A Multiwavelength Dynamical State Analysis of ACT-CL J0019.6+0336
  In our study, we show a multiwavelength view of ACT-CL J0019.6+0336 (which
hosts a radio halo), to investigate the cluster dynamics, morphology, and ICM.
We use a combination of XMM-Newton images, Dark Energy Survey (DES) imaging and
photometry, SDSS spectroscopic information, and 1.16 GHz MeerKAT data to study
the cluster properties. Various X-ray and optical morphology parameters are
calculated to investigate the level of disturbance. We find disturbances in two
X-ray parameters and the optical density map shows elongated and axisymmetric
structures with the main cluster component southeast of the cluster centre and
another component northwest of the cluster centre. We also find a BCG offset of
$\sim$950 km/s from the mean velocity of the cluster, and a discrepancy between
the SZ mass, X-ray mass, and dynamical mass ($M_{X,500}$ and $M_{SZ,500}$ lies
>3 $\sigma$ away from $M_{\rm{dyn},500}$), showing that J0019 is a merging
cluster and probably in a post-merging phase.
