Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phdt.........6k&link_type=abstract
Thesis Tuebingen Univ. (Germany). Inst. für Astronomie.
Astronomy and Astrophysics
Astronomy
Double Stars, Energy Levels, Energy Spectra, Mir Space Station, Pulses, Spaceborne Astronomy, X Ray Astronomy, Scintillation, Spaceborne Experiments, Spectrum Analysis, Statistical Analysis
Scientific paper
Hardware and software of the x-ray astronomy experiment, and the observations of the x-ray pulsar SMC X1 with HEXE (High Energy X Ray Experiment) are presented. The results of HEXE observations of SMC X1 are discussed with regard to already published observations and theoretical models of the physics of x-ray double stars. Statistical methods for detecting periodical signals, in particular Epoch Folding (EF) and Rayleigh Test (RT) are considered for the pulse period determination of SMC X1. Both methods give the same results. The pulse period of the x-ray signal is determined for three observation groups. It is found that hydrogen absorption by the material compassing the neutron stars is low.
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