Spacetime, spin and Gravity Probe B

被引:9
|
作者
Overduin, J. M.
机构
[1] Towson Univ, Dept Phys Astron & Geosci, Towson, MD 21252 USA
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
关键词
gravitational tests; alternative theories of gravity; gravitoelectro-magnetism; geodetic precession; frame-dragging; GENERAL-RELATIVITY; ROTATIONAL PERTURBATIONS; ACCRETION DISKS; SIMULATIONS; MOTION; PRECESSION; MODELS; TESTS; TIME;
D O I
10.1088/0264-9381/32/22/224003
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
It is more important than ever to push experimental tests of gravitational theory to the limits of existing technology in both range and sensitivity. This brief review focuses on spin-based tests of general relativity and their implications for alternative, mostly non-metric theories of gravity motivated by the challenge of unification with the standard model of particle physics. The successful detection of geodetic precession and frame-dragging by Gravity Probe B places new constraints on a number of these theories, and increases our confidence in the theoretical mechanisms underpinning current ideas in astrophysics and cosmology.
引用
收藏
页数:11
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