A Dyson Sphere around a black hole · HackerPapers discussions

A Dyson Sphere around a black hole — mentioned by raattgift

Thu, 19 Aug 2021 09:02:46 GMT

Thank you for asking for that, it motivated a few minutes of reading several short papers I likely otherwise never would have seen. https://arxiv.org/abs/2106.15181 is the preprint. The authors' model rests on an asymptotically flat incoming Vaidya spacetime[1] equipped with a cosmic microwave background that dilutes away over time (like the real CMB) but without the worries of tracking the cosmological constant sufficiently near the black hole. They unsurprisingly find that the energy budget from the background light that collides into the black hole in this model is an uninteresting part of…

Paper and discussion history. A mention is not an endorsement.

A Dyson Sphere around a black hole — mentioned by NKosmatos

Thu, 19 Aug 2021 08:26:24 GMT

https://arxiv.org/abs/2106.15181

Paper and discussion history. A mention is not an endorsement.

A Dyson Sphere around a black hole — mentioned by saagarjha

Thu, 19 Aug 2021 05:02:02 GMT

Better link: https://arxiv.org/abs/2106.15181 The results are fairly obvious: CMB and Hawking radiation provide almost zero power output, while an accretion disk and relativistic jets can provide a lot of power.

Paper and discussion history. A mention is not an endorsement.

A Dyson Sphere around a black hole — HN submission

Thu, 19 Aug 2021 03:40:00 GMT

A Dyson sphere around a black hole

214 points; 231 discussion replies on HN. Paper and source history. A submission is not an endorsement.