Céline Bœhm
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Céline Bœhm is a Professor of Particle Physics at the
University of Sydney The University of Sydney (USYD), also known as Sydney University, or informally Sydney Uni, is a public research university located in Sydney, Australia. Founded in 1850, it is the oldest university in Australia and is one of the country's si ...
. She works on astroparticle physics and dark matter.


Early life and education

Bœhm studied fundamental physics at the Pierre and Marie Curie University, graduating in 1997. She joined
École Polytechnique École may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * École, Savoi ...
, where she obtained a Master in Engineering in 1998. She earned the highest distinction for a postgraduate diploma in theoretical physics. She completed her PhD at the École normale supérieure in Paris in 2001, working with Pierre Fayet. She worked on supersymmetry, in the 4-body decay of the stop particle. She studied light scalar
top quark The top quark, sometimes also referred to as the truth quark, (symbol: t) is the most massive of all observed elementary particles. It derives its mass from its coupling to the Higgs Boson. This coupling y_ is very close to unity; in the Standard ...
and
supersymmetric In a supersymmetric theory the equations for force and the equations for matter are identical. In theoretical and mathematical physics, any theory with this property has the principle of supersymmetry (SUSY). Dozens of supersymmetric theories ...
dark matter She looked at collisional damping, which considers the impact of dark matter and standard model particles with the cosmic microwave background.


Career and research

In 2001 Bœhm joined
Joseph Silk Joseph Ivor Silk FRS (born 3 December 1942) is a British-American astrophysicist. He was the Savilian Chair of Astronomy at the University of Oxford from 1999 to September 2011. He is an Emeritus Fellow of New College, Oxford and a Fellow ...
at the
University of Oxford , mottoeng = The Lord is my light , established = , endowment = £6.1 billion (including colleges) (2019) , budget = £2.145 billion (2019–20) , chancellor ...
. Here she worked on light dark matter particles which couple to light Z′ bosons. She proposed new candidates for scalar dark matter, in the form of heavy fermions or light gauge bosons. When the SPI spectrometer onboard
INTEGRAL In mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented i ...
identified a 511 keV line in the
Galactic Center The Galactic Center or Galactic Centre is the rotational center, the barycenter, of the Milky Way galaxy. Its central massive object is a supermassive black hole of about 4 million solar masses, which is called Sagittarius A*, a compact ra ...
, Bœhm predicted that this could have been the signature of dark matter. She has continued to search for new signatures of dark matter, including examining the GeV excess in the
Fermi Gamma-ray Space Telescope The Fermi Gamma-ray Space Telescope (FGST, also FGRST), formerly called the Gamma-ray Large Area Space Telescope (GLAST), is a space observatory being used to perform gamma-ray astronomy observations from low Earth orbit. Its main instrument is ...
data. In 2004 Bœhm joined the Laboratoire d'Annecy-le-Vieux de Physique Théorique, where she was promoted to senior lecturer in 2008. She was awarded the
Centre national de la recherche scientifique The French National Centre for Scientific Research (french: link=no, Centre national de la recherche scientifique, CNRS) is the French state research organisation and is the largest fundamental science agency in Europe. In 2016, it employed 31,63 ...
Bronze Medal. She looked at the analysis of the
CoGeNT The CoGeNT experiment has searched for dark matter. It uses a single germanium crystal (~100 grams) as a cryogenic detector for WIMP particles. CoGeNT has operated in the Soudan Underground Laboratory since 2009. Results Their first announ ...
direct detection method, and found that it could have suffered from a large background. In 2015 Boehm was nominated as Fellow of the
Institute of Physics The Institute of Physics (IOP) is a UK-based learned society and professional body that works to advance physics education, research and application. It was founded in 1874 and has a worldwide membership of over 20,000. The IOP is the Physic ...
. She is the
Principal investigator In many countries, the term principal investigator (PI) refers to the holder of an independent grant and the lead researcher for the grant project, usually in the sciences, such as a laboratory study or a clinical trial. The phrase is also often us ...
of the ''Theia'' mission, a space observatory which will allow Bœhm and her team to test the dark matter predictions that arise due to the
Lambda-CDM model The ΛCDM (Lambda cold dark matter) or Lambda-CDM model is a parameterization of the Big Bang cosmological model in which the universe contains three major components: first, a cosmological constant denoted by Lambda (Greek Λ) associated with ...
. Boehm was made an Emmy Noether Fellow at the
Perimeter Institute for Theoretical Physics Perimeter Institute for Theoretical Physics (PI, Perimeter, PITP) is an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada. It was founded in 1999. The institute's founding and major benefactor i ...
in 2016, where she continued to work on dark matter. That year, she was promoted to Professor in the Institute for Particle Physics Phenomenology at
Durham University , mottoeng = Her foundations are upon the holy hills (Psalm 87:1) , established = (university status) , type = Public , academic_staff = 1,830 (2020) , administrative_staff = 2,640 (2018/19) , chancellor = Sir Thomas Allen , vice_chan ...
. She gave a
TED TED may refer to: Economics and finance * TED spread between U.S. Treasuries and Eurodollar Education * ''Türk Eğitim Derneği'', the Turkish Education Association ** TED Ankara College Foundation Schools, Turkey ** Transvaal Education Depa ...
talk, ''The Invisible is All What Matters'', at Durham in 2017. Alongside her work in astroparticle physics, she works on non-crystallographic
Coxeter group In mathematics, a Coxeter group, named after H. S. M. Coxeter, is an abstract group that admits a formal description in terms of reflections (or kaleidoscopic mirrors). Indeed, the finite Coxeter groups are precisely the finite Euclidean refle ...
s. She led the dark matter working package of the
Euclid Consortium The Euclid Consortium is a distance learning educational consortium created in 2005 by the University of Bangui (Central African Republic), the Université Libre Internationale (Belgium), and the International Organization for Sustainable Develo ...
. In 2017 Bœhm spent two months as a visiting professor at
Columbia University Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhatt ...
, as well as working at the Paris Observatory. She proposed using circular polarisation to study dark matter and neutrinos. She joined the
University of Sydney The University of Sydney (USYD), also known as Sydney University, or informally Sydney Uni, is a public research university located in Sydney, Australia. Founded in 1850, it is the oldest university in Australia and is one of the country's si ...
as Head of School for physics in 2018. Bœhm has written for
The Conversation ''The Conversation'' is a 1974 American mystery thriller film written, produced, and directed by Francis Ford Coppola and starring Gene Hackman, John Cazale, Allen Garfield, Cindy Williams, Frederic Forrest, Harrison Ford, Teri Garr, and Robe ...
. She has taken part in Pint of Science.


References

{{DEFAULTSORT:Boehm, Celine Academics of the University of Oxford Academics of Durham University Academic staff of the University of Sydney Particle physicists Dark matter École Polytechnique alumni Fellows of the Institute of Physics Pierre and Marie Curie University alumni École Normale Supérieure alumni Living people 1974 births