X-ray Observations of Planetary Nebulae

M. A. Guerrero; Y. -H. Chu; R. A. Gruendl

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arXiv · astro-ph/0310309

X-ray Observations of Planetary Nebulae

M. A. Guerrero·Y. -H. Chu·R. A. Gruendl

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Abstract

Planetary nebulae (PNe) are an exciting addition to the zoo of X-ray sources. Recent Chandra and XMM-Newton observations have detected diffuse X-ray emission from shocked fast winds in PN interiors as well as bow-shocks of fast collimated outflows impinging on the nebular envelope. Point X-ray sources associated with PN central stars are also detected, with the soft X-ray (<0.5 keV) emission originating from the photospheres of stars hotter than ~100,000 K, and the hard X-ray (>>0.5 keV) emission from instability shocks in the fast stellar wind itself or from a low-mass companion's coronal activity. X-ray observations of PNe offer a unique opportunity to directly examine the dynamic effects of fast stellar winds and collimated outflows, and help us understand the formation and evolution of PNe.

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M. A. Guerrero, Y. -H. Chu, R. A. Gruendl. 2003-10-10. X-ray Observations of Planetary Nebulae. https://arxiv.org/abs/astro-ph/0310309

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