Abstract Results of three new balloon flights have recently become available concerning the galactic center electron-positron annihilation line at 511 keV. The groups involved were the University of New Hampshire, Durham, New Hamsphire; NASA Goddard Center for Nuclear Studies, USA; CEN Saclay, Gif Sur Yvette, France; and Bell Laboratories/Sandia Laboratories, USA. In these flights a “low” or “off” state was observed in the fall of 1981. Also, new evidence for a low energy “positronium” — like tail on the line has been obtained from a 1977 flight. These results are reviewed.


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    Title :

    Recent balloon flight results concerning the galactic center 511 keV line


    Contributors:

    Published in:

    Publication date :

    1983-01-01


    Size :

    1 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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