AbstractWe report on the results of our monitoring program of the X-ray remnant of supernova 1987A with the Chandra X-ray Observatory. We have performed two new observations during the Chandra Cycle 3 period, bringing the total to six monitoring observations over the past three years. These six observations provide a detailed time history of the birth of a new supernova remnant in X-rays. The high angular resolution images indicate that soft X-ray bright knots are associated with the optical spots, while hard X-ray features are better correlated with radio images. We interpret this in terms of a model in which fast shocks propagating through the circumstellar HII region produce the hard X-ray and radio emission, while the soft X-ray and optical emission arise in slower shocks entering into dense knots in the circumstellar inner ring. New observations begin to show changes in the morphology that may herald a new stage in the development of this incipient supernova remnant. The observed X-ray fluxes increase by nearly a factor of three over the last 30 months. The X-ray remnant is expanding at a velocity of ∼5000 km s−1.


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    Titel :

    Chandra observations of SNR 1987A


    Beteiligte:
    Park, S. (Autor:in) / Zhekov, S.A. (Autor:in) / Burrows, D.N. (Autor:in) / Michael, E. (Autor:in) / McCray, R. (Autor:in) / Garmire, G.P. (Autor:in) / Hasinger, G. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 33 , 4 ; 386-391


    Erscheinungsdatum :

    2003-08-19


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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    Park, S. | Online Contents | 2004


    Chandra Observations of SNR 1987A

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    Supernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations

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    Supernova remnant 1987A: The latest report from the Chandra X-ray Observatory

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