On the Earth's tidal perturbations. II. LARES 2 satellite
V.G. Gurzadyan, I. Ciufolini, H.G. Khachatryan, S. Mirzoyan, A. Paolozzi
TL;DR
This paper analyzes Earth's tidal perturbations affecting the LARES 2 satellite to improve measurements of frame-dragging and geodesy, enhancing tests of General Relativity using laser-ranging data.
Contribution
It provides a detailed computation of 110 Earth's tidal modes specific to LARES 2, extending previous work on the LARES satellite for better gravitational measurements.
Findings
Identification of 110 significant tidal modes affecting LARES 2
Enhanced accuracy in frame-dragging measurements
Improved understanding of Earth's tidal influence on satellite data
Abstract
Laser-ranging satellites have proved their efficiency in high precision testing of General Relativity and constraining modified gravity theories proposed to explain the dark sector and the cosmological tensions. The LARES 2 satellite launched in 2022, is currently providing improved information regarding the frame-dragging effect predicted by General Relativity, as well as the geodesy, thus essentially complementing the data of already existing laser-ranging satellites. The proper knowledge of the Earth's tidal perturbation modes is essential for accurately extracting the sought frame-dragging signal. We present the results of computation of 110 significant modes in Doodson number classification for the parameters of LARES 2 satellite, continuing our previous study on those obtained for the LARES satellite.
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