Astrophysicist / Writer
j.geach at herts.ac.uk.
Centre for Astrophysics Research, School of Physics, Astronomy & Mathematics, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB, United Kingdom
I am a Royal Society University Research Fellow and Professor of Astrophysics based in the Centre for Astrophysics Research (CAR) at the University of Hertfordshire. I studied Physics at Imperial College London as an undergraduate, and then did my Ph.D. at Durham University under the expert tutelage of Ian Smail. After completing my thesis, I was a post-doc at Durham and Banting Fellow at McGill University before coming to CAR in 2013.
My research generally focuses on the formation and evolution of galaxies and observational cosmology, but I also investigate novel uses of machine learning in astrophysics and explore the application of these techniques in other fields, including medicine and agriculture. I like to dabble. Recently my interest has been in developing new techniques for the exploration and analysis of Earth Observation data. You can see some of this work here.
For a complete record of my research, you can find
an up-to-date
listing of publications and pre-prints at the NASA Astrophysics Data
System. You can also read about some of my research in the
press:
Galactic blow out
Lyman Alpha Blobs: Galaxies Coming of Age in Cosmic Blobs
Herschel Sees Intergalactic Bridge Aglow With Stars
Galaxy Goes Green in Burning Stellar Fuel
Astronomers Map Dark Matter Throughout the Entire Universe
I like trying to break down complex ideas into simple language,
with a goal of explaining the cutting edge of astronomical research in
a way that anyone can understand. I have written two popular science
books, both published
by Reaktion Books:
 
I have written feature articles for Scientific American and Sky & Telescope. I regularly contribute to The Conversation and also write the occasional piece on Medium.