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In the realm of the Hubble tension-a review of solutions
Riess, Adam G.; Di Valentino, Eleonora; Melchiorri, Alessandro +6 more
The simplest ΛCDM model provides a good fit to a large span of cosmological data but harbors large areas of phenomenology and ignorance. With the improvement of the number and the accuracy of observations, discrepancies among key cosmological parameters of the model have emerged. The most statistically significant tension is the 4σ to 6σ disagreem…
The BepiColombo solar conjunction experiments revisited
Cappuccio, Paolo; di Stefano, Ivan; Iess, Luciano
BepiColombo ESA/JAXA mission is currently in its 7 year cruise phase towards Mercury. The Mercury orbiter radioscience experiment (MORE), one of the 16 experiments of the mission, will start its scientific investigation during the superior solar conjunction (SSC) in March 2021 with a test of general relativity (GR). Other solar conjunctions will f…
Low-energy electromagnetic processes affecting free-falling test-mass charging for LISA and future space interferometers
Grimani, Catia; Villani, Mattia; Fabi, Michele +1 more
Galactic cosmic rays and solar energetic particles charge gold-platinum, free-falling test masses (TMs) on board interferometers for the detection of gravitational waves in space. The charging process induces spurious forces on the test masses that affect the sensitivity of these instruments mainly below 10-3 Hz. Geant4 and FLUKA Monte …
Comparison of light-time formulations in the post-Newtonian framework for the BepiColombo MORE experiment
Cappuccio, Paolo; di Stefano, Ivan; Cascioli, Gael +1 more
The ESA/JAXA BepiColombo mission, launched on 20 October 2018, is currently in cruise toward Mercury. The Mercury Orbiter Radio-science Experiment (MORE), one of the 16 experiments of the mission, will exploit range and range-rate measurements collected during superior solar conjunctions to better constrain the post-Newtonian parameter γ. The MORE…