Planet-bound dark matter and the internal heat of Uranus, Neptune, and hot-Jupiter exoplanets
arXiv:0808.2823 · doi:10.1016/j.physletb.2008.12.023
Abstract
We suggest that accretion of planet-bound dark matter by the Jovian planets, and by hot-Jupiter exoplanets, could be a significant source of their internal heat. The anomalously low internal heat of Uranus would then be explained if the collision believed to have tilted the axis of Uranus also knocked it free of most of its associated dark matter cloud. Our considerations focus on the efficient capture of non-self-annihilating dark matter, but could also apply to self-annihilating dark matter, provided the capture efficiency is small enough that the earth heat balance constraint is obeyed.
Latex, 6 pages; v4 is final version to appear in Phys. Lett. B
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- A halo of trapped interstellar matter surrounding the solar system
- Cooling process of substellar objects in scalar-tensor gravity
- Monoenergetic Neutrinos from WIMP Annihilation in Jupiter
- Capture rate of weakly interacting massive particles (WIMPs) in binary star systems
- Probing Superheavy Dark Matter with Exoplanets
- Extending the Dark Matter Reach of Water Cherenkov Detectors using Jupiter
- Graviton spectrum in simplified Dark Matter models with graviton mediators in the de Sitter space