ASCA X‐Ray Source Catalog in the Galactic Center Region

The ASCA satellite made 107 pointing observations on a 5 x 5 deg^2 regionaround the center of our Milky Way Galaxy (the Galactic Center) from 1993 to1999. In the X-ray images of the 0.7--3 keV or 3--10 keV bands, we found 52point sources and a dozen diffuse sources. All the point sources are uniformlyfitted with an absorbed power-law model. For selected bright sources, Sgr A*,AX J1745.6-2901, A 1742-294, SLX 1744-300, GRO J1744-28, SLX 1737-282, GRS1734-292, AX J1749.2-2725, KS 1741-293, GRS 1741.9-2853, and an unusual flaresource XTE J1739-302, we present further detailed spectral and timing analyses,and discuss their nature. The dozen extended X-ray sources comprise radio supernova remnants, giantmolecular clouds, and some new discoveries. Most show emission lines fromeither highly ionized atoms or low-ionized irons. The X-ray spectra were fitted with either a thin thermal or power-law model.This paper summarizes the results and provides the ASCA X-ray source cataloguein the Galactic Center region.