%0 Journal Article %T Chandra Observations of "The Antennae" Galaxies (NGC 4038/39) %A G. Fabbiano %A A. Zezas %A S. S. Murray %J Physics %D 2001 %I arXiv %R 10.1086/321397 %X We report the results of a deep Chandra ACIS pointing at the merging system NGC 4038/39. We detect an extraordinarily luminous population of X-ray sources, with luminosity well above that of XRBs in M31 and the Milky Way. If these sources are unbeamed XRBs, our observations may point to them being 10-100Mo black hole counterparts. We detect an X-ray bright hot ISM, with features including bright superbubbles associated with the actively star-forming knots, regions where hot and warm (H$\alpha$) ISM intermingle, and a large-scale outflow. %U http://arxiv.org/abs/astro-ph/0102256v2