AbstractElectron–positron annihilation radiation from the Galactic Center Region has been detected since the seventies, but its astrophysical origin is still a topic of a scientific debate. We have analyzed data of the gamma-ray imager IBIS/ISGRI onboard of ESA’s INTEGRAL platform in the ee+ line. During the first year of the missions Galactic Center Deep Exposure no evidence for point sources at 511 keV has been found in the ISGRI data; the 2σ upper limit for resolved single point sources is estimated to be 1.6×10−4 phcm−2s−1.


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    Title :

    INTEGRAL/IBIS search for ee+ annihilation radiation from the galactic center region


    Contributors:
    De Cesare, G. (author) / Bazzano, A. (author) / Capitanio, F. (author) / Del Santo, M. (author) / Lonjou, V. (author) / Natalucci, L. (author) / Ubertini, P. (author) / Von Ballmoos, P. (author)

    Published in:

    Advances in Space Research ; 38 , 7 ; 1457-1460


    Publication date :

    2005-01-05


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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    Matteson, J. / Pelling, M. / Peterson, L. et al. | NTRS | 1991


    An observation of annihilation radiation from the Galactic Center region

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    Galactic Positron Annihilation Radiation

    Kurfess, J. D. / International Council of Scientific Unions | British Library Conference Proceedings | 2000


    The IBIS Telescope On Board INTEGRAL

    Ubertini, P. / Di Cocco, G. / Lebrun, F. et al. | British Library Online Contents | 1997