Effects of Tidal Resonances in Coalescing Compact Binary Systems
Effects of Tidal Resonances in Coalescing Compact Binary Systems
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潮汐共振对聚结致密双星系统的影响
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
M. Shibata
中科院分区：
文献类型：
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作者：
M. Shibata
研究了潮汐共振对致密星双星（例如双中子星或中子星-黑洞双星）演化的影响。我们将 Press-Teukolsky 算法应用于一个简单的中子星模型，该模型的伴星沿圆形轨道运动。为了观察潮汐共振的影响，我们将恒星中沉积的能量与由于引力波发射而产生的圆周运动耗散的能量进行比较。研究发现，在现实情况下，g模共振振荡对双星系统的演化影响不大，而i模可能导致致密星双星从稳定的螺旋向不稳定的暴跌转变。
Effects of tidal resonances to the evolution of compact star binaries, such as binary neutron stars or neutron star-black hole binaries, are studied. We apply the Press-Teukolsky algorithm to a simple neutron star model whose companion moves with a circular orbit. To see effects of the tidal resonances, we compare the deposited energy in the star with the dissipated energy of a circular motion due to the emission of gravitational waves. It is found that under realistic situations, the g-mode resonance oscillations do not affect the evolution of binary systems so much, while the /-mode may induce a transition from a steady inspiral to an unstable plunge of compact star binaries.