Author:
Nguyen Ngan H.,Tanin Erwin H.,Kamionkowski Marc
Abstract
Abstract
We compute the detailed energy spectra of axions with two-photon coupling produced in
stellar cores over a wide range of stellar masses. We focus on main sequence stars and base our
calculations on the stellar interior profiles from MESA, for which we provide simple fits in an
appendix. The obtained stellar axion spectra, combined with recent models of star formation
history and stellar initial mass function, enable us to estimate the properties of the diffuse
axion background sourced by all the stars in the universe. The fluxes of this stellar axion
background and its decay photons are subdominant to but can in principle be disentangled from
those expected from the Sun and the early universe based on their different spectral and spatial
profiles.
Subject
Astronomy and Astrophysics
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