The authors would like to thank R.Juszkiewicz, A.Kocharyan and R.Ruffini for valuable discussions of the results. One of us (V.G.) is thankful to R.Penrose for the discussion of the geometrical aspect of the effect of geodesics mixing. This research is in part funded by COLCIENCIAS of Colombia (2228-05-091-95) and The Royal Society. The COBE datasets were developed by the NASA Goddard Space flight Center under the guidance of the COBE Science Working Group and were provided by the NSSDC.
© European Southern Observatory (ESO) 1997
Online publication: June 30, 1998