Thermal Geo-axions
read the original abstract
We estimate the production rate of axion-type particles in the core of the Earth, at a temperature T~5000K. We constrain thermal geo-axion emission by demanding a core-cooling rate less than 100K/Gyr, as suggested by geophysics. This yields a "quasi-vacuum" (unaffected by extreme stellar conditions) bound on the axion-electron fine structure constant \alpha_a^{QV} < 10^{-18}, stronger than the existing accelerator (vacuum) bound by 4 orders of magnitude. We consider the prospects for measuring the geo-axion flux through conversion into photons in a geoscope; such measurements can further constrain \alpha_a^{QV}.
This paper has not been read by Pith yet.
Forward citations
Cited by 1 Pith paper
-
Thermal Emission of Dark Photons from Earth's Core
Estimates that Earth's core thermal emission of dark photons constrains new regions of the kinetic mixing parameter ε, with SENSEI/DAMIC-M already excluding some space and Oscura potentially improving by 2-3 orders of...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.