AbstractThe detection of a soft thermal X-ray component in the spectrum of a bright knot in the halo of the plerion G21.5-0.9 is reported. Using a collisional ionization equilibrium model for an hot optically thin plasma, a temperature of kT 0.12–0.24keV, a mass of 0.3–1.0M⊙ and a density of 1.6–6cm−3 is derived. The spectral analysis suggests a possible overabundance of Silicon with respect to the solar value in the knot; if this will be confirmed this object may be a clump of shocked ejecta.
Detection of thermal X-ray emission in the halo of the plerionic supernova remnant G21.5-0.9
Advances in Space Research ; 35 , 6 ; 1003-1006
2005-01-13
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
The plerionic supernova remnant G21.5-0.9: In and out
Elsevier | 2005
|The plerionic supernova remnant G21.5-0.9: In and out
Online Contents | 2005
|The plerionic supernova remnant G21.5-0.9: In and out
British Library Conference Proceedings | 2005
|Detection of thermal X-ray emission in the halo of the plerionic supernova remnant G21.5-0.9
Online Contents | 2005
|