Clustering of galaxies around AGN in the HSC Wide survey
  We have measured the clustering of galaxies around active galactic nuclei
(AGN) for which single-epoch virial masses of the super-massive black hole
(SMBH) are available to investigate the relation between the large scale
environment of AGNs and the evolution of SMBHs. The AGN samples used in this
work were derived from the Sloan Digital Sky Survey (SDSS) observations and the
galaxy samples were from 240~deg$^{2}$ S15b data of the Hyper Suprime-Cam
Subaru Strategic Program (HSC-SSP). The investigated redshift range is
0.6--3.0, and the masses of the SMBHs lie in the range
$10^{7.5}$--$10^{10}$~M$_{\odot}$. The absolute magnitude of the galaxy samples
reaches to $M_{\lambda 310}$ $\sim$ $-$18 at rest frame wavelength 310~nm for
the low-redshift end of the samples. More than 70\% of the galaxies in the
analysis are blue. We found a significant dependence of the cross-correlation
length on redshift, which primarily reflects the brightness dependence of the
galaxy clustering. At the lowest redshifts the cross-correlation length
increases from 7~$h^{-1}$~Mpc around $M_{\lambda 310}$$ = $$-19$~mag to
$>$10~$h^{-1}$~Mpc beyond $M_{\lambda 310}$$ = $$-20$~mag. No significant
dependence of the cross-correlation length on BH mass was found for whole
galaxy samples dominated by blue galaxies, while there was an indication of BH
mass dependence in the cross-correlation with red galaxies. These results
provides a picture of the environment of AGNs studied in this paper being
enriched with blue starforming galaxies, and a fraction of the galaxies are
being evolved to red galaxies along with the evolution of SMBHs in that system.
