A number of observations from the SMM Gamma-Ray Spectrometer are presented that altogether strongly indicate that the high-energy emission from flares is anisotropic. They are: (1) the fraction of events detected at energies above 300 keV near the limb is significantly higher than is expected for isotropically emitting flares; (2) there is a statistically significant center-to-limb variation in the 300-1000-keV spectra of flares; and (3) nearly all of the events detected at above 10 MeV are located near the limb.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Evidence for solar flare directivity from the Gamma-Ray Spectrometer aboard the SMM satellite


    Contributors:
    Vestrand, W. T. (author) / Forrest, D. J. (author) / Chupp, E. L. (author) / Rieger, E. (author) / Share, G. H. (author)

    Published in:

    Publication date :

    1986-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Spatial variation for flares observed with the gamma ray spectrometer aboard the SMM satellite

    Zolcinski, M.C. / Forrest, D.J. / Ryan, J.M. et al. | Elsevier | 1983


    Spatial variation for flares observed with the gamma ray spectrometer aboard the SMM satellite

    Zolcinski, M. C. / Forrest, D. J. / Ryan, J. M. et al. | NTRS | 1982


    The Gas Chromatograph Mass Spectrometer Aboard Huygens

    Niemann, H. et al. | British Library Online Contents | 1997


    Solar-flare neutrons and gamma-rays

    Murphy, R. J. / Ramaty, R. | NTRS | 1984


    Solar-flare neutrons and gamma rays

    Murphy, R.J. / Ramaty, R. | Elsevier | 1984