RX J1856−3754: Evidence for a Stiff Equation of State

2002 ◽  
Vol 580 (2) ◽  
pp. 1043-1047 ◽  
Author(s):  
Timothy M. Braje ◽  
Roger W. Romani
Keyword(s):  
Equation Of State ◽  
Stiff Equation

scholarly journals Stiff equation of state for a holographic nuclear matter as instanton gas

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Kazuo Ghoroku ◽  
Kouji Kashiwa ◽  
Yoshimasa Nakano ◽  
Motoi Tachibana ◽  
Fumihiko Toyoda
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
Stiff Equation

scholarly journals On Cooling of Neutron Stars with a Stiff Equation of State Including Hyperons

Universe ◽  
2018 ◽  
Vol 4 (2) ◽  
pp. 29 ◽  
Author(s):  
Hovik Grigorian ◽  
Evgeni Kolomeitsev ◽  
Konstantin Maslov ◽  
Dmitry Voskresensky
Keyword(s):  
Equation Of State ◽  
Neutron Stars ◽  
Stiff Equation

scholarly journals Hyperbolically Symmetric Versions of Lemaitre–Tolman–Bondi Spacetimes

Entropy ◽  
2021 ◽  
Vol 23 (9) ◽  
pp. 1219
Author(s):  
Luis Herrera ◽  
Alicia Di Prisco ◽  
Justo Ospino
Keyword(s):  
Equation Of State ◽  
Energy Density ◽  
Spherical Symmetry ◽  
Anisotropic Pressure ◽  
Common Features ◽  
Stiff Equation ◽  
All Solutions

We study fluid distributions endowed with hyperbolic symmetry, which share many common features with Lemaitre–Tolman–Bondi (LTB) solutions (e.g., they are geodesic, shearing, and nonconformally flat, and the energy density is inhomogeneous). As such, they may be considered as hyperbolic symmetric versions of LTB, with spherical symmetry replaced by hyperbolic symmetry. We start by considering pure dust models, and afterwards, we extend our analysis to dissipative models with anisotropic pressure. In the former case, the complexity factor is necessarily nonvanishing, whereas in the latter cases, models with a vanishing complexity factor are found. The remarkable fact is that all solutions satisfying the vanishing complexity factor condition are necessarily nondissipative and satisfy the stiff equation of state.

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