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The Astroparticle and Cosmology (APC) laboratory in Paris gathers researchers (experimentalists, theorists and observers) working in different areas including high-energy astrophysics, cosmology,
gravitation In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the stron ...
, and neutrino physics. The institute was founded in January 2005 and soon moved to new campus of Paris Diderot University in the Paris Rive Gauche area. The laboratory is a "Mixed Research Unit" in French terminology, funded by Paris Diderot University, the Centre national de la recherche scientifique (represented by three of its Institutes: mainly
IN2P3 IN, In or in may refer to: Places * India (country code IN) * Indiana, United States (postal code IN) * Ingolstadt, Germany (license plate code IN) * In, Russia, a town in the Jewish Autonomous Oblast Businesses and organizations * Independ ...
, but also INSU and INP), the Commissariat à l'énergie atomique et aux énergies alternatives, and the
Paris Observatory The Paris Observatory (french: Observatoire de Paris ), a research institution of the Paris Sciences et Lettres University, is the foremost astronomical observatory of France, and one of the largest astronomical centers in the world. Its histor ...
. The first director of the laboratory was Pierre Binetruy (2005-2013). From January 2014 until December 2017 the director was
Stavros Katsanevas Stavros Katsanevas (1953 – 27 November 2022) was a Greek-French astrophysicist who was director of the European Gravitational Observatory, professor (Exceptional Class) at the Université Paris Cité, former director of the AstroParticle and ...
, followed by Sotiris Loucatos, and Antoine Kouchner (since July 2018).


Research activities


Cosmology

This group, headed b
Kenneth Ganga
includes two main areas of research: # Experimental investigation of the cosmic microwave background, including attempts to detect CMB polarization B-modes, which could provide support for the theory of Inflation. Researchers were involved in the Planck space mission and are now active in the
QUBIC experiment QUBIC is a cosmology project to study cosmic inflation by measuring the B-modes of the polarization of the Cosmic Microwave Background (CMB), by observing the sky with a millimeter wave radio telescope interferometer. It uses bolometric interfe ...
, the
Simons Observatory The Simons Observatory is located in the high Atacama Desert in Northern Chile inside the Chajnator Science Preserve, at an altitude of 5,200 meters (17,000 ft). The Atacama Cosmology Telescope (ACT) and the Simons Array are located nearby an ...
, and the LiteBIRD satellite. # Cosmological analysis of large spectroscopic and imaging surveys for the determination of constraints on the nature of dark energy. Researchers are involved in the wide-field observatories aimed at understanding the nature of dark energy: the large field
Baryon Oscillation Spectroscopic Survey The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States. The project began in 2000 a ...
telescope, the Vera C. Rubin Observatory and the Euclid space mission


High-energy astrophysics

Research carried out by this group, headed by Anne Lemière, aims at understanding the violent phenomena of the universe (mostly within
compact stars In astronomy, the term compact star (or compact object) refers collectively to white dwarfs, neutron stars, and black holes. It would grow to include exotic stars if such hypothetical, dense bodies are confirmed to exist. All compact objects ha ...
, neutron stars, or
black holes A black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape it. The theory of general relativity predicts that a sufficiently compact mass can def ...
). The group is engaged in many international projects with telescopes or instruments detecting photons, cosmic rays, or neutrinos. For the observation of # gamma rays, it is involved in the INTEGRAL observatory, the High Energy Stereoscopic System, the
Cherenkov Telescope Array The Cherenkov Telescope Array or CTA is a multinational, worldwide project to build a new generation of ground-based gamma-ray instrument in the energy range extending from some tens of GeV to about 300 TeV. It is proposed as an open observatory ...
, and the
Space Variable Objects Monitor The Space Variable Objects Monitor (SVOM) is a planned small X-ray telescope satellite under development by China National Space Administration (CNSA), Chinese Academy of Sciences (CAS) and the French Space Agency ( CNES), to be launched in th ...
# cosmic rays of ultra-high energy, it is involved in JEM-EUSO # neutrinos, it is involved in the ANTARES and KM3NeT projects collaborations # X-rays, it was involved in the space mission Hitomi


Neutrinos

The research carried out by this group, headed by Davide Franco, is dedicated to understanding neutrino properties is one of the laboratories' main activities. Researchers are involved in studies of the phenomenon of oscillation ( Borexino, Double Chooz) and on future projects addressing the measurement of the neutrino mass hierarchy with atmospheric neutrinos with the deep-sea water Cherenkov telescope Orca and the long-baseline neutrino oscillation project Laguna-LBNO.


Gravitation

This core research of this group led by Stanislav Babak is the direct detection of gravitational waves. The group is involved in both ground-based ( Virgo interferometer) and space-based ( Laser Interferometer Space Antenna and its precursor LISA Pathfinder) instruments.


Theory

This group, headed by Dmitri Semikoz, covers the research topics of the laboratory from a theoretical perspective. It also carries out work on other areas of fundamental physics.


Organization

The staff of the laboratory consists of 75 permanent researchers and over 60 engineers, technicians, and administrative personnel, plus about 125 non-permanent employees (PhD students, postdoctoral fellows, visitors). In addition, the Paris Center for Cosmological Physics directed by George Smoot is also part of the laboratory and one of the three functional centres of the ''Astroparticle Physics European Consortium'' is based here. An "International Associated Laboratory" in astroparticle physics was launched in September 2007. It associates the APC laboratory with the Kavli Institute for Particle Astrophysics and Cosmology (
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is consider ...
).


Evaluation

The laboratory has been evaluated twice by the AERES: in 2008 and in 2013. In the latter evaluation, the lab won excellent scores (A or A+ in all criteria).


Astroparticle Physics European Consortium

''Astroparticle Physics European Consortium'' (APPEC) is a consortium of organizations from European countries that coordinate and fund research in astroparticle physics.


References


External links

*
List of publications by members of the lab
{{authority control Research institutes in France French National Centre for Scientific Research 2005 establishments in France