8–13 Sept 2025
Integrated Innovation Building (IIB), RIKEN Kobe Campus
Asia/Tokyo timezone
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Impact of the nuclear equation of state on the formation of twin stars

9 Sept 2025, 16:50
2h 10m
Auditorium (8F) (Integrated Innovation Building (IIB), RIKEN Kobe Campus)

Auditorium (8F)

Integrated Innovation Building (IIB), RIKEN Kobe Campus

Minatojima-minamimachi 6-7-1, Kobe, Japan
8. Theory of compact stars, including neutron star mergers and supernovae NuSym Poster Session

Speaker

Naibo Zhang (Southeast University)

Description

By inverting the observational data of several neutron star observables in the three-dimensional parameter space of the constant speed of sound (CSS) model while fixing all hadronic equation-of-state parameters at their currently known most probable values, we constrain the properties of the first-order phase transition from hadronic to quark matter, as well as the speed of sound in quark matter. We further discuss the potential existence of twin neutron stars (two stable star with same mass but different radii) and analyze how nuclear EOS and crust-core transition density impact twin star formation. Our results show that the symmetry energy of neutron-rich nucleonic matter significantly affects twin star formation, particularly through its slope $L$ and curvature $K_{\rm sym}$.

Presentation Style Poster Presentation

Author

Naibo Zhang (Southeast University)

Presentation materials

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