Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Y. Jafry"'
Autor:
B. Foulon, F. Loeffler, B. J. Kent, N. A. Lockerbie, J. P. Blaser, A. Scheicher, Clive C. Speake, R. Reinhardt, Pierre Touboul, Stefano Vitale, R. Torii, John Mester, A. M. Cruise, Hansjörg Dittus, G. Mann, T. J. Sumner, John D. Anderson, W. Vodel, Y. Jafry, M. Sandford, C.M. Pegrum, C. W. F. Everitt, Stephan Theil, Thibault Damour, P W Worden
Publikováno v:
Advances in Space Research. 39:254-258
STEP is one of a number of missions now being developed to take advantage of the quiet space environment to carry out very sensitive gravitational experiments. Using pairs of concentric free-falling proof-masses, STEP will be able to test the equival
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::517794259db0a0fb268adc36b2dfb586
https://doi.org/10.1016/j.asr.2006.09.019
https://doi.org/10.1016/j.asr.2006.09.019
Autor:
Y. Jafry
Publikováno v:
Advances in Space Research. 32:1271-1275
Electrostatic charging of the LISA proof masses by penetrating cosmic rays and energetic solar particles in interplanetary space leads to two kinds of spurious forces: i) Lorentz interaction due to the motion of the charged proof masses through the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74dfb2573a521321e3affa290ace8186
https://doi.org/10.1016/s0273-1177(03)90331-0
https://doi.org/10.1016/s0273-1177(03)90331-0
Autor:
Y. Jafry
Publikováno v:
Advances in Space Research. 32:1383-1386
The MiniSTEP drag-free control system must reduce the atmospheric drag forces acting on the spacecraft by seven orders of magnitude, to yield an average residual acceleration of less than 3·10 −14 m s −2 averaged over the measurement bandwidth.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a63a2295bfbffc53bbdad7276cf3c27e
https://doi.org/10.1016/s0273-1177(03)90350-4
https://doi.org/10.1016/s0273-1177(03)90350-4
Autor:
Y. Jafry, R. Reinhard
Publikováno v:
Advances in Space Research. 32:1351-1356
Experiments to test the Equivalence Principle in space are typically suggested for flight in low-Earth, circular, Sun-synchronous orbits at 400–600 km altitude. In these orbits the spacecraft routinely traverses the South Atlantic Anomaly (SAA), wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47de2bffe3102cd97815827c3eaf943d
https://doi.org/10.1016/s0273-1177(03)90344-9
https://doi.org/10.1016/s0273-1177(03)90344-9
Autor:
T. J. Sumner, Y. Jafry
Publikováno v:
Advances in Space Research. 25:1219-1223
A limiting disturbance that affects high-precision weak-force experiments in space using proof-masses, such as MiniSTEP (MINImal Satellite Test of the Equivalence Principle) and LISA (Laser Interferometer Space Antenna), is due to charging of the pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88b31bd13ea8911c7e9cc75504c5b859
https://doi.org/10.1016/s0273-1177(99)00991-6
https://doi.org/10.1016/s0273-1177(99)00991-6
Autor:
Y Jafry
Publikováno v:
Classical and Quantum Gravity. 15:1-12
Various proposed space experiments to test the weak equivalence principle (EP) use ultra-precise differential accelerometers in Earth orbit. A common feature of these accelerometers is that their test masses are physically constrained in some manner,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e64f90b7da482db8efa46f40f84b112b
https://doi.org/10.1088/0264-9381/15/1/002
https://doi.org/10.1088/0264-9381/15/1/002
Autor:
Y. Jafry, T. J. Sumner
Publikováno v:
Classical and Quantum Gravity. 14:1567-1574
The build-up of electrical charge on the proof masses is an important disturbance for LISA. The charging is due to penetrating particle radiation (primarily protons) from cosmic rays, and from the Sun during solar flares. Estimates of charging rates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::986214fbadf9d91c386d5b52cdc731b0
https://doi.org/10.1088/0264-9381/14/6/028
https://doi.org/10.1088/0264-9381/14/6/028
Autor:
Y Jafry
Publikováno v:
Classical and Quantum Gravity. 13:A179-A184
The MiniSTEP drag-free control system must reduce the atmospheric drag forces acting on the spacecraft by seven orders of magnitude, to yield an average residual acceleration of less than averaged over the measurement bandwidth. The origins of the dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eed6e5829628c0de91dc8da04f517844
https://doi.org/10.1088/0264-9381/13/11a/025
https://doi.org/10.1088/0264-9381/13/11a/025
Publikováno v:
Classical and Quantum Gravity. 13:A97-A106
Space-borne physics experiments involving the measurement of small motions of test bodies are likely to be limited by disturbance forces. Of particular concern are forces arising from electrostatic charging of the test body due to interactions with p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b69c35058117be645c38e332eb1f7885
https://doi.org/10.1088/0264-9381/13/11a/013
https://doi.org/10.1088/0264-9381/13/11a/013
Publikováno v:
IFAC Proceedings Volumes. 25:241-244
Gravity Probe-B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity. The experiment will check, very precisely, tin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48709921375f378c225cc00ce4bdf0d8
https://doi.org/10.1016/s1474-6670(17)49656-x
https://doi.org/10.1016/s1474-6670(17)49656-x