Losing a minute every two years: SRG X ray view on the rapidly accelerating X ray pulsar SXP1323
SXP 1323 is a peculiar high mass X ray binary located in the Small Magellanic Cloud, renowned for its rapid spin up. We investigate for the first time broadband X ray properties of SXP1323, as observed by the Mikhail Pavlinsky ART XC and eRosita telescopes on board the SRG observatory. Using ART XC and eRosita, data we produced first broadband 1 20 keV X ray spectrum and estimated pulsed fraction above 8 keV. With the addition of archival XMM Newton observations we traced evolution of the SXP 1323 spin period over the last five years and found that after 2016 the source switched to a linear spin up with rate of 29.9 s yr$ 1} Broadband X ray spectrum is typical for accreting X ray pulsars, with steep powerlaw index \Gamma$ 0.15) and exponential cutoff energy of 5.1 keV. No significant difference between spectra obtained in states with and without pulsations were found.