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.


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    Title :

    Detection of thermal X-ray emission in the halo of the plerionic supernova remnant G21.5-0.9


    Contributors:

    Published in:

    Advances in Space Research ; 35 , 6 ; 1003-1006


    Publication date :

    2005-01-13


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    The plerionic supernova remnant G21.5-0.9: In and out

    Matheson, Heather / Safi-Harb, Samar | Elsevier | 2005


    The plerionic supernova remnant G21.5-0.9: In and out

    Matheson, H. / Safi-Harb, S. / COSPAR | British Library Conference Proceedings | 2005


    The plerionic supernova remnant G21.5-0.9: In and out

    Matheson, Heather | Online Contents | 2005