Halo Drive：通过回旋回旋镖光子实现大质量的无燃料相对论推进
The Halo Drive: Fuel-Free Relativistic Propulsion of Large Masses via Recycled Boomerang Photons
摘要：
在致密双星中，围绕中子星的引力弹弓被认为是一种将大质量加速到潜在相对论速度的方法。这样的弹弓是有吸引力的，因为燃料不用于加速，但它确实需要航天器潜入近距离的双星，这可能是危险的。这里提出，这样的弹弓可以远程使用光束，它遵循一个回旋零测地线。利用一个移动的黑洞作为引力镜，来自黑洞的动能被转移到光束中作为蓝移，在返回时，回收的光子不仅加速了航天器，而且增加了航天器的能量。这里表明，这种获得的能量可以在以后消耗达到黑洞速度的约133%的终极速度。一个文明可以利用黑洞作为银河系的航路点，但很难远程探测到，除非提高了双星合并率和过度的双星偏心率。
英文摘要：
Gravitational slingshots around a neutron star in a compact binary have been proposed as a means of accelerating large masses to potentially relativistic speeds. Such a slingshot is attractive since fuel is not expended for the acceleration, however it does entail a spacecraft diving into close proximity of the binary, which could be hazardous. It is proposed here that such a slingshot can be performed remotely using a beam of light which follows a boomerang null geodesic. Using a moving black hole as a gravitational mirror, kinetic energy from the black hole is transferred to the beam of light as a blueshift and upon return the recycled photons not only accelerate, but also add energy to, the spacecraft. It is shown here that this gained energy can be later expended to reach a terminal velocity of approximately 133% the velocity of the black hole. A civilization could exploit black holes as galactic way points but would be difficult to detect remotely, except for an elevated binary merger rate and excess binary eccentricity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
