Abstract We have searched for anisotropic X-ray bremsstrahlung photon production from relativistic electrons by studying the heliocentric angular dependence of 53 flares detected at energies above 300 keV. We have found no evidence for a higher rate of detectable flares near the limb at the 80% confidence level. This result implies that the X-ray directivity as defined by the ratio of photon intensity at 75° and 0° of heliocentric angle is less than 1.5 above 300 keV and strongly rejects any flare model predicting X-ray production from a radial “beam” of energetic electrons.


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    Title :

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


    Contributors:
    Zolcinski, M.C. (author) / Forrest, D.J. (author) / Ryan, J.M. (author) / Chupp, E.L. (author) / Kanbach, G. (author) / Reppin, C. (author) / Rieger, E. (author) / Share, G.H. (author)

    Published in:

    Advances in Space Research ; 2 , 11 ; 193-196


    Publication date :

    1983-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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