TESTING LOCAL LORENTZ INVARIANCE OF GRAVITY WITH BINARY-PULSAR DATA

被引:41
作者
DAMOUR, T
ESPOSITOFARESE, G
机构
[1] OBSERV PARIS,DEPT ASTROPHYS RELATIVISTE & COSMOL,CNRS,F-92195 MEUDON,FRANCE
[2] CTR PHYS THEOR,CNRS,F-13288 MARSEILLE 9,FRANCE
来源
PHYSICAL REVIEW D | 1992年 / 46卷 / 10期
关键词
D O I
10.1103/PhysRevD.46.4128
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
As gravity is a long-range force, one might a priori expect the Universe's global matter distribution to select a preferred rest frame for local gravitational physics. Two parameters alpha1 and alpha2 suffice to describe the phenomenology of preferred-frame effects in post-Newtonian gravity. One of them has already been very tightly constrained (\alpha2\ < 2.4 x 10(-7)). We show here that binary-pulsar data provide a bound on the other one (\alpha1\ < 5.0 x 10(-4) 90% C.L.) which is quantitatively comparable to previous solar-system limits, but qualitatively more powerful because it is derived for systems comprising strong-gravitational-field regions. Our results correct a previous claim that alpha1 could be very tightly constrained via a purported semisecular effect in the orbital period of binary pulsars.
引用
收藏
页码:4128 / 4132
页数:5
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