  We present an X-ray analysis of fourteen nearby (z < 0.044) AGN in low mass
galaxies (M_* <= 5*10^9 Msun) selected based on their optical variability
(Baldassare et al. 2020). Comparing and contrasting different AGN selection
techniques in low-mass galaxies is essential for obtaining an accurate estimate
of the active fraction in this regime. We use both new and archival
observations from the Chandra X-ray Observatory to search for X-ray point
sources consistent with AGN. Four objects have detected nuclear X-ray emission
with luminosities ranging from L_0.5-7 ~ 3*10^40 to 9*10^42 erg s^-1 with two
more marginal detections. All of the detected galaxies have luminosities
exceeding those anticipated from X-ray binaries, and all sources are nuclear,
suggesting the X-ray emission in most sources is due to an AGN. These
observations demonstrate the success of variability at identifying AGN in
low-mass galaxies. We also explore emission line diagnostics and discuss the
differences in the results of these methods for AGN selection, in particular
regarding low-mass and low-metallicity systems.
