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ENSL

École Normale Supérieure de Lyon
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71 Projects, page 1 of 15
  • Funder: EC Project Code: 236353
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  • Funder: EC Project Code: 750901
    Overall Budget: 185,076 EURFunder Contribution: 185,076 EUR

    Since the discovery of the first exoplanet, a gaseous giant planet, two decades of an extensive planet hunt led to an amazing inventory of close-by planet systems. Among these planets a substantial number are slightly larger than Earth but are still expected to be rocky. No similar object exists in the solar system and little is known about them. One interesting aspect is to determine the habitability of these exotic planets and if life could develop there. It is therefore important to determine what is the structure of the deep interior of these planets and if it can generate a protecting magnetic field. In the proposed project, the fellow plans to develop a set of state-of-the-art ab initio simulations of iron-nickel mixtures to study the properties of these materials at high pressure. These materials are likely to be dominant in the core of Super-Earth but it is unclear if the pressure-temperature conditions are compatible with a solid core surrounded by a liquid and conducting phase as expected to be favorable for magnetic field generation. The fellow will focus on the phase diagram of these mixtures up to 1 TPa. He will also explore the transport properties in order to better constrain the possible scenarios of convection and magnetic field generation. Based on these results, the fellow will build evolution models of Super-Earths to be compared to the discovered exoplanets.

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  • Funder: SNSF Project Code: 134461
    Funder Contribution: 42,240
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  • Funder: EC Project Code: 864965
    Overall Budget: 1,723,660 EURFunder Contribution: 1,723,660 EUR

    One of the most fascinating and challenging question of Modern Astrophysics is: How do planets form? Indeed, micronic dust grains must grow over 30 orders of magnitude in mass to build planet cores. Global numerical simulations of dust grains that couple the dynamics of the particles to their growth/fragmentation and the radiation in the disc are compulsory to understand this process. Yet, this coupling has never been realised, given tremendous difficulties that originate from fundamental physical properties of dusty flows. The evolution of the dust distribution in protoplanetary discs remains therefore very poorly understood. Our novel groundbreaking code is the first to handle non-ideal MHD, radiation and dust with dynamical growth and fragmentation. We can therefore overcome all past difficulties to model gasgrains mixtures in discs consistently. PODCAST is designed to study the different stages of gas and dust evolution in the various regions of the disc, with the main objective of combining these steps in a holistic model for planet formation. We will confront the results directly with observations, unleashing the full potential of the grand instruments ALMA, SPHERE, JWST and SKA.

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  • Funder: EC Project Code: 275519
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