Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Barry Muhlfelder"'
Autor:
C. W. F. Everitt, D. Hipkins, Thomas J. Holmes, Jie Li, M. I. Heifetz, J. M. Lockhart, Sasha Buchman, Barry Muhlfelder, D.B. DeBra, John A. Lipa, M. Dolphin, Y. Ohshima, M. Taber, M. Adams, V G Solomonik, John Mester, P W Worden, J. Kolodziejczak, S. Wang, William J. Bencze, B. Clarke, A. Silbergleit, G. M. Keiser, J. P. Turneaure, M. Salomon, K. Stahl, John Conklin, Bradford W. Parkinson
Publikováno v:
Space Science Reviews. 148:53-69
This is the first of five connected papers detailing progress on the Gravity Probe B (GP-B) Relativity Mission. GP-B, launched 20 April 2004, is a landmark physics experiment in space to test two fundamental predictions of Einstein’s general relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dbd7be1816211a6a43e0355a083e8e6
https://doi.org/10.1007/s11214-009-9524-7
https://doi.org/10.1007/s11214-009-9524-7
Autor:
G. M. Keiser, B. Clarke, J.M. Lockhart, P. Worden, Barry Muhlfelder, J. Kolodziejczak, J. Li, M. Adams
Publikováno v:
Space Science Reviews. 148:429-439
We have evaluated the systematic error in the GP-B experiment using five different approaches and estimated the individual contributions of many error sources. The systematic effects we consider include those due to gyroscope torques, gyroscope reado
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6803efff32a7567c4f77158a6bdddcb
https://doi.org/10.1007/s11214-009-9523-8
https://doi.org/10.1007/s11214-009-9523-8
Autor:
William J. Bencze, Sasha Buchman, C. W. F. Everitt, Bradford W. Parkinson, D.B. DeBra, Jie Li, M. Taber, Barry Muhlfelder, M. I. Heifetz, S. Wang, G. M. Keiser, J. P. Turneaure, G. Green, Alexander S. Silbergleit, John A. Lipa, B. Clarke, D. N. Hipkins
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 166:147-152
The Gravity Probe B experiment was developed to test two predictions of General Relativity; the Geodetic and the frame-dragging precessions of a mechanical gyroscope due to the gravitational field of the Earth. This space-based, cryogenic experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e7a185795f9943be6102e2208e613ed
https://doi.org/10.1016/j.nuclphysbps.2006.12.090
https://doi.org/10.1016/j.nuclphysbps.2006.12.090
Autor:
D.B. DeBra, C. W. F. Everitt, R. Torii, P W Worden, B. Foulon, J. M. Lockhart, C.M. Pegrum, A. M. Cruise, N. A. Lockerbie, F. Loeffler, John A. Lipa, Clive C. Speake, H. Dittus, W. Vodel, Sasha Buchman, Barry Muhlfelder, Pierre Touboul, T. J. Sumner, John Mester, G. M. Keiser, Bradford W. Parkinson, M. Sandford, B. J. Kent, J. P. Turneaure, Stefano Vitale, M. Taber
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 134:147-154
We describe two space based gravitational physics experiments, the Gravity Probe B Relativity Mission (GPB) and the Satellite Test of the Equivalence Principle (STEP). GP-B will perform precision tests of two independent predictions of general relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::157ab7fcd41c6ab3cf71476e3bdd355e
https://doi.org/10.1016/j.nuclphysbps.2004.08.024
https://doi.org/10.1016/j.nuclphysbps.2004.08.024
Publikováno v:
Advances in Space Research. 32:1397-1400
We describe the superconducting gyroscope readout system to be used for measuring to a precision of 1 marcsecond in 10 hours of integration time the spin axis orientation of the Gravity Probe B (GP-B) gyroscope. The cryogenic portion of the readout s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8eba98e77e7675fd140671226596e6e9
https://doi.org/10.1016/s0273-1177(03)90352-8
https://doi.org/10.1016/s0273-1177(03)90352-8
Autor:
M. Taber, Barry Muhlfelder, Gregory M. Gutt, J. M. Lockhart, D.O. Murray, D.B. DeBra, G. M. Keiser, D. Bardas, J. P. Turneaure, R. A. van Patten, John Mester, Y. M. Xiao, Sasha Buchman, C. W. F. Everitt, B. W. Parkinson
Publikováno v:
Advances in Space Research. 32:1417-1420
Most of the Flight Payload hardware for the Gravity Probe B Relativity Mission is currently being manufactured. The design, fabrication, and integration of this hardware has already been subjected to an extensive program of full scale prototyping and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::154a1bbc2abd062f98acf4888150a2ee
https://doi.org/10.1016/s0273-1177(03)90355-3
https://doi.org/10.1016/s0273-1177(03)90355-3
Autor:
M. I. Heifetz, Y. M. Xiao, J. P. Turneaure, M. Taber, B. W. Parkinson, R. A. van Patten, J. Grammer, John A. Lipa, H. Dougherty, R.T. Parmley, N. J. Kasdin, D. Bardas, John Mester, G. M. Keiser, Barry Muhlfelder, Alexander S. Silbergleit, J. M. Lockhart, Dz-Hung Gwo, Gregory M. Gutt, M.T. Sullivan, R. H. Vassar, D. Gill, G. Green, P. Zhou, Sasha Buchman, D.B. DeBra, C. W. F. Everitt, S. Wang
Publikováno v:
Advances in Space Research. 32:1387-1396
Gravity Probe B is an experiment to measure the geodetic and frame-dragging precessions, relative to the “fixed” “stars”, of a gyroscope placed in a 650 km altitude polar orbit about the earth. For Einstein's general relativity, the precessio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56213d82cc25e7e72812040e198d4581
https://doi.org/10.1016/s0273-1177(03)90351-6
https://doi.org/10.1016/s0273-1177(03)90351-6
Publikováno v:
Advances in Space Research. 25:1185-1188
We describe the generation of an ultralow magnetic field of −11 Tesla in the flight dewar of the Gravity Probe B Relativity Mission. The field was achieved using expanded-superconducting-shield techniques and is maintained with the aid of a magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb23b63b7771b84a0ccad4d3bc1c6515
https://doi.org/10.1016/s0273-1177(99)00984-9
https://doi.org/10.1016/s0273-1177(99)00984-9
Autor:
D. Bardas, Gregory M. Gutt, D. Gill, Y. M. Xiao, Robert W. Brumley, J. P. Turneaure, G. M. Keiser, M. Taber, Barry Muhlfelder, John A. Lipa, John Mester, D. H. Gwo, Saps Buchman, C. W. F. Everitt, William J. Bencze, P. Zhou, D.B. DeBra, Bradford W. Parkinson, J.M. Lockhart, S. Wang
Publikováno v:
Advances in Space Research. 25:1177-1180
The NASA/Stanford Relativity Mission Gravity Probe B (GP-B) experiment will provide two extremely precise tests of General Relativity based on observations of electrically suspended gyroscopes in a satellite in a 650 km circular polar orbit around th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494989a822ef937af8c5c97062defa10
https://doi.org/10.1016/s0273-1177(99)00982-5
https://doi.org/10.1016/s0273-1177(99)00982-5
Autor:
G.R. Smith, R.C. Clappier, M. Luo, Gregory M. Gutt, T.R. McGinnis, J. M. Lockhart, Barry Muhlfelder
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 7:2534-2537
We have optimized a sensitive SQUID measurement system for use in a space flight experiment in the presence of significant interference from other sub-systems and the perturbing effects of EMI and thermal fluctuations. We will describe developments i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99becedff843e7f5d48aeb5141e28a52
https://doi.org/10.1109/77.621755
https://doi.org/10.1109/77.621755