Examining supernova events in Type 1 active galactic nuclei
  A statistical study of intermediate Palomar Transient Factory supernovae
(SNe) in Type 1 AGN has shown a major deficit of supernovae around Type 1 AGN
host galaxies, with respect to Type 2 AGN hosts. The aim of this work is to
test whether there is any preference for Type 1 AGN to host SN of a specific
kind. Through the analysis of SN occurrence and their type (thermonuclear vs
core-collapse), we can directly link the type of stars producing the SN events,
thus this is an indirect way to study host galaxies in Type 1 AGN. We examine
the detection fractions of SNe, the host galaxies and compare the sample
properties to typical host galaxies in the Open Supernova Catalog (OSC;
Guillochon et al. 2017). The majority of the host galaxies in the AGN sample
are late-type, similar to typical galaxies hosting SN within the OSC. The
findings are supportive of a deficiency of SNe near Type 1 AGN, although we
cannot with certainty assess the overall detection fractions of SNe in Type 1
AGN relative to other SN host galaxies. We can state that Type 1 AGN has equal
detection fractions of thermonuclear vs core-collapse SNe. However, we note the
possibility of a higher detection rate of core-collapse supernovae in Type-1
AGN with insecure AGN classifications.
