Deconfinement Phase Transition in Relativistic Neutron Star Mergers
作者： G. Poghosyan , R. Oechslin , K. Uryū , F. K. Thielemann
关键词: Quadrupole 、 Gravitational wave 、 Deconfinement 、 Compact star 、 Binary system 、 Astrophysics 、 Phase transition 、 Neutron star 、 Physics 、 Strange matter
摘要: We consider the influence of deconfinement phase transition on gravitational waves (GW) emitted in a binary neutron star merger. perform 3D hydrody- namic simulations based conformally flat approximation to general rela- tivity and GW signal extracted up quadrupole order. vary initial constituent masses by use physically-motivated equations state (EoS) at zero temperature two ways - allowing stellar matter undergo or not hadron-quark transition. It has been shown, that for system close innermost stable circular orbit (ISCO) with grav- itational larger than M∞ 1.5 Mthe EoS dependent effects signals begin play role. The difference wave frequency ISCO is 10% maximal allowed mass given used model EsoS 1.75 M� . determine characteristic frequen- cies merger remnants, where pronounced implications quark show as post-merger signal, undergoing collapse does take place immediately after
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