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@article{28269,
   author = {Opatrný, Tomáš and Richterek, Lukáš and Bakala, Pavel},
   article_number = {1},
   doi = {http://dx.doi.org/10.1119/1.4966905},
   keywords = {life; Dyson sphere; Interstellar; energy},
   language = {eng},
   issn = {0002-9505},
   journal = {American Journal of Physics},
   title = {Life under a black sun},
   url = {https://aapt.scitation.org/doi/full/10.1119/1.4966905},
   volume = {85},
   year = {2017}
}

TY  - JOUR
ID  - 28269
AU  - Opatrný, Tomáš - Richterek, Lukáš - Bakala, Pavel
PY  - 2017
TI  - Life under a black sun
JF  - American Journal of Physics
VL  - 85
IS  - 1
SP  - 14-22
EP  - 14-22
SN  - 0002-9505
KW  - life
KW  - Dyson sphere
KW  - Interstellar
KW  - energy
UR  - https://aapt.scitation.org/doi/full/10.1119/1.4966905
L2  - https://aapt.scitation.org/doi/full/10.1119/1.4966905
N2  - Life is dependent on the income of energy with low entropy and the disposal of energy with high entropy. On Earth, the low-entropy energy is provided by solar radiation and the high-entropy energy is disposed of as infrared radiation emitted into cold space. Here, we turn the situation around and imagine the cosmic background radiation as the low-entropy source of energy for a planet orbiting a black hole into which the high-entropy energy is expelled. We estimate the power that can be produced by thermodynamic processes on such a planet, with a particular interest in planets orbiting a fast rotating Kerr black hole as in the science fiction movie Interstellar. We also briefly discuss a reverse Dyson sphere absorbing cosmic background radiation from the outside and dumping waste energy to a black hole inside.
ER  - 

OPATRNÝ, Tomáš, Lukáš RICHTEREK a Pavel BAKALA. Life under a black sun. \textit{American Journal of Physics}. 2017, roč.~85, č.~1, s.~14-22. ISSN~0002-9505. Dostupné z: https://dx.doi.org/10.1119/1.4966905.