- Conference date: 27-30 Apr 1997
- Location: Williamsburg, Virginia (USA)
Source distribution studies only provide meaningful information if the basic populations are carefully determined, especially if the statistics are limited. This necessitates restrictions from the approach of using the complete EGRET source catalog data. Considering various peculiarities of the catalogs a more uniform data set is defined for further source distribution studies. Here, we focus on the temporal and spectral characteristic of the unidentified EGRET high latitude sources Variability is addressed on the basis of flux histories with timescales of individual viewing periods, and spectra are determined for all sources based on the enhanced statistics from EGRET observations of Phase 1 to 4. The derived features are used to discuss whether the unidentified high latitude sources show similarities or differences from classes of already identified objects, or if no conclusive answer can be given.
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