ASASSN -21kt , the SIMBAD biblio

We report on archival XMM-Newton and post-outburst Swift observations of the newly discovered dwarf nova ASASSN-21kt. Its pre-outburst X-ray emission is consistent with that of a collisionally ionized, thermal plasma with ${kT}={8.1}_{-2.5}^{+10.2}$ keV and L_X 0.2-12 keV_ = 7 × 10³² erg s^–1, with no clear modulation. Multiple optical outbursts revealed by Gaia and time evolution of the last one followed by the All-Sky Automated Survey for Supernovae, and X-ray properties presented here support the dwarf nova classification of ASASSN-21kt.