Search

Speed and efficiency are of the essence and must be tweaked to first produce short-lived (tens of milliseconds) alkali RIB before moving to the ultimate goal of metallic RIB in the region of 100Sn. These target-ion sources are designed to operate in extreme environments, and rely on materials able

Quarks and gluons (named partons) traversing a QCD medium – either quark-gluon plasma but also confined, cold nuclear matter – are expected to lose energy dominantly through gluon radiation, leading to the phenomenon of jet quenching observed in high-energy heavy ion collisions. Understanding quanti

Comets provide unique information on the matter present in the cold outer part of the protoplanetary disk. Insight on the cometary matter composition has been obtained from space missions, but the analyses were either remote in situ analyses (Giotto, Vega, Rosetta), or returned samples that were aff

In spite of numerous studies and significant improvements during the last decades, the message carried out by the first solids formed in the accretion disk is still not clearly understood, limiting our understanding of the solar system early evolution. This project aims at establishing comprehensive

Convergent plate boundaries are the loci of destructive earthquakes, such as along subduction zones or within the Himalayas where fast convergence rates and frequent large earthquakes have attracted numerous studies in the past. The seismic behavior of active faults is to the first-order reasonably

Magnetotactic bacteria (MTB) synthesize magnetite [Fe3O4] or greigite [Fe3S4] nanocrystals within their cell. Although MTB may represent some of the oldest biomineralizing microbial organisms on Earth, their identification in the sedimentary record has remained elusive. In the present project, we ar

The objectives of the project are to answer the following questions: 1/ What is the mass distribution of cold planets up to ~1 Earth mass at the ice line where most planets form? 2/ What is the spatial distribution and abundance of cold planets towards the centre of our Galaxy? 3/ How can we rout

Future galaxy surveys will map the distribution of galaxies and release gigantic precision datasets. A key issue is therefore to identify a few observables in order to optimally extract cosmological information. Because non-Gaussianities inevitably arise due to the highly non-linear equations of gra

The Mesozoic era (-250 Ma to -66 Ma) records some of the highest atmospheric carbon dioxide (CO2) levels in Earth's history. Our knowledge of climatic conditions during this period is based mainly on measurements of the ratio of oxygen 18 to oxygen 16 recorded in marine fossils. However, this ratio

The objective of the SPlaSH project is to exploit the part of the SPIRor Legacy Survey dedicated to the search and characterization of extrasolar planets around M dwarfs. SPIRou, the new near-infrared spectropolarimeter and velocimeter installed at the CFH Telescope, is designed to be a world leader

The most metal-poor stars (less than a thousandth of the Sun's abundance in iron) are also the oldest stars as they are expected to have formed within the first 2 billion years of the age of the universe. However, they are also very rare (less than one star in a thousand) et exceedingly hard to isol

We propose to make a leap in the sensitivity to gravitational waves by quadrupling the observation bandwidth available at the Nançay Radio Observatory, to complete this effort by allowing an effective participation of France in the MeerTime consortium for the exploitation of MeerKAT (South Africa),

The CO2 clouds form out of the main constituent of the Martian atmosphere in the winter poles in the troposphere and in the mesosphere at tropical latitudes. Second only to Earth’s atmosphere, Martian atmosphere is among the most observed atmospheres in our Solar System, yet these clouds were only d

New detector technologies are being developed for future particle colliders, and in particular for the upgraded version of the Large Hadron Collider (LHC), called the High-Luminosity LHC. Among these new detectors, a particularly innovative type of detectors are called high-granular calorimeters. Th

The weak interaction is described today by two contributions, vector and axial-vector. Two other contributions, scalar and tensorial, are allowed by theory, but are not necessary to describe the observation. Limits are then given for these «exotic« contributions. The goal of this project is to impro

What makes a planet habitable? This question drives scientific enquiry and human curiosity, and links many domains in geo-astro-bio-sciences. In addition to the stability of liquid water, the availability of the volatile elements (C-O-H-S-N), which dominate surficial biochemical, climatic, and geoch

This project tackles the problem of the transport of angular momentum (AM) in stellar interiors, which is one of the most challenging issues faced today by stellar physics. Our poor understanding of the AM redistribution inside stars is a barrier to the modeling of stellar formation and evolution. T

A more general theory than the Standard Model (SM) of Particle Physics should exist to describe various phenomena unexplained in SM. Direct searches for New Physics (NP) have been unsuccessful until now. The project VBStime propose to indirectly probe NP through the study of vector boson scattering

The question of how planets form has always been a challenge in planetary science. After decades of progress, perhaps, the most obscure phase of this process is how dust accretes in a gas-dominated protoplanetary disk to form the planetesimals, the building blocks of planets. Did planetesimals form

Large continental earthquakes often produce a complex surface rupture pattern, including multiple strands, jogs, or deformation along secondary faults. Such variability of the surface ruptures signs similar complexity happening at depth, where earthquake propagates along complex faults. Although sur

The lambda cold dark matter (LCDM) scenario implies the structuring of DM on subgalactic scales. This may lead to tensions with observational constraints known as the core-cusp and subhalo problems, while this could also help discover or exclude DM particle candidates. The Milky Way (MW) is a perfec

The quantum electrodynamics theory (QED) predicts that the vacuum optical refractive index is modified when the vacuum is stressed by intense electromagnetic fields. The vacuum is expected to be a nonlinear optical medium, much like other standard optical media. This effect has never been observed e

Large subduction earthquakes occur just below densely populated coastal areas and are therefore the source of very high risks for these regions. Among them, South America is one of the most seriously threatened. Its western coast is formed all along by the longest and most active known subduction zo

Europe has just launched the construction of the largest ground-based telescope: the ELT. In operation by 2024, this 40m giant willopen a new era in astronomy. It will answer fundamental questions from the search and characterization of extra-solar planets (the ultimate goal being the exo-earth ima