  The present work is devoted to the study of the supernova remnant and its
neutron star XMMU J172054. 5-372652. The paper analyzes observations in 2009
and 2018, data for this system obtained by the Chandra x ray observatory. The
analysis showed that the neutron star G350. 1-0. 3 with M = 1, 4 Msun, R = 13
MS, dist = 4, 5 KPC, we also measured its temperature in two groups: the first
group, including observations made in 2009, and the second group, including 5
observations made at different times of the year 2018. In addition, in this
work, we study all important aspects of the supernova remnants of G350. 1-0. 3,
and obtain their spectra using the collided plasma, nonequilibrium, constant
temperature (VNEI) model, which assumes a constant temperature and a single
ionization parameter. It gives a characteristic of the spectrum, but is not a
physical model, we will precede the spectra obtained using this model.
