| Автор | Thibault Damour |
| Дата выпуска | 1995-03-01 |
| dc.description | The absence of gravitational radiation in Kinnersley's `photon rocket' solution of Einstein's equations is clarified by studying the mathematically well defined problem of point-like photon rockets in Minkowski space (i.e. massive particles emitting null fluid anisotropically and accelerating because of the recoil). We explicitly compute the (uniquely defined) linearized retarded gravitational waves emitted by such objects, which are the coherent superposition of the gravitational waves generated by the motion of the massive point-like rocket and of those generated by the energy--momentum distribution of the photon fluid. In the special case (corresponding to Kinnersley's solution) where the anisotropy of the photon emission is purely dipolar we find that the gravitational wave amplitude generated by the energy--momentum of the photons exactly cancels the usual 1/r gravitational wave amplitude generated by the accelerated motion of the rocket. More general photon anisotropies would, however, generate genuine gravitational radiation at infinity. Our explicit calculations show the compatibility between the non-radiative character of Kinnersley's solution and the currently used gravitational wave generation formalisms based on post-Minkowskian perturbation theory. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Photon rockets and gravitational radiation |
| Тип | paper |
| DOI | 10.1088/0264-9381/12/3/011 |
| Electronic ISSN | 1361-6382 |
| Print ISSN | 0264-9381 |
| Журнал | Classical and Quantum Gravity |
| Том | 12 |
| Первая страница | 725 |
| Последняя страница | 737 |
| Аффилиация | Thibault Damour; Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette, France; DARC, CNRS--Observatoire de Paris, 92195 Meudon, France |
| Выпуск | 3 |
