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Non-Equilibrium Ionization in Puppis A

Published online by Cambridge University Press:  04 August 2017

P. F. Winkler ,
C. R. Canizares  and
B. C. Bromley
P. F. Winkler
Affiliation:
Department of Physics, Middlebury College
C. R. Canizares
Affiliation:
Department of Physics and Center for Space Research Massachusetts Institute of Technology Alfred P. Sloan Research Fellow
B. C. Bromley
Affiliation:
Department of Physics, Middlebury College

Abstract

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High resolution X-ray spectroscopy of the brightest knot of emission in the Puppis A supernova remnant shows that it is made up of ionizing plasma, far from equilibrium. Flux measurements in several X-ray lines enable us to determine the non-equilibrium conditions: electron temperature, ion populations, and time since the knot was heated by the supernova shock. Imaging and spectroscopic data from the Einstein Observatory together suggest that this knot is a cloud of density about 10 cm−3 which has recently been shocked to a temperature 7 × 106 K. Radio and optical data on the region appear consistent with this picture.

Type
II. Middle Aged and Older Supernova Remnants
Information
Symposium - International Astronomical Union , Volume 101: Supernova Remnants and Their X-Ray Emission , 1983 , pp. 245 - 252
Copyright
Copyright © Reidel 1983 

References

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