scholarly journals A relativistic quantum approach to neutrino and antineutrino emission via the direct Urca process in strongly magnetized neutron-star matter

2021 ◽  
pp. 136813
Author(s):  
Tomoyuki Maruyama ◽  
A. Baha Balantekin ◽  
Myung-Ki Cheoun ◽  
Toshitaka Kajino ◽  
Motohiko Kusakabe ◽  
...  
Keyword(s):  
Neutron Star ◽  
Relativistic Quantum ◽  
Neutron Star Matter ◽  
Quantum Approach ◽  
Urca Process

scholarly journals νν¯-Pair synchrotron emission in neutron-star matter based on a relativistic quantum approach

2020 ◽  
Vol 805 ◽  
pp. 135413
Author(s):  
Tomoyuki Maruyama ◽  
A. Baha Balantekin ◽  
Myung-Ki Cheoun ◽  
Toshitaka Kajino ◽  
Grant J. Mathews
Keyword(s):  
Neutron Star ◽  
Relativistic Quantum ◽  
Synchrotron Emission ◽  
Neutron Star Matter ◽  
Quantum Approach

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.

A set of new nucleon coupling constants and the proto neutron star matter

2012 ◽  
Vol 21 (8) ◽  
pp. 089701
Author(s):  
Xian-Feng Zhao ◽  
Huan-Yu Jia
Keyword(s):  
Neutron Star ◽  
Coupling Constants ◽  
Neutron Star Matter ◽  
Proto Neutron Star

scholarly journals Exact solution of equations for proton localization in neutron star matter

2015 ◽  
Vol 92 (5) ◽  
Author(s):  
Sebastian Kubis ◽  
Włodzimierz Wójcik
Keyword(s):  
Exact Solution ◽  
Neutron Star ◽  
Neutron Star Matter ◽  
Solution Of Equations

scholarly journals Anomalous thermodynamics and phase transitions in neutron star matter

2007 ◽  
Vol 75 (6) ◽  
Author(s):  
C. Ducoin ◽  
K. H. O. Hasnaoui ◽  
P. Napolitani ◽  
Ph. Chomaz ◽  
F. Gulminelli
Keyword(s):  
Phase Transitions ◽  
Neutron Star ◽  
Neutron Star Matter

Proton Fraction in Hot Neutron Star Matter with a Chiral Hadronic Model

2002 ◽  
Vol 19 (10) ◽  
pp. 1432-1435 ◽  
Author(s):  
Guo Hua ◽  
Zhou Ran ◽  
Liu Yu-Xin
Keyword(s):  
Neutron Star ◽  
Neutron Star Matter ◽  
Hadronic Model

scholarly journals Delta baryons in neutron-star matter under strong magnetic fields

2021 ◽  
Vol 57 (7) ◽  
Author(s):  
Veronica Dexheimer ◽  
Kauan D. Marquez ◽  
Débora P. Menezes
Keyword(s):  
Neutron Star ◽  
Magnetic Fields ◽  
Neutron Star Matter ◽  
Strong Magnetic Fields
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