Abstract

We summarize some critical issues pertaining the tests of the general relativistic Lense-Thirring effect performed by I. Ciufolini and coworkers in the gravitational field of the Earth with the geodetic satellites LAGEOS and LAGEOS II tracked with the Satellite Laser Ranging technique.

Highlights

  • At great distances r from a slowly rotating body endowed with proper angular momentum S, it is

  • Concerning the performed analyses, the first tests date back to the mid of 90s [22,23,24,25]; they were conducted in the gravitational field of the Earth with the non-dedicated LAGEOS and LAGEOS II geodynamic satellites3 continuously tracked with the Satellite Laser Ranging (SLR) technique [26] by looking at the nodes of both the satellites and the perigee of LAGEOS II

  • The first global solution, obtained from CHAMP, dates back to 2001 [56]. Both the previous ones and all those of the CHAMP/GRACE/GOCE era are publicly available on the Internet at the official website of the International Centre for Global Earth Models (ICGEM), http://icgem.gfz-potsdam.de/ICGEM/

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Summary

Introduction

X i c h0i,k h0k,i x k ,i 1, 2,3. where dots denote time derivatives, and c is the speed of light in vacuum. Concerning the performed analyses, the first tests date back to the mid of 90s [22,23,24,25]; they were conducted in the gravitational field of the Earth with the non-dedicated LAGEOS and LAGEOS II geodynamic satellites continuously tracked with the Satellite Laser Ranging (SLR) technique [26] by looking at the nodes of both the satellites and the perigee of LAGEOS II Such attempts are still ongoing [27,28,29,30,31,32] by retaining only the nodes of LAGEOS and LAGEOS II.

Do Really Independent Tests of Frame-Dragging Exist?
The Schiff Effect and the GP-B Experiment
The LAGEOS-Based Tests
New Global Earth’s Gravity Field Solutions
A Different Approach in Processing the LAGEOS Data
The Cancelation of the First Even Zonal Harmonic of the Geopotential
The Bias Due to the Other Even Zonal Harmonics of Higher Degree
Findings
Summary and Conclusions
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