Chandra, NuSTAR, and Optical Observations of the Cataclysmic Variables IGR J17528-2022 and IGR J20063+3641

We report on Chandra, NuSTAR, and MDM observations of two INTEGRAL sources, namely IGR J17528-2022 J20063+3641. is an unidentified source, while J20063+3641 was recently identified as a magnetic cataclysmic variable (mCV) by Halpern et al. (2018). The Chandra observation has allowed us to locate the optical counterpart source obtain its spectrum, which shows strong H$\alpha$ emission line. spectrum flickering observed in time-series photometry combination with X-ray well fit absorbed partially covered thermal bremsstrahlung model, suggests that this mCV candidate. reveal clear modulation period 172.46$\pm0.01$ s, we attribute white dwarf spin period. Additional spectroscopy also for determination orbital at 0.731$\pm0.015$ d. model. periodicity, periodicity allow be further classified intermediate polar.