Parameter estimation in X-ray astronomy

Details Parameter estimation in X-ray astronomy Parameter estimation in X-ray astronomy

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...208..177l&link_type=abstract

Astrophysical Journal, vol. 208, Aug. 15, 1976, pt. 1, p. 177-190.

Astronomy and Astrophysics

Astronomy

887

Astronomical Models, Statistical Tests, X Ray Astronomy, Classifications, Data Processing, Digital Simulation, Error Analysis, Estimating, Mathematical Models, X Ray Sources

Scientific paper

Two important problems encountered in X-ray astronomy are considered: the assessment of the validity of models, and the determination of values of adjustable parameters which valid models possess. Minimization of the chi-squared statistic is recommended for testing the validity of classes of models. The chi-squared min + 1 error estimation method is evaluated and found to be unsuitable when several parameter ranges are to be derived. The ratio of variances method gives parameter confidence regions which are more variable than necessary.

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