Crab north jet
Forbidden optical emission lines
Radio
km/s expansion
B field aligned with Jet
Figure 24: The north Jet of the Crab nebula as seen on forbidden oxygen
lines and radio (contours)
Crab inner jets
X-ray jet and counter jet
Optical continuum counter jet
NOT radio
Also X-ray torus
Vela and B1509-58
Non thermal X-ray jets
All these objects may be jets
But it is not certain that they are