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Title: Hyperons and neutron stars

Abstract

In this lecture I will briefly review some of the effects of hyperons on the properties of neutron and proto-neutron stars. In particular, I will revise the problem of the strong softening of the EoS, and the consequent reduction of the maximum mass, induced by the presence of hyperons, a puzzle which has become more intringuing and difficult to solve due the recent measurements of the unusually high masses of the millisecond pulsars PSR J1903+0327 (1.667±0.021M{sub ⊙}), PSR J1614–2230 (1.97±0.04M{sub ⊙}), and PSR J0348+0432 (2.01±0.04M{sub ⊙}). Finally, I will also examine the role of hyperons on the cooling properties of newly born neutron stars and on the so-called r-mode instability.

Authors:
 [1]
  1. Centro de Física Computacional, Department of Physics, University of Coimbra, PT-3004-516 Coimbra (Portugal)
Publication Date:
OSTI Identifier:
22391014
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1645; Journal Issue: 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 13-26 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; EQUATIONS OF STATE; HYPERONS; INSTABILITY; MASS; NEUTRON STARS; NEUTRONS; PROTOSTARS; PULSARS; STAR EVOLUTION

Citation Formats

Vidaña, Isaac. Hyperons and neutron stars. United States: N. p., 2015. Web. doi:10.1063/1.4909561.
Vidaña, Isaac. Hyperons and neutron stars. United States. doi:10.1063/1.4909561.
Vidaña, Isaac. Tue . "Hyperons and neutron stars". United States. doi:10.1063/1.4909561.
@article{osti_22391014,
title = {Hyperons and neutron stars},
author = {Vidaña, Isaac},
abstractNote = {In this lecture I will briefly review some of the effects of hyperons on the properties of neutron and proto-neutron stars. In particular, I will revise the problem of the strong softening of the EoS, and the consequent reduction of the maximum mass, induced by the presence of hyperons, a puzzle which has become more intringuing and difficult to solve due the recent measurements of the unusually high masses of the millisecond pulsars PSR J1903+0327 (1.667±0.021M{sub ⊙}), PSR J1614–2230 (1.97±0.04M{sub ⊙}), and PSR J0348+0432 (2.01±0.04M{sub ⊙}). Finally, I will also examine the role of hyperons on the cooling properties of newly born neutron stars and on the so-called r-mode instability.},
doi = {10.1063/1.4909561},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1645,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}