An underground Sagnac gyroscope with sub-prad/s rotation rate sensitivity: toward General Relativity tests on Earth
Instrumentation and Methods for Astrophysics
2020-09-23 v1 General Relativity and Quantum Cosmology
Abstract
Measuring in a single location on Earth its angular rotation rate with respect to the celestial frame, with a sensitivity enabling access to the tiny Lense-Thirring effect is an extremely challenging task. GINGERINO is a large frame ring laser gyroscope, operating free running and unattended inside the underground laboratory of the Gran Sasso, Italy. The main geodetic signals, i.e., Annual and Chandler wobbles, daily polar motion and Length of the Day, are recovered from GINGERINO data using standard linear regression methods, demonstrating a sensitivity better than 1 prad/s, therefore close to the requirements for an Earth-based Lense-Thirring test.
Keywords
Cite
@article{arxiv.2003.11819,
title = {An underground Sagnac gyroscope with sub-prad/s rotation rate sensitivity: toward General Relativity tests on Earth},
author = {Angela D. V. Di Virgilio and Filippo Bosi and Umberto Giacomelli and Andrea Simonelli and Giuseppe Terreni and Andrea Basti and Nicolo' Beverini and Giorgio Carelli and Donatella Ciampini and Francesco Fuso and Enrico Maccioni and Paolo Marsili and Antonello Ortolan and Alberto Porzio},
journal= {arXiv preprint arXiv:2003.11819},
year = {2020}
}
Comments
7 pages, 5 figures