Constraints on the Moment of Inertia of a Proto Neutron Star from the Hyperon Coupling Constants

2012 ◽  
Vol 33 (3) ◽  
pp. 303-310
Author(s):  
Xian-Feng Zhao ◽  
Huan-Yu Jia
Keyword(s):  
Neutron Star ◽  
Moment Of Inertia ◽  
Coupling Constants ◽  
The Moment ◽  
Proto Neutron Star

On the moment of inertia of a proto neutron star

2010 ◽  
Vol 34 (10) ◽  
pp. 1587-1592
Author(s):  
Zhao Xian-Feng ◽  
Zhang Hua ◽  
Jia Huan-Yu
Keyword(s):  
Neutron Star ◽  
Moment Of Inertia ◽  
The Moment ◽  
Proto Neutron Star

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 Application of Regge Theory to Astronomical Objects

Physics ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 669-677
Author(s):  
Gurgen G. Adamian ◽  
Nikolai V. Antonenko ◽  
Horst Lenske ◽  
Vazgen V. Sargsyan
Keyword(s):  
Neutron Star ◽  
Binary Systems ◽  
Rotation Frequency ◽  
Moment Of Inertia ◽  
Clusters Of Galaxies ◽  
Observable Universe ◽  
Regge Theory ◽  
Instability Effect ◽  
Analytical Formulas ◽  
The Moment

Using the model based on the Regge-like laws, new analytical formulas are obtained for the moment of inertia, the rotation frequency, and the radius of astronomical non-exotic objects (planets, stars, galaxies, and clusters of galaxies). The rotation frequency and moment of inertia of a neutron star and the observable Universe are estimated. The estimates of the average numbers of stars and galaxies in the observable Universe are given. The Darwin instability effect in the binary systems (di-planets, di-stars, and di-galaxies) is also analyzed.

scholarly journals Roles of crust and core in the tidal deformability of neutron stars

2019 ◽  
Vol 28 (09) ◽  
pp. 1950081 ◽  
Author(s):  
A. M. Kalaitzis ◽  
T. F. Motta ◽  
A. W. Thomas
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Dense Matter ◽  
Moment Of Inertia ◽  
Recent Measurement ◽  
Low Density ◽  
Important Constraint ◽  
The Moment

With the recent measurement of GW170817 providing constraints on the tidal deformability (TD) of a neutron star, it is very important to understand what features of the equation of state (EoS) have the biggest effect on it. We therefore study the contribution of the crust to the TD and the moment of inertia (MoI) of a neutron star for a variety of well-known EoS. It is found that the contributions to these quantities from the low-density crust are typically quite small and as a result the determination of the TD provides an important constraint on the EoS of dense matter.

PROPERTIES OF HOT NEUTRON STAR

2003 ◽  
Vol 12 (07) ◽  
pp. 1241-1254
Author(s):  
C. DAS ◽  
P. K. PANDA ◽  
M. ADHIKARY
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Neutron Matter ◽  
Moment Of Inertia ◽  
Gravitational Radius ◽  
Period Increase ◽  
Pion Condensation ◽  
Pure Neutron Matter ◽  
The Moment ◽  
Tov Equation

The properties of neutron star at temperatures 5 MeV, 10 MeV and 15 MeV are calculated by solving Tolmann–Oppenheimer–Volkoff (TOV) equation. The required equation of state of pure neutron matter is obtained using density dependent Sussex interaction. It is observed that maximum stable mass of the star corresponds to minimum gravitational radius for a given equation of state. Just like the limiting mass, limiting value of redshift, moment of inertia, Kepler frequency as well as Kepler period are observed in case of the neutron star. It is found that the star become somewhat 'massive' and 'fat' at higher temperatures. With the increase in temperature the moment of inertia and Kepler rotational period increase but redshift decreases and Kepler frequency slows down. We also predict that there is a possibility of pion condensation in pure neutron matter.

Perception of the moment of inertia of hand tools

1982 ◽  
Author(s):  
Carol Zahner ◽  
M. Stephen Kaminaka
Keyword(s):  
Moment Of Inertia ◽  
Hand Tools ◽  
The Moment
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