X-ray investigation of the X-ray source 1RXS J121902.7-630910 with Suzaku

We present a study of the unidentified X-ray source 1RXS J121902.7-630910 based on Suzaku X-ray Imaging Spectrometer obser-vation. We aim at clarifying the nature of the emission from 1RXS J121902.7-630910. We found that the spectrum is well represented by a thermal plasma model with an electron temperature of kTe 3.7 keV, the upper limit of ionization time-scale of s 5.6 x 1010 cm -3 s, and the absorbing column density of NH 0.5 x 1021 cm -2. We investigated the possible origin of 1RXS J121902.7-630910, and found optical counterpart candidates to this X-ray source. We conclude that it could be a point-like source compared to the analysis results of an extended source, and observations at other wavelengths are needed to confirm its nature.(c) 2022 COSPAR. Published by Elsevier B.V. All rights reserved.