An exact static two-mass solution using Nariai spacetime
  We show the existence of static, spherically symmetric spacetimes containing two stars of incompressible matter, possibly oppositely charged. The stars are held apart by the negative pressure of a positive cosmological constant but there is no cosmological horizon separating them. The spacetime between the stars is given by the Nariai solution, or a slight generalisation thereof in the charged case. 
Michael Fennen and Domenico Giulini
gr-qc math-ph math.MP