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We report on the 0.1--100 keV BeppoSAX observations of two nearby LINERgalaxies, Sombrero and NGC 4736. Chandra ACIS-S observations supplement thisbroad-beam spectral study with a high resolution look into the nuclear region,and show a dominating central point source in Sombrero and a complex X-raybinary dominated/starburst region in NGC 4736. A compact non-thermal radiosource, present in the nucleus of both galaxies, coincides with the centralsource in Sombrero, while in NGC 4736 its X-ray counterpart is a much fainterpoint source, not the brightest of the central region. On the basis of theseand other results, we conclude that the LINER activity is linked to thepresence of a low luminosity AGN in Sombrero and to a recent starburst in NGC4736, and that Chandra's spectroscopic capabilities coupled to high resolutionimaging are essential to establish the origin of the nuclear activity.Comment: 13 pages, 12 figures (Fig. 4 and Fig. 5 are colour figures), to be  published in Astronomy & Astrophysic

Nuclear and global X-ray properties of LINER galaxies:ChandraandBeppoSAXresults for Sombrero and NGC 4736