We conducted a monitoring observation of the starburst galaxy NGC 2146 with Chandra in 2002. We detected 72 point sources. Seven sources are ultra-luminous X-ray sources (ULXs) with luminosities of more than 1039 ergs s-1. However, even the luminosity of the brightest source is 2 ×1039 ergs s-1 while that of the IMBH in M82 is ∼1041 ergs s-1. We found a hard X-ray point source at the dynamical center derived from a 12CO rotation curve. Its luminosity is ∼1 ×1039 ergs s-1, which is dim if it is an AGN. We cannot identify either the NIR or radio counterparts of Chandra sources from the 2MASS All-Sky Point Source Catalogue or MERLIN and the VLA results. We summarized the characteristics of these Chandra sources and compiled the source catalogue of NGC 2146. We found diffuse emission in both a soft (0.5–2.0 keV) and a hard (2.0–10.0 keV) band. The spectra were fitted with a two-component model. The luminosity of the hard component is ∼4×1039 ergs s-1.
URL : http://ptp.ipap.jp/link?PTPS/155/347/
DOI : 10.1143/PTPS.155.347