X-ray observations of the supernova remnant W44
Open Access
- 1 November 1985
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 217 (1) , 99-104
- https://doi.org/10.1093/mnras/217.1.99
Abstract
We present Einstein Observatory X-ray observations of the supernova remnant W44(G34.7–0.4). The X-ray morphology is centrally peaked and shows an anti-correlation with the radio shell. X-ray spectral data indicate a temperature for the emitting plasma of approximately 1 keV. We suggest a model for W44 in which the remnant is in its late adiabatic phase. The soft X-ray shell has become too cool to be observable through the intervening ISM, yet a hotter interior remains visible. W44 would then appear to fit in reasonably well with the generally accepted evolution of shell-like remnants and a Crab-like component is not required to explain the X-ray morphology.Keywords
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