Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..64..213w&link_type=abstract
Astrophysics and Space Science, vol. 64, no. 1, Aug. 1979, p. 213-225. Research supported by the Australian Research Grants Com
Astronomy and Astrophysics
Astronomy
Cosmic X Rays, Data Reduction, Spectrum Analysis, X Ray Astronomy, Balloon-Borne Instruments, Computerized Simulation, Proportional Counters, Scintillation Counters, Vertical Distribution, X Ray Fluorescence, Xenon
Scientific paper
The results of a numerical investigation of three methods of cosmic X-ray spectral reduction, with an emphasis on the apodization technique of Dolan (1972), is reported. The study was carried out in the 10 to 100 keV energy range on pulse height distributions synthesized from simple X-ray source spectra with predetermined parameters. The spectral response function used was that of a balloon-borne, large area, xenon-filled proportional counter, but the results are considered relevant to other non-dispersive systems such as scintillators and low energy proportional counters. The apodization solution was investigated as a function of counter resolution, fluorescence escape probability, extent of energy window, number of pulse height channels, and apodization instrument factor. It was concluded that generally apodization should be the preferred reduction technique, but that the minimum chi square method may be useful as the final step in obtaining refined spectral parameter estimates.
Thomas Rajat M.
Watts Duncan J.
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