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Record Details

Record 39 of 88666
Gravitational energy sources in Jupiter
External Online Source: doi:10.1086/152574
Author and Affiliation:
Flasar, F. M.(Harvard University, Cambridge, Mass., United States)
Abstract: Gravitational sources of the intrinsic luminosity of Jupiter are examined in the context of current hydrogen-helium models. When no gravitational separation of matter occurs, the amount of heat which can be released over the remaining lifetime of the planet is necessarily limited by the size of its existing reservoir of thermal energy. This conclusion rests only on the assumption that its interior is relatively cold and degenerate. If gravitational unmixing occurs, the size of the thermal reservoir does not necessarily limit the heat output. If core formation occurs, for example, then the size of the core formed will be a limiting factor. The energy released with the formation of a helium core is computed for Jupiter. A core growth rate, averaged over several billion years, of 20 trillionths of Jupiter's mass per year is required if gravitational separation is to play a significant role in the thermal evolution.
Publication Date: Dec 15, 1973
Document ID:
19740034380
(Acquired Dec 04, 1995)
Accession Number: 74A17130
Subject Category: SPACE SCIENCES
Document Type: Journal Article
Publication Information: Astrophysical Journal; 186; Dec. 15
Publisher Information: United States
Contract/Grant/Task Num: NGL-22-007-228
Financial Sponsor: NASA; United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENERGY SOURCES; GRAVITATIONAL EFFECTS; JUPITER (PLANET); LUMINOSITY; THERMAL ENERGY; ASTRONOMICAL MODELS; EQUATIONS OF STATE; GAS MIXTURES; HELIUM; HYDROGEN; PHASE TRANSFORMATIONS; PLANETARY EVOLUTION; WHITE DWARF STARS
Imprint And Other Notes: Astrophysical Journal, vol. 186, Dec. 15, 1973, pt. 1. p. 1097-1106.
Miscellaneous Notes: 1973, pt. 1. p. 1097-1106
Availability Source: Other Sources
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