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Pulsar Wind Nebulae in Egret Error Boxes
Authors:Mallory S. E. Roberts  Crystal L. Brogan  Bryan M. Gaensler  Jason W. T. Hessels  C.-Y. Ng  Roger W. Romani
Affiliation:(1) McGill University/Eureka Scientific, USA;(2) Institute for Astronomy, Harvard-Smithsonian CfA, McGill University, Canada;(3) Stanford University, USA
Abstract:A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET γ-ray sources. X-ray and radio imaging studies of unidentified EGRET sources have resulted in the discovery of at least six new pulsar wind nebulae (PWN). Stationary PWN (SPWN) appear to be associated with steady EGRET sources with hard spectra, typical for γ-ray pulsars. Their toroidal morphologies can help determine the geometry of the pulsar which is useful for constraining models of pulsed γ-ray emission. Rapidly moving PWN (RPWN) with more cometary morphologies seem to be associated with variable EGRET sources in regions where the ambient medium is dense compared to what is typical for the ISM.
Keywords:PWN  EGRET  PSR J2021+3651  GeV J1809−  2327  RABBIT  gamma-ray
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