Preliminary results of a search for the variation of the solar granulation properties with the heliographic laitude are presented. Within errors, no changes are found in the power spectra and sizes between N-S and E-W scans.
((Introduction) We present the first results of a statistical study on the milliarcsec structure in a complete sample of active radio galaxies. Many works have been published on properties of VLBI cores in quasars, but no similar studies have been carried on for galaxies.
We adopted a 2-stage strategy for the observations. As a first step, we took a snapshot of all the selected sources, in,order to have an indication on the size and flux of the milliarcsecond component. We present here these first observations. As a second stage, we pian to map with better sensitivity and u-v coverage all the detected sources.