COS-B gamma ray sources beyond the predicted diffuse emission

Details COS-B gamma ray sources beyond the predicted diffuse emission COS-B gamma ray sources beyond the predicted diffuse emission

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3071..153m&link_type=abstract

In NASA, Goddard Space Flight Center, The Energetic Gamma-Ray Experiment Telescope (EGRET) Science Symposium p 153-159 (SEE N90-

Statistics

Methodology

2

Background Radiation, Diffuse Radiation, Gamma Rays, Radiation Sources, Sampling, Simulation, Cos-B Satellite, Errors, Gamma Ray Spectra, Hydrogen, Molecular Gases

Scientific paper

COS-B data were reanalyzed using for background subtraction the modeled galactic diffuse gamma-ray emission based on HI- and CO-line surveys and the gamma-ray data itself. A methodology was developed for this purpose with the following three features: automatic generation of source catalogs using correlation analysis, simulation of trials to derive significance thresholds for source detection, and bootstrap sampling to drive error boxes and confidence intervals for source parameters. The analysis shows that about half of the 2CG sources are explained by concentrations in the distribution of molecular hydrogen. Indication for a few weak new sources is also obtained.

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