Radioscience simulations in General Relativity and in alternative theories of gravity

TL;DR

This paper introduces a new software tool for simulating radioscience signals in General Relativity and alternative gravity theories, enabling tests of these theories through space mission data analysis.

Contribution

The paper presents a novel software that simulates radioscience signals directly from spacetime metrics and assesses modifications from alternative gravity theories.

Findings

Simulations for Cassini mission in Post-Einsteinian gravity

Simulations with MOND External Field Effect

Software estimates the magnitude of gravity modifications

Abstract

In this communication, we focus on the possibility to test GR with radioscience experiments. We present a new software that in a first step simulates the Range/Doppler signals directly from the space time metric (thus in GR and in alternative theories of gravity). In a second step, a least-squares fit of the involved parameters is performed in GR. 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 and with the MOND External Field Effect.