A search is made 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. No evidence is found for a higher rate of detectable flares near the limb at the 80 percent confidence level. This result implies that the X-ray directivity as defined by the ratio of photon intensity at 75 deg and 0 deg 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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    Titel :

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


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

    Erscheinungsdatum :

    01.01.1982



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    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



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

    Vestrand, W. T. / Forrest, D. J. / Chupp, E. L. et al. | NTRS | 1986


    The Gas Chromatograph Mass Spectrometer Aboard Huygens

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


    The signe II gamma-ray burst experiment aboard the prognoz 9 satellite

    Boer, M. / Hurley, K. / Niel, M. et al. | Elsevier | 1986