论文标题
Argo-YBJ和Fermi-Lat对MRK 421的轴突样颗粒的限制限制
Limits on axion-like particles from Mrk 421 with 4.5-year period observations by ARGO-YBJ and Fermi-LAT
论文作者
论文摘要
在这项工作中，我们使用4。5年的天体物理辐射（Yangbajing（Argo-YBJ））和Fermi大面积远程（Fermi大面积（Fermi）远程（Fermi-Lat）数据，我们使用4.5年的天体辐射研究了Blazar Markarian 421（MRK 421）的光谱中的轴突样粒子（ALP） - 光子振荡效应。这些数据是在公共操作时间期间收集的，该数据涵盖了MRK 421的十个活性阶段。没有明显的ALP-PHOTON振荡效应。另一方面，并非可以单独使用十个阶段的所有观察结果来设置ALP参数空间上的95％置信度（$ \ rm c.l. $）的约束。但是，如果将十个阶段的分析组合在一起，则可以显着改善约束。我们发现，Alp-Photon耦合$ g_ {Aγ} $由Argo-Ybj和Fermi-lat的MRK 421的观察值在$ \ sim [2 \ sim [2 \ sim [2 \ times times times 10^{-11}，\ 6 \ 6 \ 6 \ times times times times times times times times 10^{-111} {-111} { - $ \ sim 5 \ times 10^{ - 10} $ ev $ \ simsim m_a \ sillsim 5 \ times 10^{ - 7} \，\ rm ev $。
In this work, we investigate the axion-like particle (ALP)-photon oscillation effect in the spectra of the blazar Markarian 421 (Mrk 421) using 4.5 years of the Astrophysical Radiation with Ground-based Observatory at YangBaJing (ARGO-YBJ) and Fermi Large Area Telescope (Fermi-LAT) data. These data are collected during the common operation time, which cover ten activity phases of Mrk 421. No significant ALP-photon oscillation effect is confirmed. On the other hand, not all the observations of the ten phases can be individually used to set the 95% confidence level ($\rm C.L.$) constraint on the ALP parameter space. However, the constraint can be significantly improved if the analyses for the ten phases are combined. We find that the upper limit at 95% $\rm C.L.$ on the ALP-photon coupling $g_{aγ}$ set by the ARGO-YBJ and Fermi-LAT observations of Mrk 421 is within $\sim [2\times 10^{-11}, \ 6\times 10^{-11}] \rm \, GeV^{-1}$ for the ALP mass of $\sim 5\times 10^{-10}$ eV $\lesssim m_a \lesssim 5\times 10^{-7}\, \rm eV$.
