Modulation sensitive search for nonvirialized dark-matter axions

被引：19

作者：

Hoskins, J. ^{[1
]}

Crisosto, N. ^{[1
]}

Gleason, J. ^{[1
]}

Sikivie, P. ^{[1
]}

Stern, I. ^{[1
]}

Sullivan, N. S. ^{[1
]}

Tanner, D. B. ^{[1
]}

Boutan, C. ^{[2
]}

Hotz, M. ^{[2
]}

Khatiwada, R. ^{[2
]}

Lyapustin, D. ^{[2
]}

Malagon, A. ^{[2
]}

Ottens, R. ^{[2
]}

Rosenberg, L. J. ^{[2
]}

Rybka, G. ^{[2
]}

Sloan, J. ^{[2
]}

Wagner, A. ^{[2
,8
]}

Will, D. ^{[2
]}

Carosi, G. ^{[3
]}

Carter, D. ^{[3
]}

Duffy, L. D. ^{[4
]}

Bradley, R. ^{[5
]}

Clarke, J. ^{[6
]}

O'Kelley, S. ^{[6
]}

van Bibber, K. ^{[6
]}

Daw, E. J. ^{[7
]}

机构：

[1] Univ Florida, Gainesville, FL 32611 USA

[2] Univ Washington, Seattle, WA 98195 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

[5] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[6] Univ Calif Berkeley, Berkeley, CA 94720 USA

[7] Univ Sheffield, Western Bank, Sheffield S10 2TN, S Yorkshire, England

[8] Raytheon BBN Technol, Quantum Informat Div, 10 Moulton St, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW D | 2016年 / 94卷 / 08期

关键词：

INVISIBLE-AXION; CP CONSERVATION; HARMLESS AXION; COSMIC AXIONS; INVARIANCE; PARTICLES; DENSITY;

D O I：

10.1103/PhysRevD.94.082001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Nonvirialized 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 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 812-852 and 858-892 MHz, which correspond to an axion mass of 3.36-3.52 and 3.55-3.69 mu eV. No axion signal was found, and limits were placed on the maximum local density of nonvirialized axions of these masses.

引用

页数：13

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