论文标题

关于磁场在二元中子星的动力学和重力波发射中的作用

On the role of magnetic fields into the dynamics and gravitational wave emission of binary neutron stars

论文作者

Lira, Mariana, Degollado, Juan Carlos, Moreno, Claudia, Núñez, Darío

论文摘要

用等效的单身描述将中性恒星的二元系统的二元系统与中子星的二元系统的磁相互作用进行建模,并在系统的灵感动力学中包括在系统的动力学中。此外,在灵感阶段,我们确定了磁相互作用在系统产生的波形中的作用,并获得了明确的公式,以减少恒星的分离,是时候达到最小半径,引力亮度和重力波的变化,这在四倍的近似值内。对于这些二进制文件中存在的磁场的幅度,我们能够证明它对可观察到的数量的影响是2PN校正的顺序,已经接近引力波观察者的检测范围。 %}我们还讨论了磁场可能具有更大影响的案例。

Modelling as a dipole the magnetic interaction of a binary system of neutron stars, we are able to include the magnetic effects in the Newtonian and in the inspiral dynamics of the system using an equivalent one-body description. Furthermore, in the inspiral stage we determine the role of the magnetic interaction in the waveforms generated by the system and obtain explicit formulas for the decrease in the separation of the stars, the time to reach a minimal radius, the gravitational luminosity and the change of gravitational wave frequency, all this within the quadrupole approximation. For the magnitude of the magnetic field that is consider to exist in these binaries $\sim 10^{16} {\rm G}$ we are able to show that its effect on the observable quantities is of the order of the 2PN correction, already close to the detection range of the gravitational waves observatories. %} We also discuss cases in which the magnetic field could have a more significant influence.

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