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X-ray emission from Planetary Nebulae

Published online by Cambridge University Press:  25 May 2016

Gail M. Conway
Affiliation:
University of Illinois at Urbana-Champaign
You-Hua Chu
Affiliation:
University of Illinois at Urbana-Champaign

Extract

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X-ray emission from planetary nebulae (PNe) may originate from two sources: central stars which are 100,000–200,000 K will emit soft X-rays, and shocked fast stellar winds reaching 106–107 K will emit harder X-rays. The former are point sources, while the shocked winds are expected to be extended sources emitting continuously out to the inner wall of the visible nebular shell (Weaver et al. 1977; Wrigge & Wendker 1996).

Type
IV. Envelopes
Copyright
Copyright © Kluwer 1997 

References

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