The stellar winds of the central stars of planetary nebulae play an essential role in the shaping of\nplanetary nebulae. In the interacting stellar winds model, the fast stellar wind injects energy and\nmomentum, which are transferred to the nebular envelope through an X-ray-emitting hot bubble.\nTogether with other physical processes, such as the ionization of the nebular envelope, the asymmetrical\nmass-loss in the asymptotic giant branch (AGB), and the action of collimated outflows and magnetic\nfields, the pressurized hot gas determines the expansion and evolution of planetary nebulae. Chandra and\nXMM-Newton have provided us with detailed information of this hot gas. Here in this talk I will review\nour current understanding of the effects of the fast stellar wind in the shaping and evolution of planetary\nnebulae and give some hints of the promising future of this research.
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