= Daniel J. Mortlock
{c}
<Daniel J. Mortlock> works on statistical inference in <astrophysics>. He led the 2011 report of the <quasar> ULAS J1120+0641 at <cosmological redshift> $z=7.085$.
The observation connected two questions about the early universe: how a very massive <black hole> could already have grown, and how much of the surrounding intergalactic <gas> remained neutral. The paper interpreted the small ionized region and the absorption profile as evidence about <cosmic reionization>. Its quoted age and <black hole> <mass> are inferences within the adopted physical model, alongside the measured <radiation spectrum>.<A luminous quasar at a redshift of z = 7.085 by Daniel J. Mortlock and collaborators>[Abstract: redshift, inferred black-hole mass, ionized near zone and suggested neutral intergalactic fraction]{ref}
\Image[https://profiles.imperial.ac.uk/d.mortlock/thumbnail]
{title=Portrait of <Daniel J. Mortlock>}
{source=https://profiles.imperial.ac.uk/d.mortlock}
{width=240}
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