Abstract Most, but not all, theoretical models of X-ray bursters require a binary system consisting of a mass donating star and a neutron star. The observational evidence in support of this model, however, is both indirect and meager. We have detected absorption dips in the X-ray spectrum of the Burster MXB 1916-05 with the IPC and the MPC on the Einstein Observatory which occur with a binary period of 2985 seconds. These dips are shown to be the result of a gas stream emanating from a companion star and hence this data represents the first direct evidence of the binary nature of X-ray bursters. Detailed models of the interaction of the gas stream with the accretion disk are presented. A 22nd mag. optical candidate for the system has been found.


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    Title :

    Observational evidence for the binary model of X-ray bursters


    Contributors:
    Bowyer, S. (author) / Clarke, J. (author) / Mason, K. (author) / Walter, F. (author) / Henry, J. (author) / Halpern, J. (author) / Grindlay, J. (author)

    Published in:

    Publication date :

    1982-01-01


    Size :

    1 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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