Ultra-Luminous X-ray Source Populations in Normal Galaxies : a Preliminary Survey with Chandra

We present results of a Chandra survey of the ultra-luminous X-ray sources (ULX) in 13 normal galaxies, in which we combine source detection with X-ray flux measurement. 22 ULX were detected, i.e. with Lx > 1 × 10 39 erg s (L10), and 39 other sources were detected with Lx > 5 × 10 38 erg s (L5). We also use radial intensity profiles to remove extended… (More)

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