Gravity Probe B: final results of a space experiment to test general relativity.

By C. Everitt, D. DeBra, Bradford W. Parkinson, J. Turneaure, J. Conklin, M. Heifetz, G. Keiser, A. Silbergleit, T. Holmes, J. Kolodziejczak and 17 more. Physical Review Letters, 2011

848 citations recorded by the source corpus.

Gravity Probe B, launched 20 April 2004, is a space experiment testing two fundamental predictions of Einstein's theory of general relativity (GR), the geodetic and frame-dragging effects, by means of cryogenic gyroscopes in Earth orbit. Data collection started 28 August 2004 and ended 14 August 2005. Analysis of the data from all four gyroscopes results in a geodetic drift rate of -6601.8±18.3  mas/yr and a frame-dragging drift rate of -37.2±7.2  mas/yr, to be compared with the GR predictions of -6606.1  mas/yr and -39.2  mas/yr, respectively ("mas" is milliarcsecond; 1  mas=4.848×10(-9)  rad).

Subfields: Artificial Intelligence, Oceanography, Statistical and Nonlinear Physics

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In Artificial Intelligence

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1. Kent Yagi
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Citations in the corpus

• Precession of Mercury’s Perihelion from Ranging to the MESSENGER Spacecraft (2017, neutral): “(Everitt et al. 2011).”
• General Relativity and Cosmology: Unsolved Questions and Future Directions (2016, background): “Lense-Thirring precession Gravity Probe B [486] LARASE [495] Confirmed LARES [420,421,496] Laboratory tests [497] Solar System bodies [339] Binary pulsars [420,421] Black holes [478,496,498,499]”
• gevolution: a cosmological N-body code based on General Relativity (2016, background): “[29, 30]), and a direct observation of gravitational waves has only recently been achieved [31] as the result of a remarkable technological feat.”
• Modified Gravity and Cosmology (2011, background): “The current accuracy of results from this mission are at the level of ∼ 15% [476], although this could improve further after additional analysis is performed.”
• Approximate Universal Relations for Neutron Stars and Quark Stars (2016, background): “The current most stringent constraints on dCS gravity come from Solar System observations of framedragging with LAGEOS [289] and Gravity Probe B [290, 291] and from table top experiments [292].”
• Microarcsecond Radio Astrometry (2013, methodology): “Based on the data from the four gyroscopes spanning ∼ 1 year, Everitt et al. (2011) reported a geodetic drift at −6601.8 ± 18.3 mas y−1 and a frame-dragging drift at −37.2 ± 7.2 mas y−1.”
• Testing Relativistic Gravity with Radio Pulsars (2014, methodology): “ation (5)), one nds A B=G= 1:90 0:22 ; (41) which agrees with the GR value A B=G= 2. Although the geodetic precession of a gyroscope was conrmed to better than 0.3% by the Gravity Probe B experiment [14], the clearly less precise test with Double Pulsar B(13%) for the rst time gives a good measureme”