Search results for "gravitational time dilation"

showing 3 items of 3 documents

The relativity experiment of MORE: Global full-cycle simulation and results

2015

BepiColombo is a joint ESA/JAXA mission to Mercury with challenging objectives regarding geophysics, geodesy and fundamental physics. In particular, the Mercury Orbiter Radio science Experiment (MORE) intends, as one of its goals, to perform a test of General Relativity. This can be done by measuring and constraining the parametrized post-Newtonian (PPN) parameters to an accuracy significantly better than current one. In this work we perform a global numerical full-cycle simulation of the BepiColombo Radio Science Experiments (RSE) in a realistic scenario, focussing on the relativity experiment, solving simultaneously for all the parameters of interest for RSE in a global least squares fit …

Gravitational time dilationPhysicsGeneral RelativityGeneral relativityBepi-Colombo; General Relativity; Mercury; Radio Science; Aerospace Engineering; Civil and Structural Engineering; InstrumentationBepiColomboAerospace EngineeringMercuryRadio ScienceBepi-ColomboNumerical relativityTheory of relativityClassical mechanicsTests of general relativityTwo-body problem in general relativityStatistical physicsPreferred frameTests of special relativitySettore MAT/07 - Fisica MatematicaInstrumentationCivil and Structural Engineering
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Shock capturing methods in 1D numerical relativity

2008

A numerical code is presented which uses modern shock capturing methods to evolve spherically symmetric perfect fluid space-times. Harmonic slicing is used to ensure singularity avoidance, which is crucial in strong field situations. Some tests are presented, including an application to the stellar collapse problem.

PhysicsGravitational time dilationNumerical relativityClassical mechanicsTheory of relativityShock capturing methodRelativistic mechanicsPerfect fluidMechanicsIntroduction to the mathematics of general relativityTheoretical motivation for general relativityComputingMethodologies_COMPUTERGRAPHICS
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Twin paradox in curved spacetime

2022

The twin paradox has played an important role in the history of special relativity (SR). A precise calculation would require the application of the general theory of relativity (GR) but, neglecting the acceleration phases of the traveling twin, even in SR it is possible to find the correct solution without logical contradictions. Nowadays it is well known that the twin thought experiment seems a paradox as a consequence of a naive application of time dilation and the principle of relativity. The twin who goes on space travel is the one who, returning to the twin at rest, finds the aged brother. Continuing in this pedagogical tradition, we want to add a further consideration. In fact, the ex…

Twin paradoxgeneral relativityGeneral Physics and Astronomygravitational time dilationEducation
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