Nucleosynthesis in Strange Star Mergers

The possible existence of deconfined matter in the cores of neutron stars has been studied for over three decades without a firm indication either for or against this proposition. Analysis mostly rely on the comparison of mass-radius curves obtained for different compositions with observational data...

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Autores principales: Paulucci, Laura, Horvath, Jorge Ernesto, Benvenuto, Omar Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Astronómicas
Strange Stars
Kilonova
Mergers
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124031
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124031
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
Strange Stars
Kilonova
Mergers
spellingShingle Ciencias Astronómicas
Strange Stars
Kilonova
Mergers
Paulucci, Laura
Horvath, Jorge Ernesto
Benvenuto, Omar Gustavo
Nucleosynthesis in Strange Star Mergers
topic_facet Ciencias Astronómicas
Strange Stars
Kilonova
Mergers
description The possible existence of deconfined matter in the cores of neutron stars has been studied for over three decades without a firm indication either for or against this proposition. Analysis mostly rely on the comparison of mass-radius curves obtained for different compositions with observational data on the mass of the most massive objects of this kind accurately determined. Nevertheless, there are other possibilities for indirectly studying the internal composition of this class of compact objects, e.g, analyzing cooling behavior, X-ray bursts, supernova’s neutrinos. We present calculations on the expected nucleosynthesis spectra for the strange star-strange star merger scenario as means to test the strange quark matter hypothesis and its realization inside such objects. This would result very different from the typical r-process nucleosynthesis expected in neutron star mergers since the high temperature deconfinement of strange matter would produce large amounts of neutrons and protons and the mass buildup would proceed in a Big-Bang nucleosynthesis like scenario. The neutron to proton ratio would allow to reach the iron peak only, a very different prediction from the standard scenario. The resultant light curve indicate it may be compatible with that of a kilonova depending on the specific details of the ejecta.
format Articulo
Articulo
author Paulucci, Laura
Horvath, Jorge Ernesto
Benvenuto, Omar Gustavo
author_facet Paulucci, Laura
Horvath, Jorge Ernesto
Benvenuto, Omar Gustavo
author_sort Paulucci, Laura
title Nucleosynthesis in Strange Star Mergers
title_short Nucleosynthesis in Strange Star Mergers
title_full Nucleosynthesis in Strange Star Mergers
title_fullStr Nucleosynthesis in Strange Star Mergers
title_full_unstemmed Nucleosynthesis in Strange Star Mergers
title_sort nucleosynthesis in strange star mergers
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/124031
work_keys_str_mv AT pauluccilaura nucleosynthesisinstrangestarmergers
AT horvathjorgeernesto nucleosynthesisinstrangestarmergers
AT benvenutoomargustavo nucleosynthesisinstrangestarmergers
bdutipo_str Repositorios
_version_ 1764820450699902978

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