标题： 参数在耀变体喷流磁场模型中对类轴子粒子约束的影响 显示英文标题

标题： Impact of Parameters in the Blazar Jet Magnetic Field Model on Axion-Like Particle Constraints

摘要： 轴子样粒子（ALPs）与光子之间的相互作用会在天体物理磁场中引起ALP-光子振荡，导致blazars的$\gamma$-ray谱出现谱形畸变。 这种现象的主要不确定性可能源于blazar喷流中的磁场。 虽然许多研究使用喷流磁场参数的典型值探讨了ALP-光子振荡的影响，但重要的是要认识到这些参数可以通过多波长观测进行约束。 在本研究中，我们利用MAGIC和Fermi-LAT观测获得的Mrk 421的高能$\gamma$-ray谱。 通过采用多波长拟合的一区同步自康普顿模型，我们推导出表征喷流中磁场模型的参数，并研究它们对ALP约束的影响。 显示英文摘要

摘要： The interaction between axion-like particles (ALPs) and photons induces ALP-photon oscillations in astrophysical magnetic fields, leading to spectral distortions in the $\gamma$-ray spectrum of blazars. The primary uncertainty of this phenomenon may originate from the magnetic field within the jet of the blazar. While many studies have explored the effects of ALP-photon oscillations using typical values for jet magnetic field parameters, it is important to recognize that these parameters can be constrained by multi-wavelength observations. In this study, we utilize the high energy $\gamma$-ray spectrum of Mrk 421 obtained from MAGIC and Fermi-LAT observations. By employing multi-wavelength fitting with a one-zone synchrotron self-Compton model, we derive the parameters characterizing the magnetic field model within the jet, and investigate their impacts on the ALP constraints.