The sky region containing the active radio-galaxy Centaurus A has repeatedly been observed with the (COMPTEL) instrument onboard the Compton Gamma Ray Observatory (CGRO). The nine observation periods during the CGRO phases I and II in which Cen A was in the field of view of COMPTEL are spread over 18 months in the years 1991 to 1993. The energy range 0.75 to 30 MeV is covered. Clear evidence for a source with emission up to several MeV is seen from a region coinciding with the position of Cen A. The spectra change significantly over approximately 6 months between the two observation phases. A possible source confusion with the nearby gamma-ray source MS1312.1-4221 is discussed.


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    Title :

    CGRO-Comptel observations of the Centaurus A region


    Contributors:
    Steinle, H. (author) / Bennett, K. (author) / Bloemen, H. (author) / Collmar, W. (author) / Diehl, R. (author) / Hermsen, W. (author) / Lichti, G (author) / Mcconnell, M. (author) / Morris, D. (author) / Much, R. (author)

    Published in:

    Publication date :

    1995-05-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :


    CGRO-COMPTEL Observations of the Centaurus A Region

    Steinle, H. / Bennett, K. / Bloemen, H. et al. | British Library Conference Proceedings | 1995


    CGRO-COMPTEL Observations of the Centaurus A Region

    Steinle, H. | Online Contents | 1995


    COMPTEL Observations of AGNs

    Steinle, H. / Bloemen, H. / Collmar, W. et al. | British Library Conference Proceedings | 1993


    COMPTEL observations of AGNs

    Steinle, H. / Bloemen, H. / Collmar, W. et al. | Elsevier | 1993


    COMPTEL Observations of AGNs

    Steinle, H. | Online Contents | 1993