2 papers
astro-ph.EP2026
An Approximately 70-Year Core-Related Modulation of Earth Rotation and Its Implications for the Leap Second
Zewen Zhang, Yuanwei Wu, Xishun Li +4
Recent observations of Universal Time (UT1) indicate an acceleration in Earth's rotation. If sustained under the current leap-second framework, this behavior could eventually promp…
astro-ph.EP2026
Accuracy Analysis of VLBI Universal Time Measurement Based on a GNSS Single-Station Regional Ionospheric Model
Xu-chong Duan, Dang Yao, Yuan-wei Wu +3
Universal Time (UT1) is a key parameter characterizing Earth's rotation, and very long baseline interferometry (VLBI) is the mainstream technique for measuring UT1. To address the…