Imprints of the nuclear symmetry energy on the tidal deformability of neutron stars

Krastev, Plamen G.; Li, Bao-An

doi:10.1088/1361-6471/ab1a7a

Imprints of the nuclear symmetry energy on the tidal deformability of neutron stars

Journal Article · Wed May 15 00:00:00 EDT 2019 · Journal of Physics. G, Nuclear and Particle Physics

DOI:https://doi.org/10.1088/1361-6471/ab1a7a· OSTI ID:1658224

^[1]; ^[2]

Harvard Univ., Cambridge, MA (United States); Texas A&M University-Commerce
Texas A & M Univ., Commerce, TX (United States)

Applying an equation of state (EOS) with its symmetric nuclear matter contribution and low-density symmetry energy E_sym(ρ) constrained by heavy-ion reaction data, we calculate the dimensionless tidal deformability Λ of neutron stars in coalescing binary systems. Corresponding to the partially constrained EOS that previously predicted a radius of 11.5 km ≤ $${R}_{1.4}$$ ≤ 13.6 km for canonical neutron-star configurations, Λ is found to be in the range of 292 ≤ $${{\rm{\Lambda }}}_{1.4}$$ ≤ 680, consistent with the very recent observation of the GW170817 event. Here, we investigate the effect of the high-density behavior of E_sym(ρ) on the tidal properties of neutron stars and find that while Λ depends strongly on the details of the symmetry energy, different trends of E_sym(ρ) lead to very similar values of Λ. In particular, the transition from stiff/soft-to-soft/stiff E_sym(ρ) could yield the same Λ. Thus, measuring Λ alone may not determine completely the density dependence of the symmetry energy. Coherent analyses of the dense neutron-rich nuclear matter EOS underlying both nuclear laboratory experiments and astrophysical observations are therefore necessary to break this degeneracy and determine precisely the details of the E_sym(ρ).

View Accepted Manuscript (DOE)

Research Organization:: Texas A & M Univ., Commerce, TX (United States)

Sponsoring Organization:: National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0009971; SC0013702

OSTI ID:: 1658224

Alternate ID(s):: OSTI ID: 1611282
OSTI ID: 22899626

Journal Information:: Journal of Physics. G, Nuclear and Particle Physics, Journal Name: Journal of Physics. G, Nuclear and Particle Physics Journal Issue: 7 Vol. 46; ISSN 0954-3899

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Momentum dependence of the symmetry potential and nuclear reactions induced by neutron-rich nuclei at RIA Li, Bao-An; Das, Champak B.; Gupta, Subal Das arXiv https://doi.org/10.48550/arxiv.nucl-th/0312032	text	January 2003
Determination of the stiffness of the nuclear symmetry energy from isospin diffusion Chen, Lie-Wen; Ko, Che Ming; Li, Bao-An arXiv https://doi.org/10.48550/arxiv.nucl-th/0407032	text	January 2004
Isospin Asymmetry in Nuclei and Neutron Stars Steiner, Andrew W.; Prakash, Madappa; Lattimer, James M. arXiv https://doi.org/10.48550/arxiv.nucl-th/0410066	text	January 2004
Isospin Diffusion in Heavy-Ion Collisions and the Neutron Skin Thickness of Lead Steiner, Andrew W.; Li, Bao-An arXiv https://doi.org/10.48550/arxiv.nucl-th/0505051	text	January 2005
Nucleon-nucleon cross sections in neutron-rich matter and isospin transport in heavy-ion reactions at intermediate energies Li, Bao-An; Chen, Lie-Wen arXiv https://doi.org/10.48550/arxiv.nucl-th/0508024	text	January 2005
Neutron star properties and the equation of state of neutron-rich matter Krastev, Plamen G.; Sammarruca, Francesca arXiv https://doi.org/10.48550/arxiv.nucl-th/0601065	text	January 2006
Effects of isospin and momentum dependent interactions on liquid-gas phase transition in hot asymmetric nuclear matter Xu, Jun; Chen, Lie-Wen; Li, Bao-An arXiv https://doi.org/10.48550/arxiv.nucl-th/0702085	text	January 2007
The equation of state for nucleon matter and neutron star structure Akmal, A.; Pandharipande, V. R.; Ravenhall, D. G. arXiv https://doi.org/10.48550/arxiv.nucl-th/9804027	text	January 1998
GW170817: Observation of gravitational waves from a binary neutron star inspiral Abbott, B. P.; Abbott, R.; Abbott, T. D. American Physical Society https://doi.org/10.5167/uzh-147231	text	January 2017
Multi-messenger Observations of a Binary Neutron Star Merger Abbott, B. P.; Abbott, R.; Abbott, T. D. Karlsruhe https://doi.org/10.5445/ir/1000075998#verlagsausgabe	text	January 2017

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High-density nuclear symmetry energy extracted from astrophysical observations Li, Bao-An; Krastev, P. G.; Wen, De-Hua XIAMEN-CUSTIPEN WORKSHOP ON THE EQUATION OF STATE OF DENSE NEUTRON-RICH MATTER IN THE ERA OF GRAVITATIONAL WAVE ASTRONOMY, AIP Conference Proceedings https://doi.org/10.1063/1.5117808	conference	January 2019
Tidal deformability of binary neutron stars employing equation of state with LOCV approach Sharifi, Z.; Bigdeli, M. Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 12 https://doi.org/10.1088/1361-6471/ab4ec9	journal	November 2019
Role of the symmetry energy and the neutron-matter stiffness on the tidal deformability of a neutron star with unified equations of state Perot, L.; Chamel, N.; Sourie, A. Physical Review C, Vol. 100, Issue 3 https://doi.org/10.1103/physrevc.100.035801	journal	September 2019
Effects of nuclear symmetry energy and equation of state on neutron star properties Ji, Fan; Hu, Jinniu; Bao, Shishao Physical Review C, Vol. 100, Issue 4 https://doi.org/10.1103/physrevc.100.045801	journal	October 2019
Towards understanding astrophysical effects of nuclear symmetry energy Li, Bao-An; Krastev, Plamen G.; Wen, De-Hua The European Physical Journal A, Vol. 55, Issue 7 https://doi.org/10.1140/epja/i2019-12780-8	journal	July 2019
Implications of the Mass $M={2.17}_{-0.10}^{+0.11}$ M _⊙ of PSR J0740+6620 on the Equation of State of Super-dense Neutron-rich Nuclear Matter Zhang, Nai-Bo; Li, Bao-An The Astrophysical Journal, Vol. 879, Issue 2 https://doi.org/10.3847/1538-4357/ab24cb	journal	July 2019
The Equation of State and Some Key Parameters of Neutron Stars: Constraints from GW170817, the Nuclear Data, and the Low-mass X-Ray Binary Data Jiang, Jin-Liang; Tang, Shao-Peng; Shao, Dong-Sheng The Astrophysical Journal, Vol. 885, Issue 1 https://doi.org/10.3847/1538-4357/ab44b2	journal	October 2019
Measurement of the Nuclear Symmetry Energy Parameters from Gravitational-wave Events Raithel, Carolyn A.; Özel, Feryal The Astrophysical Journal, Vol. 885, Issue 2 https://doi.org/10.3847/1538-4357/ab48e6	journal	November 2019
Effects of nuclear symmetry energy and equation of state on neutron star properties Ji, Fan; Hu, Jinniu; Bao, Shishao arXiv https://doi.org/10.48550/arxiv.1910.02266	text	January 2019
Role of the symmetry energy and the neutron-matter stiffness on the tidal deformability of a neutron star with unified equations of state Perot, Loic; Chamel, Nicolas; Sourie, Aurélien arXiv https://doi.org/10.48550/arxiv.1910.13202	text	January 2019

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