Is there a UV/X-ray connection in IRAS 13224-3809?
  We present results from the optical, ultraviolet and X-ray monitoring of the
NLS1 galaxy IRAS 13224-3809 taken with Swift and XMM-Newton during 2016. IRAS
13224-3809 is the most variable bright AGN in the X-ray sky and shows strong
X-ray reflection, implying that the X-rays strongly illuminate the inner disc.
Therefore, it is a good candidate to study the relationship between coronal
X-ray and disc UV emission. However, we find no correlation between the X-ray
and UV flux over the available ~40 day monitoring, despite the presence of
strong X-ray variability and the variable part of the UV spectrum being
consistent with irradiation of a standard thin disc. This means either that the
X-ray flux which irradiates the UV emitting outer disc does not correlate with
the X-ray flux in our line of sight and/or that another process drives the
majority of the UV variability. The former case may be due to changes in
coronal geometry, absorption or scattering between the corona and the disc.
