New upper limits on deviation from the inverse-square law of gravity in the solar system: a Yukawa parameterization

作者：Li Zi Wei^*; Yuan Sheng Feng; Lu Chang; Xie Yi

来源：Research in Astronomy and Astrophysics, 2014, 14(2): 139-143.

DOI：10.1088/1674-4527/14/2/002

• gravitation
• ephemerides
• celestial mechanics

New physics beyond the standard model of particles might cause deviation from the inverse-square law of gravity. In many theoretical models of modified gravity, it is parameterized by the Yukawa correction to the Newtonian gravitational force in terms of two parameters alpha and lambda. Here alpha is a dimensionless strength parameter and lambda, is a length scale. Using the supplementary advances in perihelia provided by INPOP10a and EPM2011 ephemerides, we obtain new upper limits on the deviation from the inverse-square law when the uncertainty of the Sun's quadrupole moment is taken into account. We find that INPOP10a yields the upper limits as alpha - 3.1 x 10(-11) and lambda = 0.15 au, and EPM2011 gives alpha = 5.2 x 10(-11) and lambda = 0.21 au. In both of them, alpha is at least 10 times less than the previous results.

• 出版日期2014-2
• 单位南京大学