Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...194l..27t&link_type=abstract
Astrophysical Journal, vol. 194, Nov. 15, 1974, pt. 2, p. L27-L33.
Astronomy and Astrophysics
Astrophysics
25
Apollo 16 Flight, Cosmic Rays, Gamma Rays, Spacecraft Instruments, X Ray Spectroscopy, Bursts, Radiant Flux Density, Satellite Observation, Time Dependence, X Ray Sources
Scientific paper
A burst of X-rays was detected during the trans-earth coast phase of Apollo 16 on Apr. 27, 1972 at 10:68 UT, simultaneously with the observation of a transient event by a gamma-ray spectrometer aboard the same spacecraft. The two instruments provide a broad energy range of more than three orders of magnitude for describing the spectral distribution of this event. The conclusion that the incident flux was X-rays and not charged particles is based on the fact that the particle flux detectors in the Apollo gamma ray spectrometer and on the Vela 6A, which also observed the event, did not respond. The time variation of the total count rate in the X-ray range before and after corrections for detector geometry and the analysis for source direction is presented.
Adler Isolde
Bjorkholm Paul
Eller E. L.
Gilman David
Gorenstein Paul
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