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Updated: Jun 19, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Galactic substructure and energetic neutrinos from the sun and earth
Savvas M Koushiappas1, Marc Kamionkowski
1Department of Physics, Brown University, Providence, Rhode Island 02912, USA. koushiappas@brown.edu
Abstract:
We consider the effects of Galactic substructure on energetic neutrinos from annihilation of weakly interacting massive particles that have been captured by the Sun and Earth. Substructure gives rise to a time-varying capture rate and thus to time variation in the annihilation rate and resulting energetic-neutrino flux. However, there may be a time lag between the capture and annihilation rates. The energetic-neutrino flux may then be determined by the density of dark matter in the Solar System's past trajectory, rather than the local density. The signature of such an effect may be sought in the ratio of the direct- to indirect-detection rates.
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