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arXiv 1804.08770astro-ph.CO
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非维里化暗物质轴子的调制敏感搜索

Modulation Sensitive Search for Non-Virialized Dark-Matter Axions

J. Hoskins, N. Crisosto, J. Gleason, P. Sikivie, I. Stern, N. S. Sullivan, D. B. Tanner, C. Boutan, M. Hotz, R. Khatiwada, D. Lyapustin, A. Malagon, R. Ottens, … 展开作者

J. Hoskins, N. Crisosto, J. Gleason, P. Sikivie, I. Stern, N. S. Sullivan, D. B. Tanner, C. Boutan, M. Hotz, R. Khatiwada, D. Lyapustin, A. Malagon, R. Ottens, L. J Rosenberg, G. Rybka, J. Sloan, A. Wagner, D. Will, G. Carosi, D. Carter, L. D. Duffy, R. Bradley, J. Clarke, S. O'Kelley, K. van Bibber, E. J. Daw

摘要:

非维里化的暗物质轴子可能以低速弥散流的形式存在于银河系晕中。“轴子暗物质实验”利用一个沉浸在强静态磁场中的谐振腔,对这些轴子转化为微波光子进行了研究。在这些测量中的光子能量的扩展是在1 Hz及以下的光谱分辨率下测量的。如果能量变化如此之小,则由于地球的轨道和旋转运动而引起的任何真实轴子信号的频率调制将变得不可忽略。保守估计预期的信号调制,并用作搜索程序的指导。本次搜索所涵盖的光子频率为812 $-$ 852和858 $-$ 892 MHz,对应的轴子质量为3.36 $-$ 3.52和3.55 $-$ 3.69 μeV。没有发现轴子信号,并限制了这些群众的非维里化的轴子的最大局部密度。

英文摘要:

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

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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