Color superconductivity in compact stellar hybrid configurations
The discovery of pulsars PSR J1614-2230 and PSR J0348+0432 with masses of around 2M<sub>ʘ</sub> imposes strong constraints on the equations of state of cold, ultradense matter. If a phase transition from hadronic matter to quark matter were to occur in the inner cores of such massive neu...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87239 |
| Aporte de: |
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I19-R120-10915-87239 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Nuclear matter in neutron stars Asymmetric nuclear matter Equations of state of nuclear matter Nuclear astrophysics Neutron stars |
| spellingShingle |
Ciencias Astronómicas Nuclear matter in neutron stars Asymmetric nuclear matter Equations of state of nuclear matter Nuclear astrophysics Neutron stars Ranea Sandoval, Ignacio Francisco Orsaria, Milva Gabriela Han, Sophia Weber, Fridolin Spinella, William M. Color superconductivity in compact stellar hybrid configurations |
| topic_facet |
Ciencias Astronómicas Nuclear matter in neutron stars Asymmetric nuclear matter Equations of state of nuclear matter Nuclear astrophysics Neutron stars |
| description |
The discovery of pulsars PSR J1614-2230 and PSR J0348+0432 with masses of around 2M<sub>ʘ</sub> imposes strong constraints on the equations of state of cold, ultradense matter. If a phase transition from hadronic matter to quark matter were to occur in the inner cores of such massive neutron stars, the energetically favorable state of quark matter would be a color superconductor. In this study, we analyze the stability and maximum mass of such neutron stars. The hadronic phase is described by nonlinear relativistic mean-field models, and the local Nambu-Jona Lasinio model is used to describe quark matter in the 2SC+s quark phase. The phase transition is treated as a Maxwell transition, assuming a sharp hadron-quark interface, and the "constant-sound-speed" (CSS) parametrization is employed to discuss the existence of stellar twin configurations. We find that massive neutron stars such as J1614-2230 and J0348+0432 can only exist on the connected stellar branch but not on the disconnected twin-star branch. The latter can only support stars with masses that are strictly below 2M<sub>ʘ</sub>. |
| format |
Articulo Articulo |
| author |
Ranea Sandoval, Ignacio Francisco Orsaria, Milva Gabriela Han, Sophia Weber, Fridolin Spinella, William M. |
| author_facet |
Ranea Sandoval, Ignacio Francisco Orsaria, Milva Gabriela Han, Sophia Weber, Fridolin Spinella, William M. |
| author_sort |
Ranea Sandoval, Ignacio Francisco |
| title |
Color superconductivity in compact stellar hybrid configurations |
| title_short |
Color superconductivity in compact stellar hybrid configurations |
| title_full |
Color superconductivity in compact stellar hybrid configurations |
| title_fullStr |
Color superconductivity in compact stellar hybrid configurations |
| title_full_unstemmed |
Color superconductivity in compact stellar hybrid configurations |
| title_sort |
color superconductivity in compact stellar hybrid configurations |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/87239 |
| work_keys_str_mv |
AT raneasandovalignaciofrancisco colorsuperconductivityincompactstellarhybridconfigurations AT orsariamilvagabriela colorsuperconductivityincompactstellarhybridconfigurations AT hansophia colorsuperconductivityincompactstellarhybridconfigurations AT weberfridolin colorsuperconductivityincompactstellarhybridconfigurations AT spinellawilliamm colorsuperconductivityincompactstellarhybridconfigurations |
| bdutipo_str |
Repositorios |
| _version_ |
1764820489780330496 |