Trabajo Fin de Máster
Rotating Hyperonic Neutron Stars
Autor/es | Campoy Ordaz, Anna |
Director | Ramos Gómez, Àngels
Tolós Rigueiro, Laura |
Fecha de publicación | 2019-12 |
Fecha de depósito | 2020-02-12 |
Titulación | Universidad de Sevilla. Máster Universitario en Física Nuclear |
Resumen | Neutron stars are among the most compact objects known in the Universe, with central
densities several times that encountered in the center of atomic nuclei. The properties
of neutron stars, such as their masses and ... Neutron stars are among the most compact objects known in the Universe, with central densities several times that encountered in the center of atomic nuclei. The properties of neutron stars, such as their masses and radii, depend strongly on their internal com- position, and hence the equation of state, which is still an open question. Most neutron stars are observed as pulsars, which rotate with periods as low as the millisecond. It is therefore of fundamental importance to study how rotation affects its structure and this is the main purpose of this project. To this aim, the TOV equations with the Hartle- Thorne approach for rotating neutron stars are solved for different angular velocities of rotation employing two different hadronic models: A pure nucleonic equation of state for nuclear matter, widely used in the literature, and a recently developed hyperonic equation of state, the FSU2H model, which allows two-solar-mass neutron stars with hyperons in their cores. It is found that, due to its stiffer behaviour, the FSU2H equation of state leads to smaller Keplerian frequencies than the pure nucleonic model (H&H) and, hence, the FSU2H rotating neutron stars suffer bigger deformations and reach higher moments of inertia. Particularly, the less massive neutron stars are the systems that experience the larger effects due to rotation. |
Cita | Campoy Ordaz, A. (2019). Rotating Hyperonic Neutron Stars. (Trabajo Fin de Máster Inédito). Universidad de Sevilla, Sevilla. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CAMPOY ORDAZ, ANNA.pdf | 1.242Mb | [PDF] | Ver/ | |