Andrew R. Liddle (born 9 June 1965) is Professor of

astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the he ...

at the Royal Observatory Edinburgh. Publications include books and over 260 papers. He is a theoretical cosmologist and is interested in understanding the properties of the

Universe The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang theory is the prevailing cosmological description of the development of the universe. A ...

and how these relate to fundamental physical laws.

Research

Liddle's research is on various aspects of

cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', and in 1731 taken up in Latin by German philosophe ...

and astrophysics, and in particular he is interested in the origin and evolution of structure in the Universe, with special focus on models and observational constraints on the

inflationary cosmology In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch lasted from seconds after the conjectured Big Bang singulari ...

, physics of the

cosmic microwave background In Big Bang cosmology the cosmic microwave background (CMB, CMBR) is electromagnetic radiation that is a remnant from an early stage of the universe, also known as "relic radiation". The CMB is faint cosmic background radiation filling all spac ...

and the use of galaxy clusters as cosmological probes. His areas of research include: * The origin and evolution of structure in the Universe * Models of and observational constraints on the inflationary cosmology * Physics of the cosmic microwave background *

Dark energy In physical cosmology and astronomy, dark energy is an unknown form of energy that affects the universe on the largest scales. The first observational evidence for its existence came from measurements of supernovas, which showed that the unive ...

in the Universe. He is involved in several international projects, including the Planck satellite, the Dark Energy Survey and the XMM Cluster Survey. Before his position at the Royal Observatory Edinburgh he was a professor of

University of Sussex , mottoeng = Be Still and Know , established = , type = Public research university , endowment = £14.4 million (2020) , budget = £319.6 million (2019–20) , chancellor = Sanjeev Bhaskar , vice_chancellor = Sasha Roseneil , ...

in Brighton.

Publications

* ''An Introduction to Modern Cosmology'', 2nd edition (pbk), 0-470-84834-0 (hbk), * ''Cosmological Inflation and Large Scale Structure'', (pbk), 0-521-66022-X (hbk), * ''The Oxford Companion to Cosmology'', (pbk), * ''The Primordial Density Perturbation'', (pbk), 978-0-521-82849-9 (hbk), * ''Bayesian Methods in Cosmology'', (hbk).

Awards and honors

In 2015, Liddle was elected a Fellow of the

Royal Society of Edinburgh The Royal Society of Edinburgh is Scotland's national academy of science and letters. It is a registered charity that operates on a wholly independent and non-partisan basis and provides public benefit throughout Scotland. It was established i ...

References

External links

Liddle's personal web page

Liddle's articles on arXiv

Liddle's theme tree on arxiv.org

Liddle's papers relevant to high energy physics
1965 births Living people British physicists 21st-century British astronomers {{UK-astronomer-stub