A quick test of the WEP enabled by a sounding rocket

被引:13
作者
Reasenberg, Robert D. [1 ]
Lorenzini, Enrico C. [2 ]
Patla, Biju R. [1 ]
Phillips, James D. [1 ]
Popescu, Eugeniu E. [1 ]
Rocco, Emanuele [1 ]
Thapa, Rajesh [1 ]
机构
[1] Harvard Smithsonian Ctr Astrophys, Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
[2] Univ Padua, Fac Engn, I-35122 Padua, Italy
关键词
EQUIVALENCE PRINCIPLE; STEP; SATELLITE;
D O I
10.1088/0264-9381/28/9/094014
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We describe SR-POEM, a Galilean test of the weak equivalence principle (WEP), which is to be conducted during the free fall portion of a sounding rocket flight. This test of a single pair of substances is aimed at a measurement uncertainty of sigma(eta) < 10(-16) after averaging the results of eight separate drops, each of 40 s duration. The WEP measurement is made with a set of four laser gauges that are expected to achieve 0.1 pm Hz(-1/2). We address the two sources of systematic error that are currently of greatest concern: magnetic force and electrostatic (patch effect) force on the test mass assemblies. The discovery of a violation (eta not equal 0) would have profound implications for physics, astrophysics and cosmology.
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页数:11
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