Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213..588f&link_type=abstract
Astrophysical Journal, Part 1, vol. 213, Apr. 15, 1977, p. 588-598.
Astronomy and Astrophysics
Astrophysics
18
Energy Spectra, High Energy Electrons, Interstellar Magnetic Fields, Primary Cosmic Rays, Radiation Measurement, Synchrotron Radiation, Cosmic Ray Showers, Electron Energy, Life (Durability), Nonthermal Radiation, Radiation Detectors, Radio Spectra, Spark Chambers
Scientific paper
Results are reported for measurement of the intensity and energy spectrum of primary cosmic-ray electrons with a spark-chamber-counter-emulsion detector flown at a mean altitude of 3 g/sq cm residual atmosphere. A least-squares fit to the flight data yields an electron spectrum from 8 to 80 GeV of approximately 93E to the -2.91 power electrons/sq m/sec per sr/GeV. The results are compared with those of previous experiments as well as with the spectrum obtained for galactic nonthermal radiation. It is concluded that a 'clumpy' magnetic field proportional to the square root of matter density is consistent with measurements of high-energy electrons and synchrotron radiation toward the center of the Galaxy, that a gradual steepening of the electron spectrum relative to the proton spectrum is consistent with an electron lifetime of 1 million years, and that the density of cosmic-ray nucleons and electrons should be essentially uniform throughout the Galaxy if the nucleons have the same lifetime as the electrons and if they traversed 4 to 5 g/sq cm in that lifetime.
Freier Phyllis
Gilman Chuck
Waddington Jake C.
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