High resolution VSOP image of the southern blazar PKS 1921-293 at 18 cm

We present a preliminary report on the high resolution imaging of the nearby southern blazar PKS 1921-293, observed at 18 cm from the VSOP In-Orbit Checkout. The image shows that the source possesses a core-jet structure similar to that seen with ground-only VLBI observations at centimeter wavelengths. However, the addition of data from HALCA has allowed us to clearly identify the core which we find to be partially resolved with a brightness temperature in excess of 10 12 K. © 2000 COSPAR. Published by Elsevier Science Ltd.