Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.174..315y&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 174, no. 2, Dec. 1990, p. 315-319.
Astronomy and Astrophysics
Astronomy
Extragalactic Radio Sources, Gamma Ray Astronomy, Data Sampling, Error Analysis, Frequency Distribution
Scientific paper
The application of the bootstrap sampling technique described by Simpson and Mayer-Hasselwander (1986) to the search of gamma-ray signals from three extragalactic sources, NGC 4151, 3C 273, and Cen-A, is demonstrated. A bootstrap sample was formed by drawing a data subset from the originally observed data, by random resampling with replacement. The required statistics were calculated for each bootstrap sample, and, after a sufficient number of bootstrap samples was obtained, the frequency distribution of the required statistics was determined. The bootstrap confidence intervals obtained for the three objects are found to be in agreement with results obtained in previous investigations of these gamma-ray sources.
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