Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI

  title={Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI},
  author={Stephen Kerby and Jason T. Wright},
  journal={The Astronomical Journal},
  • Stephen Kerby, Jason T. Wright
  • Published 17 September 2021
  • Physics
  • The Astronomical Journal
Several recent works have proposed a “stellar relay” transmission system in which a spacecraft at the focus of a star’s gravitational lens achieves dramatic boosts in the gain of an outgoing or incoming interstellar transmission. We examine some of the engineering requirements of a stellar relay system, evaluate the long-term sustainability of a gravitational relay, and describe the perturbations and drifts that must be actively countered to maintain a relay-star-target alignment. The major… 
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