Non-Virialized Axion Search Sensitive to Doppler Effects in the Milky Way Halo

• DOI: 10.48550/arxiv.2311.07748
• Publication Date: 2023-01-01
• Authors: Chelsea L. Bartram; T. Braine; R. Cervantes; N. Crisosto; N. Du; Craig A. Goodman; M. Guzzetti; C. Hanretty; Soohyung Lee; G. Leum; L. J. Rosenberg; G. Rybka; J. Sinnis; Dan Zhang; M. H. Awida; D. Bowring; A. Chou; M. Hollister; S. Knirck; A. Sonnenschein; W. C. Wester; Rakshya Khatiwada; J. Brodsky; G. Carosi; L. D. Duffy; Maxim Goryachev; Ben T. McAllister; A. Quiskamp; C. Thomson; Michael E. Tobar; C. Boutan; Mark Jones; B. H. LaRoque; Erik W. Lentz; N. E. Man; N. S. Oblath; Matthew S. Taubman; J. Yang; John Clarke; Irfan Siddiqi; Ankur Agrawal; Akash Dixit; J. R. Gleason; Y. Han; A. T. Hipp; S. Jois; P. Sikivie; N. S. Sullivan; D. B. Tanner; E. J. Daw; M. G. Perry; J. H. Buckley; C. Gaikwad; J. Hoffman; K. W. Murch; John A. Russell
• Keywords: Cold dark matter; Velocity dispersion

The Axion Dark Matter eXperiment (ADMX) has previously excluded Dine-Fischler-Srednicki-Zhitnisky (DFSZ) axions between 680-790 MHz under the assumption that dark matter is described by isothermal halo model. However, precise nature of velocity distribution still unknown, and alternative models have been proposed. We report results a non-virialized axion search over mass range 2.81-3.31 {\mu}eV, corresponding to frequency 680-800 MHz. This analysis marks most sensitive for Doppler effects in Milky Way Halo date. Accounting shifts due detector's motion through Galaxy, we exclude cold flow relic with dispersion order 10^-7 c 95% confidence.