A Dyson sphere around a black hole

@article{Hsiao2021ADS,
  title={A Dyson sphere around a black hole},
  author={Tiger Y.-Y. Hsiao and Tomotsugu Goto and Tetsuya Hashimoto and Daryl Joe D. Santos and Alvina Y. L. On and Ece Kilerci-Eser and Yi-Hang Valerie Wong and Seong Jin Kim and Cossas K.-W. Wu and Simon C.-C. Ho and Tingting Lu},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}
The search for extraterrestrial intelligence (SETI) has been conducted for nearly 60 yr. A Dyson sphere, a spherical structure that surrounds a star and transports its radiative energy outwards as an energy source for an advanced civilization, is one of the main targets of SETI. In this study, we discuss whether building a Dyson sphere around a black hole is effective. We consider six energy sources: (i) the cosmic microwave background, (ii) the Hawking radiation, (iii) an accretion disc, (iv… Expand

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