Simulations of Solar System observations in alternative theories of gravity

TL;DR

This paper presents simulations of radioscience signals in alternative gravity theories to assess how deviations from General Relativity could be detected with space missions like Cassini.

Contribution

It introduces a software tool for simulating radioscience observables in various alternative gravity theories, enabling testing of these theories against observational data.

Findings

Simulations show potential signatures of alternative theories in radioscience signals.

The software can estimate the magnitude of deviations from General Relativity.

Application to Cassini data demonstrates the method's practical utility.

Abstract

In this communication, we focus on the possibility to test General Relativity (GR) with radioscience experiments. We present simulations of observables performed in alternative theories of gravity using a software that simulates Range/Doppler signals directly from the space time metric. This software allows one to get the order of magnitude and the signature of the modifications induced by an alternative theory of gravity on radioscience signals. As examples, we present some simulations for the Cassini mission in Post-Einsteinian gravity (PEG) and with Standard Model Extension (SME).