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THE CRITICAL ROTATION OF STRANGE STARS AND RAPIDLY ROTATING PULSARS

机译:恒星的临界旋转和快速旋转的脉冲

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We utilize the bulk viscosity of interacting strange quark matter to reevaluate the damping timescale. The presence of a medium effect of bulk viscosity leads to a stronger damping of r-modes, which can be over an order of magnitude for realistic parameters. We find that the r-mode instability window is narrowed because of the medium effect, and hence, when a pulsar reaches the instability window, it will slow down by gravitational wave emission to a period of only 1.78 ms instead of the 2.5 ms given by early estimates. As a theoretical upper rotation limit of pulsars, the period of 1.78 ms is very close to the two most rapidly spinning pulsars known, with periods of about 1.6 ms.
机译:我们利用相互作用的夸克物质的整体粘度重新评估阻尼时间尺度。体粘度的中等影响的存在导致r模式的更强阻尼,对于实际参数,它可能超过一个数量级。我们发现,由于介质效应,r型不稳定性窗口变窄,因此,当脉冲星到达不稳定性窗口时,它将因引力波发射而减慢到只有1.78 ms的周期,而不是由2.5 ms给出的2.5 ms。早期估计。作为脉冲星的理论上旋转上限,1.78 ms的周期非常接近已知的两个旋转速度最快的脉冲星,周期约为1.6 ms。

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