The microscope mission

Touboul, Pierre; Foulon, Bernard; Lafargue, Laurent; Métris, Gilles

doi:10.1016/s0094-5765(01)00188-6

Cited by 34 publications

(10 citation statements)

References 11 publications

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“…Dessa forma, é esperado que β 1, o que justifica a aproximação dada na Eq. (27). Com essa estimativa, pode-se obter a projeção da aceleração centrífuga e do campo gravitacional nos eixos x e z,…”

Section: Balança De Torçãounclassified

“…Para o aprimoramento das medições do Princípio de Equivalência, uma das ideias consiste em se testar a universalidade da queda livre no espaço. Um experimento já em andamento e com resultados promissores é o MICROSCOPE que, mesmo com resultados parciais, já conseguiu verificar a validade do Princípio de Equivalência com precisão superior às medições realizadas na superfície terrestre [21,[25][26][27][28].…”

Section: Introductionunclassified

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O Princípio de Equivalência

Acevedo

Morais

Pimentel

2019

Rev. Bras. Ensino Fís.

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Resumo Revisamos a base conceitual sobre o Princípio de Equivalência, elucidando seu papel crucial na formulação das teorias gravitacionais. Analisamos as consequências diretas do princípio, reinterpretando de modo relativisticamente coerente a forma como deve ser considerado na dedução do redshift gravitacional via utilização do efeito Doppler relativístico, ponto que foi negligenciado por Einstein. Os experimentos mais importantes já realizados a procura por violações da equivalência entre massa gravitacional e massa inercial são comentados, analisando seus princípios de funcionamento e os resultados obtidos.

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Section: Balança De Torçãounclassified

Section: Introductionunclassified

O Princípio de Equivalência

Acevedo

Morais

Pimentel

2019

Rev. Bras. Ensino Fís.

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“…where is the total mission lifetime and is the degradation rate scaling factor. The begin-of-life (BOL) and end-of-life (EOL) properties as given by the MICROSCOPE mission definition [16][17][18] are listed in Table 2. Note that the specified values for BOL/EOL values of specular and diffuse reflectivity are modeled values since no actual data on their properties is available.…”

Section: Degradation Influencementioning

confidence: 99%

Modelling of Solar Radiation Pressure Effects: Parameter Analysis for the MICROSCOPE Mission

List

Bremer

Rievers

et al. 2015

International Journal of Aerospace Engineering

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Modern scientific space missions pose high requirements on the accuracy of the prediction and the analysis of satellite motion. On the one hand, accurate orbit propagation models are needed for the design and the preparation of a mission. On the other hand, these models are needed for the mission data analysis itself, thus allowing for the identification of unexpected disturbances, couplings, and noises which may affect the scientific signals. We present a numerical approach for Solar Radiation Pressure modelling, which is one of the main contributors for nongravitational disturbances for Earth orbiting satellites. The here introduced modelling approach allows for the inclusion of detailed spacecraft geometries, optical surface properties, and the variation of these optical surface properties (material degradation) during the mission lifetime. By using the geometry definition, surface property definitions, and mission definition of the French MICROSCOPE mission we highlight the benefit of an accurate Solar Radiation Pressure modelling versus conventional methods such as the Cannonball model or a Wing-Box approach. Our analysis shows that the implementation of a detailed satellite geometry and the consideration of changing surface properties allow for the detection of systematics which are not detectable by conventional models.

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“…Tighter constraints can be pursued by a number of experiments in space that have been proposed, like STEP (Satellite Test of the Equivalence Principle) [14], and GG (Galileo Galilei) [13]), aiming respectively to an accuracy of 10 −18 and 10 −17 . Under development is MICROSCOPE (MICROSatellite à trainée Compensée pour l'Observation du Principe d'Equivalence) [15], whose objective is also an accuracy of 10 −18 ; the mission could fly in 2015-16.…”

Section: The Equivalence Principlementioning

confidence: 99%

Testing general relativity

Tartaglia¹

2015

Proceedings of Gran Sasso Summer Institute 2014 Hands-on Experimental Underground Physics at LNGS — PoS(GSSI14)

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This lecture will present a review of the past and present tests of the General Relativity theory. The essentials of the theory will be recalled and the measurable effects will be listed and analyzed. The main historical confirmations of General Relativity will be described. Then, the present situation will be reviewed presenting a number of examples. The opportunities given by astrophysical and astrometric observations will be shortly discussed. Coming to terrestrial experiments the attention will be specially focused on ringlasers and a dedicated experiment for the Gran Sasso Laboratories, named by the acronym GINGER, will be presented. Mention will also be made of alternatives to the use of light, such as particle beams and superfluid rings.

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The microscope mission

Cited by 34 publications

References 11 publications

O Princípio de Equivalência

O Princípio de Equivalência

Modelling of Solar Radiation Pressure Effects: Parameter Analysis for the MICROSCOPE Mission

Testing general relativity

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