Modulation Sensitive Search for Non-Virialized Dark-Matter Axions
Abstract
Non-virialized dark-matter axions may be present in the Milky Way halo in the form of low-velocity-dispersion flows. The Axion Dark Matter eXperiment performed a search for the conversion of these axions into microwave photons using a resonant cavity immersed in a strong, static magnetic field. The spread of photon energy in these measurements was measured at spectral resolutions of the order of 1 Hz and below. If the energy variation were this small, the frequency modulation of any real axion signal due to the orbital and rotational motion of the Earth would become non-negligible. Conservative estimates of the expected signal modulation were made and used as a guide for the search procedure. The photon frequencies covered by this search are 812852 and 858892 MHz, which correspond to an axion mass of 3.363.52 and 3.553.69 {\mu}eV. No axion signal was found, and limits were placed on the maximum local density of non-virialized axions of these masses.
Keywords
Cite
@article{arxiv.1804.08770,
title = {Modulation Sensitive Search for Non-Virialized Dark-Matter Axions},
author = {J. Hoskins and N. Crisosto and J. Gleason and P. Sikivie and I. Stern and N. S. Sullivan and D. B. Tanner and C. Boutan and M. Hotz and R. Khatiwada and D. Lyapustin and A. Malagon and R. Ottens and L. J Rosenberg and G. Rybka and J. Sloan and A. Wagner and D. Will and G. Carosi and D. Carter and L. D. Duffy and R. Bradley and J. Clarke and S. O'Kelley and K. van Bibber and E. J. Daw},
journal= {arXiv preprint arXiv:1804.08770},
year = {2018}
}
Comments
12 pages, 12 figures