Solitons in the Crab Nebula

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39153

Title:	Solitons in the Crab Nebula
Authors:	Chiueh,TH
Contributors:	物理研究所
Date:	1997
Issue Date:	2010-07-08 14:06:35 (UTC+8)
Publisher:	中央大學
Abstract:	High resolution x-ray observations of the Crab Nebula show the existence of a well-defined bright torus. A straightforward estimate suggests the inadequacy of the conventional model for the pulsar-wind terminal shock. A resolution to this difficulty is given in this report; it is proposed that the pulsar-wind shock can only be "thermalized" in a collisionless fashion and hence the shock transition is bound to be broad. A dynamical scenario is given regarding how the shock "thermalization" should proceed, and it employs the excitation of solitons that serve as the energy carriers in transporting the pulsar wind energy afar and depositing the energy when certain conditions in the background plasmas are met. A necessary condition for such an energy-deposition process to occur is that the charateristic wave speed decreases with distance, a condition that can hold in the Crab Nebula.
Relation:	CHINESE JOURNAL OF PHYSICS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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