脉冲星“晃荡”所产生的引力辐射

本文得出了含有自引力、内应力和内部运动项的脉冲星“晃荡”的多极引力辐射公式,并用该公式估算了脉冲星Crab和Vela的引力辐射功率,最后讨论了该公式的理论意义。

WOBBLE" RADIATION FROM PULSARS

Extensive studies of the quadrupole-moment gravitational radiation under the assumption of 'weak stress', 'slow motion' and 'non-self-gravity' have been made. However, by taking into account of the self-gravity, internal stress and internal motion of the source and making relevant assumptions, we obtain the post-Newtonian multipole 'wobble' radiation formula by means of the general multipole-moment radiation formula put forward by Epstein and Wagoner. Furthermore, we use our formula to calculate the Crab pulsar (PSR 0531 21), the Vela pulsar (PSR 0833 - 45), and obtain the power to be 1.8 times that of quadrupole radiation. This shows that the excess part comes mainly from the self-gravity of the source. Thus, it is important to consider the self-gravity and to use multipole-moment radiation formula when the gravitational radiation from astrophysical sources is being studied.