Detecting solar axions using earth's magnetic field

被引：32

作者：

Davoudiasl, Hooman ^{[1
]}

Huber, Patrick ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.97.141302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that solar axion conversion to photons in the Earth's magnetosphere can produce an x-ray flux, with average energy <omega > similar or equal to 4 keV, which is measurable on the dark side of the Earth. The smallness of the Earth's magnetic field is compensated by a large magnetized volume. For axion masses m(a) less than or similar to 10(-4) eV, a low-Earth-orbit x-ray detector with an effective area of 10(4) cm(2), pointed at the solar core, can probe the photon-axion coupling down to 10(-11) GeV-1, in 1 yr. Thus, the sensitivity of this new approach will be an order of magnitude beyond current laboratory limits.

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