Abstract
SATELLITE observations1–3 show an enhanced flux of high energy photons (>30MeV) along the galactic plane. The intensity has a broad and flat maximum extended ∼ 60° around the galactic centre. The average value of the flux in the central region is (1.1±0.3)× 10−4 photons (cm2 sr)−1 in the anticentre direction it is about a factor of five less. The energy spectrum in the range (35–210)MeV is quite flat and possibly indicates that the gamma rays arise from decay of π° mesons.
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References
Kraushaar, W. L., et al., Astrophys. J., 177, 341 (1972).
Kniffen, D. A., Hartman, R. C., Thompson, D. J., and Fichtel, C. E., Astrophys. J. Lett., 186, L105 (1973).
Thompson, D. J., Bignami, G. F., Fichtel, C. E., and Kniffen, D. A., Astrophys. J. Lett., 190, L51 (1974).
Paget, J. L., and Stecker, F. W., Istrophys J., 191, 323 (1974).
Bignami, G. F., and Fichtel, C. E., Astrophys. J. Lett., 189, L65 (1974).
Ögelmann, H., Nature, 221, 753 (1969).
Clark, G. W., Garmire, G. P., and Kraushaar, W. L., Astrophys. J. Lett., 153, L203 (1968).
Friedmann, H., Byram, E. T., and Chubb, T. A., Science, 156, 374 (1967).
Ricker, G. R., McClintock, J. E., Gerassimenko, M., and Lewin, W. H. G., Astrophys. J., 184, 237 (1973).
Dean, A., et al., Astr. Astrophys., 28, 131 (1973).
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FUSCO-FEMIANO, R. Galactic gamma rays from the superposition of X-ray sources. Nature 254, 125–126 (1975). https://doi.org/10.1038/254125b0
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DOI: https://doi.org/10.1038/254125b0
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