, Júlio C.
Tipo del evento:
Reunión
Nombre del evento:
2nd Argentinian-Brazilian Meeting on Gravitation, Relativistic Astrophysics and Cosmology
Fecha del evento:
22/04/2014
Institución Organizadora:
Asociación Argentina de Astronomía;
Título del Libro:
Proceedings of the GRACo II Argentinian-Brazilian 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 inthe 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 of second 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:
ASTROPHYSICS
,
GRAVITY
,
PALATINI
Archivos asociados
Licencia
Identificadores
Colecciones
Eventos(IAR)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Structure of Neutron Stars in Palatini f(R) Gravity; 2nd Argentinian-Brazilian Meeting on Gravitation, Relativistic Astrophysics and Cosmology; Buenos Aires; Argentina; 2014; 207-210
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