Existence of hyperons in the pulsar PSRJ1614-2230

被引：46
作者：
Sulaksono, A. [2 ]
Agrawal, B. K. [1 ]
机构：
[1] Saha Inst Nucl Phys, Kolkata 700064, India
[2] Univ Indonesia, Dept Fis, FMIPA, Depok 16424, Indonesia
来源：
NUCLEAR PHYSICS A | 2012年 / 895卷
关键词：
Relativistic mean-field model; Dense matter; Neutron stars; MEAN-FIELD THEORY; NEUTRON-STARS; NUCLEAR-EQUATION; RECENT PROGRESS; STATE; MODELS; MATTER; HYPERNUCLEI; LAMBDA; MASS;
D O I：
10.1016/j.nuclphysa.2012.09.006
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The possibility of existence of hyperons in the recently measured 2M(circle dot) pulsar PSRJ1614-2230 is explored using a diverse set of nuclear equations of state calculated within the relativistic mean-field models. Our results indicate that the nuclear equations of state compatible with heavy-ion data allow the hyperons to exist in the PSRJ1614-2230 only for significantly larger values for the meson-hyperon coupling strengths. The maximum mass configurations for these cases contain sizable hyperon fractions (similar to 60%) and yet masquared their counterpart composed of only nucleonic matter. (c) 2012 Elsevier B.V. All rights reserved.
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页码：44 / 58
页数：15
相关论文
共 43 条
[21]   LARGE-MASS NEUTRON STARS WITH HYPERONIZATION [J].
Jiang, Wei-Zhou ;
Li, Bao-An ;
Chen, Lie-Wen .
ASTROPHYSICAL JOURNAL, 2012, 756 (01)
[22]   Constraints for weakly interacting light bosons from existence of massive neutron stars [J].
Krivoruchenko, M. I. ;
Simkovic, F. ;
Faessler, Amand .
PHYSICAL REVIEW D, 2009, 79 (12)
[23]   Observational constraints on hyperons in neutron stars [J].
Lackey, BD ;
Nayyar, M ;
Owen, BJ .
PHYSICAL REVIEW D, 2006, 73 (02)
[24]   New parametrization for the Lagrangian density of relativistic mean field theory [J].
Lalazissis, GA ;
Konig, J ;
Ring, P .
PHYSICAL REVIEW C, 1997, 55 (01) :540-543
[25]   Demonstration of the casimir force in the 0.6 to 6 mu m range [J].
Lamoreaux, SK .
PHYSICAL REVIEW LETTERS, 1997, 78 (01) :5-8
[26]   Neutron star observations: Prognosis for equation of state constraints [J].
Lattimer, James M. ;
Prakash, Madappa .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2007, 442 (1-6) :109-165
[27]   Chiral model approach to quark matter nucleation in neutron stars [J].
Logoteta, Domenico ;
Bombaci, Ignazio ;
Providencia, Constanca ;
Vidana, Isaac .
PHYSICAL REVIEW D, 2012, 85 (02)
[28]   Stronger constraints on non-Newtonian gravity from the Casimir effect [J].
Mostepanenko, V. M. ;
Decca, R. S. ;
Fischbach, E. ;
Klimchitskaya, G. L. ;
Krause, D. E. ;
Lopez, D. .
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2008, 41 (16)
[29]   THE MASSIVE PULSAR PSR J1614-2230: LINKING QUANTUM CHROMODYNAMICS, GAMMA-RAY BURSTS, AND GRAVITATIONAL WAVE ASTRONOMY [J].
Oezel, Feryal ;
Psaltis, Dimitrios ;
Ransom, Scott ;
Demorest, Paul ;
Alford, Mark .
ASTROPHYSICAL JOURNAL LETTERS, 2010, 724 (02) :L199-L202
[30]   Outer crust of nonaccreting cold neutron stars [J].
Rüster, SB ;
Hempel, M ;
Schaffner-Bielich, J .
PHYSICAL REVIEW C, 2006, 73 (03)
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