A brief description of the experiments carried out so far to measure the energy spectrum of antiprotons is made and the reason for the excitement in this field of research is elucidated. The observed spectrum appears to be different form the other components of cosmic rays. Various physical processes by which antiprotons could be created are summarized. The equilibrium spectrum of antiprotons in the Galaxy, arising from each of these processes, is derived for different propagation models. It is shown that no single model can predict correctly the observed data over the entire energy region. However, the recent data at low energies suggest that the conventional models with large amount of matter traversal by cosmic rays, either in the source region or during propagation, can reproduce the data closely. The implications of these propagation models for other components are discussed and the need for more observations is emphasized.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Antiprotons in cosmic rays and their implications


    Contributors:

    Published in:

    Publication date :

    1989-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English






    Propagation of secondary antiprotons and cosmic rays in the Galaxy

    Moskalenko, I. V. / Strong, A. W. / Ormes, J. F. et al. | British Library Conference Proceedings | 2005


    Trapped Antiprotons Produced by Cosmic Rays in the Earth's Magnetosphere

    Pugacheva, G. / Gusev, A. A. / Jayanthi, U. B. et al. | British Library Conference Proceedings | 2004