  A Chandra study of pulsar wind nebula around the young energetic pulsar PSR
B1509-58 is presented. The high resolution X-ray image with total exposure time
of 190 ks reveals a ring like feature 10'' apart from the pulsar. This feature
is analogous to the inner ring seen in the Crab nebula and thus may correspond
to a wind termination shock. The shock radius enables us to constrain the wind
magnetization, sigma>= 0.01. The obtained sigma is one order of magnitude
larger than that of the Crab nebula. In the pulsar vicinity, the southern jet
appears to extend beyond the wind termination shock, in contrast to the narrow
jet of the Crab. The revealed morphology of the broad jet is coincident with
the recently proposed theoretical model in which a magnetic hoop stress diverts
and squeezes the post-shock equatorial flow towards the poloidal direction
generating a jet.
