As part of the Transient UV Objects project, we have discovered a new outburst (at the beginning of October 2020) of the candidate cataclysmic variable (CV) ASASSN-18eh using the UV/Optical Telescope aboard the Neil Gehrels Swift Observatory. During the outburst its brightness increased by about 6 mag in UV compared to its brightness in the quiescent state. The properties of this outburst are consistent with it being a dwarf nova, strongly supporting the CV nature of ASASSN-18eh.
@article{arxiv.2012.05060,
title = {First ultraviolet outburst detected from ASASSN-18eh strengthens its interpretation as a cataclysmic variable},
author = {Sill Verberne and David Modiano and Rudy Wijnands},
journal= {arXiv preprint arXiv:2012.05060},
year = {2020}
}