AI 中文总结
本研究利用低频阵列对脉冲星PSR J0814+7429进行高时间分辨率旋转量监测，分离电离层贡献后重建其电子密度日变化，验证了脉冲星可作为探测电离层电子密度时间变化的探针。
AI 中文摘要
我们利用低频阵列（LOw-Frequency ARray）对PSR J0814+7429进行了高时间分辨率的10分钟旋转量（RM）监测，旨在探测脉冲星视线（LoS）方向上的电离层变化。通过从观测到的旋转量中分离出电离层贡献，我们基于世界磁场模型（World Magnetic Model）定量重建了脉冲星视线方向上电离层电子密度的日变化。所得变化呈现出明显的太阳驱动调制，包括电离层正午的“蚀失（bite-out）”现象，且与从独立的全球垂直总电子含量图重建的视线总电子含量吻合良好。这些结果证明了利用脉冲星作为探测地球电离层电子密度时间变化的探针的可行性。
英文摘要
We present high cadence 10-minute rotation measure (RM) monitoring of PSR~J0814+7429 using the LOw-Frequency ARray, aiming to probe ionospheric variability along the pulsar line of sight (LoS). By separating the ionospheric contribution from the observed RM, we quantitatively reconstruct the diurnal variation of the ionospheric electron density along the pulsar LoS based on the World Magnetic Model. The derived variations exhibit clear solar-driven modulation, including the ionospheric noontime bite-out phenomenon, and show good agreement with the LoS total electron content reconstructed from independent global vertical total electron content maps. These results demonstrate the feasibility of using pulsars as probes of temporal variations in the electron density of the Earth's ionosphere.
CommentsAccepted for publication in APJL
