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A Comparison of Three Regions of Puppis A

Published online by Cambridge University Press:  12 April 2016

K.F. Fischbach ,
L.M. Bateman ,
C.R. Canizares ,
T.H. Markert  and
P.J. Saez
K.F. Fischbach
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A.
L.M. Bateman
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A.
C.R. Canizares
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A.
T.H. Markert
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A.
P.J. Saez
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts, U.S.A.

Abstract

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High resolution X-ray spectral observations of Puppis A were performed with the FPCS on the Einstein Observatory at three regions of the remnant: the shock front, the bright eastern knot, and the interior. Plasma diagnostics of lines from OVII and OVIII constrain the values of electron temperature, ionization timescale, and hydrogen column density. We compare results of the diagnostics for these three regions. A non-equilibrium analysis of previously published fluxes of oxygen lines shows that the interior has not yet reached ionization equilibrium.

Type
4. Supernova Remnants, Soft X-ray Background
Information
International Astronomical Union Colloquium , Volume 115: High Resolution X-ray Spectroscopy of Cosmic Plasmas , 1990 , pp. 172 - 175
Copyright
Copyright © Cambridge University Press 1990

References

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