AbstractWe discuss millisecond period brightness oscillations and surface atomic spectral lines observed during type I X-ray bursts from a neutron star in a low mass X-ray binary system. We show that modeling of these phenomena can constrain models of the dense cold matter at the cores of neutron stars. We demonstrate that, even for a broad and asymmetric spectral line, the stellar radius-to-mass ratio can be inferred to better than 5%. We also fit our theoretical models to the burst oscillation data of the low mass X-ray binary XTE J1814-338, and find that the 90% confidence lower limit of the neutron star’s dimensionless radius-to-mass ratio is 4.2.


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    Title :

    Understanding high-density matter through analysis of surface spectral lines and burst oscillations from accreting neutron stars



    Published in:

    Advances in Space Research ; 38 , 12 ; 2765-2767


    Publication date :

    2005-10-27


    Size :

    3 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English