Cats Eye Nebula Constellation Guide

Related: Cats Eyes Cats Eye Jewelry Cats Eye Draining Cats Eye Potion Cats Eye Runny Cats Eye Marble Cats Eye Sapphire Cats Eye Reflector

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In 2001, observations at X-ray wavelengths by the Chandra X-ray Observatory revealed the presence of extremely hot gas within NGC 6543 with the temperature of 1. 7×106 K. It is thought that the very hot gas results from the violent interaction of a fast stellar wind with material previously ejected. This interaction has hollowed out the inner bubble of the nebula. Chandra observations have also revealed a point source at the position of the central star. The spectrum of this source extends to the hard part of the X-ray spectrum, to 0. 5–1. 0 keV. A star with the photospheric temperature of about 100000 K would not be expected to emit strongly in hard X-rays, and so their presence is something of a mystery. It may suggest the presence of a high temperature accretion disk within a binary star system. The hard X-ray data remain intriguing more than ten years later: the Cat's Eye was included in a 2012 Chandra survey of 21 central stars of planetary nebulae (CSPNe) in the solar neighborhood, which found: "All but one of the X-ray point sources detected at CSPNe display X-ray spectra that are harder than expected from hot (~100000 K) central star photospheres, possibly indicating a high frequency of binary companions to CSPNe. Other potential explanations include self-shocking winds or PN mass fallback. "


Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
Cats Eye Nebula NGC 6543 Constellation Guide
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