论文标题
中子星作为光子双镜头：将谐振转化为阿尔卑斯山
Neutron stars as photon double-lenses: constraining resonant conversion into ALPs
论文作者
论文摘要
轴突 - 光子转换是检测与光子耦合的轴突样颗粒的主要机制。我们指出，在具有强磁场的中子星附近，有效的光子质量获得了自由电子和辐射场的可比但相反的贡献。这导致了转化的能量依赖性共振条件，在使用具有检测到的无线电组件的系统时，可以为任意的光轴满足并利用。使用Magnetar SGR J1745-2900作为模范来源，我们证明了对$ | g_ {aγ} |的敏感性\ sim 10^{ - 12} \，\ rm {gev^{ - 1}} $或更好的获得$ m_a \ sillesim 10^{ - 6} \，\ rm eV $，有可能改善当前对Axion-Photon-Photon-Photon耦合的限制，而不是一个超过一个级别的范围。随着对磁铁磁层的物理条件的越来越多的见解，该方法具有成为认真的竞争者的潜力，例如ALPS-II和IAXO等未来实验，以寻找类似轴突的颗粒。
Axion-photon conversion is a prime mechanism to detect axion-like particles that share a coupling to the photon. We point out that in the vicinity of neutron stars with strong magnetic fields, magnetars, the effective photon mass receives comparable but opposite contributions from free electrons and the radiation field. This leads to an energy-dependent resonance condition for conversion that can be met for arbitrary light axions and leveraged when using systems with detected radio component. Using the magnetar SGR J1745-2900 as an exemplary source, we demonstrate that sensitivity to $|g_{aγ}| \sim 10^{-12}\,\rm{GeV^{-1}}$ or better can be gained for $m_a \lesssim 10^{-6}\,\rm eV$, with the potential to improve current constraints on the axion-photon coupling by more than one order of magnitude over a broad mass range. With growing insights into the physical conditions of magnetospheres of magnetars, the method hosts the potential to become a serious competitor to future experiments such as ALPS-II and IAXO in the search for axion-like particles.
