标题： 宇宙磁场中高频率遗迹引力波转化为光子的转换过程 显示英文标题

标题： Conversion of high frequency relic gravitational waves into photons in cosmological magnetic field

摘要： 这项工作延续了文章[1]中的研究，我们在其中估算了Gertsenshtein效应对接收引力波频谱长波长部分的影响。 在这里，文中[1]推导出的Friedman-LeMaitre-Robertson-Walker宇宙中Gertsenshtein效应的微分方程组，在辐射主导时期的地平线下引力波状态下被简化。 然后，所得到的系统得到了解析解。 通过对解的分析得出结论，在磁场强度约为1纳高斯时，遗留下来的频率为$ k\gtrsim 10^{-11}$Hz 的引力波显著增加。 此外，文章最后讨论了结果对模型的依赖性。 显示英文摘要

摘要： This work continues the research presented in the article [1], where we estimate the Gertsenshtein effect's influence on the long-wavelength part of relic gravitational wave spectrum. Here, the differential equation system for the Gertsenshtein effect in Friedman-LeMaitre-Robertson-Walker universe, derived in [1], is simplified for gravitational waves in the under-horizon regime during radiation dominance epoch. Then, the obtained system is solved analytically. As a result of the solution analysis a conclusion was made about a significant increase of relic GWs with the frequencies $ k\gtrsim 10^{-11}$ Hz for magnetic field strength about 1 nGs. In addition, at the end of the article model dependency of the result is discussed