TEST OF PARAMETRIZED POST-NEWTONIAN GRAVITY WITH GALAXY-SCALE STRONG LENSING SYSTEMS

Parametrized post-Newtonian expansion of Chern-Simons gravity

Galaxy-scale Strong-lensing Tests of Gravity and Geometric Cosmology: Constraints and Systematic Limitations

Galaxy-scale strong gravitational lenses with measured stellar velocity dispersions allow a test of the weak-field metric on kiloparsec scales and a geometric measurement of the cosmological distance–redshift relation, provided that the mass-dynamical structure of the lensing galaxies can be independently constrained to a sufficient degree. We combine data on 53 galaxy-scale strong lenses from ...

Galaxy-scale Strong Lensing Tests of Gravity and Geometric Cosmology: Constraints and Systematic Limitations1

Galaxy-scale strong gravitational lenses with measured stellar velocity dispersions allow a test of the weakfield metric on kiloparsec scales and a geometric measurement of the cosmological distance–redshift relation, provided that the mass-dynamical structure of the lensing galaxies can be indepently constrained to a sufficient degree. We combine data on 53 galaxy-scale strong lenses from the ...

New post-Newtonian parameter to test Chern-Simons gravity.

We study Chern-Simons (CS) gravity in the parametrized post-Newtonian (PPN) framework through a weak-field solution of the modified field equations. We find that CS gravity possesses the same PPN parameters as general relativity, except for the inclusion of a new term, proportional to the CS coupling and the curl of the PPN vector potential. This new term leads to a modification of frame draggi...

Weak Lensing of Galaxy Clusters in Modified Newtonian Dynamics

We study weak gravitational lensing of galaxy clusters in terms of the MOND (modified Newtonian dynamics) theory. We calculate shears and convergences of background galaxies for three clusters (A1689, CL 0024+1654, and CL 1358+6245) and the mean profile of 42 SDSS (Sloan Digital Sky Survey) clusters and compare them with observational data. The mass profile is modeled as a sum of X-ray gas, gal...