OPATRNÝ, Tomáš, Lukáš RICHTEREK and Pavel BAKALA. Life under a black sun. American Journal of Physics. 2017, vol. 85, No 1, p. 14-22. ISSN 0002-9505. Available from: https://dx.doi.org/10.1119/1.4966905.
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Basic information
Original name Life under a black sun
Authors OPATRNÝ, Tomáš (203 Czech Republic), Lukáš RICHTEREK (203 Czech Republic) and Pavel BAKALA (203 Czech Republic, guarantor, belonging to the institution).
Edition American Journal of Physics, 2017, 0002-9505.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW American Journal of Physics
RIV identification code RIV/47813059:19240/17:A0000060
Organization Filozoficko-přírodovědecká fakulta – Slezská univerzita v Opavě – Repository
Doi http://dx.doi.org/10.1119/1.4966905
UT WoS 000391941800004
Keywords in English life; Dyson sphere; Interstellar; energy
Tags ÚF
Tags International impact, Reviewed
Changed by Changed by: Jan Hladík, učo 1305. Changed: 5/4/2018 15:54.
Abstract
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.
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