Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..394n&link_type=abstract
Astrophysical Journal, Part 1, vol. 238, May 15, 1980, p. 394-409. Research supported by the Japan Society for the Promotion of
Astronomy and Astrophysics
Astrophysics
95
Balloon Flight, Cosmic Ray Showers, High Energy Electrons, Nuclear Emulsions, Primary Cosmic Rays, Balloon-Borne Instruments, Gamma Rays, Incident Radiation, Spectral Energy Distribution, X Ray Imagery
Scientific paper
The results of a series of emulsion exposures, beginning in Japan in 1968 and continued in the U.S. since 1975, which have yielded a total balloon-altitude exposure of 98,700 sq m sr s, are presented. The data are discussed in terms of several models of cosmic-ray propagation. Interpreted in terms of the energy-dependent leaky-box model, the spectrum results suggest a galactic electron residence time of 1.0(+2.0, -0.5) x 10 to the 7th yr, which is consistent with results from Be-10 observations. Finally, the possibility that departures from smooth power law behavior in the spectrum due to individual nearby sources will be observable in the energy range above 1 TeV is discussed.
Aizu E.
Fujii Masaaki
Golden R. L.
Hiraiwa H.
Kobayashi Tatsuo
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