| タイトル | Determining gravitational radiation from Newtonian self-gravitating systems |
| 著者（英） | Evans, Charles R.; Finn, Lee Samuel |
| 著者所属（英） | Cornell Univ.|North Carolina Univ. |
| 発行日 | 1990-03-10 |
| 言語 | eng |
| 内容記述 | Quadrupole gravitational radiation formulas are tested and compared in a calculation of rotating stellar core collapse. While the standard quadrupole formula (SQF) allows an economical calculation of the waveform in postlinear gravity, it has several shortcomings that become apparent in a finite difference (FD) calculation. These shortcomings are related to the large-moment arm of the quadrupole moment and the two (numerical) time derivatives that separate it from the waveform. These shortcomings lead to high-frequency noise in the SQF waveform. Several alternatives to the SQF are developed. Each is mathematically equivalent to the SQF and applicable to self-gravitating sources. For FD calculations, the new quadrupole formulas are all superior to the SQF and capable of producing waveforms free of the high-frequency noise characteristics of its use. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 90A25914 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/357858 |
