During this period, the electron flow in the beam
continues to push the advancing lobe further away to the left. The energy burst to the
right is slowly catching up with the receding lobe, which is still invisible. The radio
core is often displaced slightly to the left of the binary system at the blue dot. We
believe that the radio core is produced by fast-moving electrons near the accretion disk
and the bottom of the beam. Since the electrons to the left are moving toward us, the
radio emission on this side is much stronger than that to the right of Sco X-1.
Concentrate on the radio core for the next ten frames as it begins to brighten and then
flares a second time. |