Interferometric Parallax: a New Tool for Measuring Distances and Speeds
John Ralston (University of Kansas)

A new method has been found for measuring the distances to astronomical 
objects and their transverse proper velocities. The previously overlooked 
phenomenon of (interferometric parallax) identifies a component of 2- and 
4-point amplitude and the intensity correlations that can be observed at 
frequencies ranging from radio to optical. Calculations hinge on terms 
conventionally neglected in the Van Cittert-Zernicke theorem.  Possibilities 
for "proof of principle" test experiments are considered.  An independent 
distance ladder based directly on experimental measurements might be created 
from planetary to cosmological scales.