Determining when and where supermassive black hole growth - seen as Active Galactic Nuclei (AGN) - occurs within the evolving galaxy population is vital to understand the physical mechanisms that drive the growth of black holes as well as what triggers periods of AGN activity, and the impact of AGN feedback on galaxy growth. However, linking galaxy and AGN properties is complicated by the...
X-ray surveys of AGN provide direct constraints on the properties of individual AGN, such as their accretion, reflection, and obscuration. Previous AGN population synthesis models have not addressed such constraints self-consistently. Here we use a simulation-based inference (SBI) approach to constrain the geometrical and physical properties of the AGN population. We perform numerical...
I will present the hard ($2.3-5~$keV) X-ray selected sample of sources detected with eROSITA during the first all-sky survey, comprising 5466 X-ray sources. From this catalog, I have produced a large uniform sample of hard-X-ray selected AGN, and characterised them with supporting multi-wavelength astrometry, photometry and spectroscopy. For the 2863 sources within the sky coverage of the DESI...
We report the follow-up observations for hyperluminous quasar candidates discovered in the eFEDS field using SCUBA-2 on JCMT and KOOLS-IFU on the Seimei Telescope. Galaxies whose infrared (IR) luminosity exceeds 10$^{13}$ $L_{\odot}$ have been termed hyper-luminous IR galaxies (HyLIRGs). The IR luminosity can arise from active galactic nucleus (AGN) and star formation (SF) activity. According...
Supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy. However, much less is known about whether dwarf galaxies commonly host SMBHs.
Exploiting the recently published eROSITA X-ray catalogue, we built a sample of actively accreting SMBHs in local dwarf galaxies. This uniformly selected sample of 74 AGN is, to date, one of the largest compilations of...
