Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Lucchesi, David, Visco, Massimo, Peron, Roberto, Bassan, Massimo, Pucacco, Giuseppe, Pardini, Carmen, Anselmo, Luciano, and Magnafico, Carmelo, 2020. A 1% Measurement of the Gravitomagnetic Field of the Earth with Laser-Tracked Satellites. Universe, 6(9):139, doi:10.3390/universe6090139.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2020Univ....6..139L,
author = {{Lucchesi}, David and {Visco}, Massimo and {Peron}, Roberto and {Bassan}, Massimo and {Pucacco}, Giuseppe and {Pardini}, Carmen and {Anselmo}, Luciano and {Magnafico}, Carmelo},
title = "{A 1\% Measurement of the Gravitomagnetic Field of the Earth with Laser-Tracked Satellites}",
journal = {Universe},
keywords = {gravitomagnetism, Lense-Thirring precession, LAGEOS, time dependent gravity field, GRACE mission},
year = 2020,
month = aug,
volume = {6},
number = {9},
eid = {139},
pages = {139},
abstract = "{A new measurement of the gravitomagnetic field of the Earth is
presented. The measurement has been obtained through the careful
evaluation of the Lense-Thirring (LT) precession on the combined
orbits of three passive geodetic satellites, LAGEOS, LAGEOS II,
and LARES, tracked by the Satellite Laser Ranging (SLR)
technique. This general relativity precession, also known as
frame-dragging, is a manifestation of spacetime curvature
generated by mass-currents, a peculiarity of Einstein's theory
of gravitation. The measurement stands out, compared to previous
measurements in the same context, for its precision
(≃7.4{\texttimes}10‑3, at a 95\% confidence level) and accuracy
(≃16{\texttimes}10‑3), i.e., for a reliable and robust
evaluation of the systematic sources of error due to both
gravitational and non-gravitational perturbations. To achieve
this measurement, we have largely exploited the results of the
GRACE (Gravity Recovery And Climate Experiment) mission in order
to significantly improve the description of the Earth's
gravitational field, also modeling its dependence on time. In
this way, we strongly reduced the systematic errors due to the
uncertainty in the knowledge of the Earth even zonal harmonics
and, at the same time, avoided a possible bias of the final
result and, consequently, of the precision of the measurement,
linked to a non-reliable handling of the unmodeled and
mismodeled periodic effects.}",
doi = {10.3390/universe6090139},
adsurl = {https://ui.adsabs.harvard.edu/abs/2020Univ....6..139L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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