论文标题
磁场的重力辐射：应用于毫秒磁铁
Gravitational radiation by magnetic field: application to millisecond magnetars
论文作者
论文摘要
我们研究了磁场对重力波产生的直接贡献。为此，我们研究了磁化流体的纽顿后能量量张量，并研究了波区域中重力的牛顿后膨胀。我们表明，即使在多极矩张量的牛顿后的第一个后顺序中，磁场也会出现。然后，我们发现一种具有磁场贡献对众所周知的四极杆公式的显式相对论校正。作为这种推导的应用，我们发现在毫秒磁铁生命的早期释放的引力波的B场部分可能是由于变形的旋转中子星而言，信号中的一百分之一。我们表明，尽管该系统的事件速率很小，但信号将位于下一代检测器的灵敏度范围内。
We investigate the direct contribution of the magnetic field to the gravitational wave generation. To do so, we study the post-Newtonian energy-momentum tensor of the magnetized fluid and the post-Newtonian expansion of the gravitational potential in the wave zone. We show that the magnetic field appears even in the first post-Newtonian order of the multipole moment tensor. Then, we find an explicit relativistic correction containing the magnetic field contribution to the well-known quadrupole formula. As an application of this derivation, we find that the B-field part of the gravitational waves released in the early stages of a millisecond magnetar's life can be as much as one-hundredth of the signals due to the deformed rotating neutron stars. We show that although the event rate of this system is small, the signal would lie in the sensitivity range of the next generation of detectors.
