scholarly journals Critical density and impact ofΔ(1232)resonance formation in neutron stars

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
Bao-Jun Cai ◽  
Farrukh J. Fattoyev ◽  
Bao-An Li ◽  
William G. Newton
Keyword(s):  
Neutron Stars ◽  
Critical Density ◽  
Resonance Formation

RELATIVISTIC URCA PROCESSES IN NEUTRON STARS WITH AN ANTIKAON CONDESATE

2011 ◽  
Vol 20 (supp02) ◽  
pp. 146-151 ◽  
Author(s):  
MOISÉS RAZEIRA ◽  
ALEXANDRE MESQUITA ◽  
CÉSAR A. Z. VASCONCELLOS ◽  
ROSANA O. GOMES ◽  
AURORA PÉREZ MARTÍNEZ ◽  
...  
Keyword(s):  
Neutron Star ◽  
Neutron Stars ◽  
Nuclear Matter ◽  
Degrees Of Freedom ◽  
Critical Density ◽  
Heat Radiation ◽  
Critical Threshold ◽  
Neutron Star Matter ◽  
Isospin Asymmetry ◽  
Urca Process

A recently developed effective relativistic theory for nuclear matter is applied to the description of the cooling process of baryon degenerate neutron star matter through neutrino emission considering direct URCA processes. In our approach nucleons and antikaon condensates interact with σ, ω, ρ, δ and ς meson fields. Our results indicate a substantial decrease of the critical threshold density for the URCA process. This is because the presence of these interacting degrees of freedom increase the proportion of protons, producing simultaneously the reduction of the isospin asymmetry in nuclear matter. Our results also indicate that neutron stars with larger masses than MNE ~ 0.9M⊙, which represents the stellar critical threshold (the mass of the neutron star whose baryon central density reached the critical density) would be cooled efficiently and be outside the possibility of observation by heat radiation in a few years.

Neutron Stars and "Black Holes"

1973 ◽  
Vol 110 (7) ◽  
pp. 441 ◽  
Author(s):  
Ya.B. Zel'dovich
Keyword(s):  
Black Holes ◽  
Neutron Stars

Cooling of neutron stars and superfluidity in their cores

1999 ◽  
Vol 169 (8) ◽  
pp. 825 ◽  
Author(s):  
Dmitrii G. Yakovlev ◽  
Kseniya P. Levenfish ◽  
Yurii A. Shibanov
Keyword(s):  
Neutron Stars

Joule Heating and the Thermal Evolution of Old Neutron Stars

1998 ◽  
Vol 503 (1) ◽  
pp. 368-373 ◽  
Author(s):  
Juan A. Miralles ◽  
Vadim Urpin ◽  
Denis Konenkov
Keyword(s):  
Neutron Stars ◽  
Joule Heating ◽  
Thermal Evolution
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