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Differential Imaging of [Fe X] in IC 443

Published online by Cambridge University Press:  12 April 2016

Larry Brown
Affiliation:
NASA/Goddard Space Flight Center, Greenbelt, MD 20771
Bruce E. Woodgate
Affiliation:
NASA/Goddard Space Flight Center, Greenbelt, MD 20771
Robert Petre
Affiliation:
NASA/Goddard Space Flight Center, Greenbelt, MD 20771
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Abstract

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This paper presents images of two areas of the supernova remnant IC443 showing emission from the [Fe X] 6374Å red coronal line taken with an emission line differential imaging camera. The areas are in the vicinity of strong soft X-ray emission as observed with the Einstein Observatory. The [Fe X] emission is patchy on the scale of seconds of arc. For the highest emission regions we find an electron density of approximately 100 cm−3 and gas pressures of 108cm−3K. No correlation is found between the X-ray and [Fe X] knots, and the results support a clumpy, multi-temperature region where the [Fe X] knots are balanced between collapse and evaporation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

References

Cowie, L.L., and McKee, C.F. 1977, Astrophys. J. 215, 213.Google Scholar
Losinskaya, T.A. 1979, Astr. Astrophys. 71, 29.Google Scholar
Petre, R. Szymkowiak, A.E., and Seward, F.D. 1987, Astrophys. J., (submitted).Google Scholar
Woodgate, B.E., Lucke, R.L., and Socker, D.G. 1979, Astrophys. J. 229, L119.CrossRefGoogle Scholar
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