1998A&A...335..539P

We present results of two-epoch intercontinental VLBI observations at 6 cm wavelength of LSI+61 303 during an outburst in 1993. In the first epoch, the total flux density of LSI+61 303 varied from 76 to 131mJy and the derived size of the emitting region was about 3mas. In the second epoch, four days later, the flux density of LSI+61 303 was very stable, at a level of 60mJy. The flux stability along all the second session allowed us to carry out standard hybrid mapping. The VLBI map obtained exhibits an extended structure of about 7mas with an unresolved component at the center of the extended structure. The results derived from both observing sessions seem to agree with a source expanding with time from 2-3 to 7mas, at a velocity of ∼2200km/s. In addition, our results suggest the existence of a quiescent component associated with the core.