3 papers
astro-ph.HE2025
Exploring the X-ray-radio connection for AGN via measurements of the multi-dimensional luminosity function
Clara M. Pennock, James Aird, Cassandra L. Barlow-Hall
We present new methods to quantify the AGN population in terms of a multi-dimensional luminosity function that describes the space density of sources as a function of both X-ray an…
astro-ph.HE2025
Measurements of the z=4-10 X-ray Luminosity Function: the high space density of moderate-luminosity, obscured AGN
C. L. Barlow-Hall, J. Aird
SMBHs are theorised to undergo significant growth in the early Universe, however, the X-ray Luminosity Function (XLF), used as a principal tracer of the SMBH accretion density, lac…
astro-ph.GA2024
X-ray AGN in Boötes: The lack of growth of the most massive black holes since z=4
Paloma Guetzoyan, James Aird, Antonis Georgakakis +5
Supermassive Black Holes (BHs) are known to efficiently grow through gas accretion, but even sustained and intense mass build-up through this mechanism struggles to explain the ass…