Müller, B.; Hohage, T.; Fournier, D.; Gizon, L.: Quantitative passive imaging by iterative holography: the example of helioseismic holography. Inverse Problems 40, p. 045016 (2024)
Fournier, D.; Gizon, L.; Hyest, L.: Viscous inertial modes on a differentially rotating sphere: Comparison with solar observations. Astronomy and Astrophysics 664, p. A6 (2022)
Poulier, P.-L.; Liang, Z.-C.; Fournier, D.; Gizon, L.: Contribution of flows around active regions to the north-south helioseismic travel-time measurements. Astronomy and Astrophysics 664, p. A189 (2022)
Kostogryz, N. M.; Fournier, D.; Gizon, L.: Modelling continuum intensity perturbations caused by solar acoustic oscillations. Astronomy and Astrophysics 654, A1 (2021)
Barucq, H.; Faucher, F.; Fournier, D.; Gizon, L.; Pham, a. H.: Efficient and accurate algorithm for the full modal green's kernel of the scalar wave equation in helioseismology. SIAM Journal on Applied Mathematics 80 (6), pp. 2657 - 2683 (2020)
Gizon, L.; Fournier, D.; Albekioni, M.: Effect of latitudinal differential rotation on solar Rossby waves: Critical layers, eigenfunctions, and momentum fluxes in the equatorial β plane. Astronomy and Astrophysics 642, A178 (2020)
Goddard, C.; Birch, A.; Fournier, D.; Gizon, L.: Predicting frequency changes of global-scale solar Rossby modes due to solar cycle changes in internal rotation. Astronomy and Astrophysics 640, L10 (2020)
Fournier, D.; Hanson, C. S.; Gizon, L.; Barucq, H.: Sensitivity kernels for time-distance helioseismology: Efficient computation for spherically symmetric solar models. Astronomy and Astrophysics 616, A 156 (2018)
Pourabdian, M.; Fournier, D.; Gizon, L.: Comparison of Travel-Time and Amplitude Measurements for Deep-Focusing Time–Distance Helioseismology. Solar Physics 293, 66 (2018)
Pourabdian, M.; Gizon, L.; Hohage, T.; Fournier, D.; Hanson, C. S.: Comparison of full-waveform and travel-time inversions in helioseismology. 14th International Conference on Mathematical and Numerical Aspects of Wave Propagation (WAVES2019), Vienna, Austria (2019)
Gizon, L.; Fournier, D.; Hohage, T.: Problems in computational helioseismology. Workshop: Computational Inverse Problems for Partial Differential Equations , Mathematical Research Institute, Oberwolfach, Germany (2017)
Yang, D.; Gizon, L.; Fournier, D.; Lindsey, C.: Improved helioseismic imaging of the farside. Dynamics of the Sun and Stars: Honoring the Life and Work of Michael J. Thompson,, Boulder, USA (2019)
Pourabdian, M.; Gizon, L.; Hohage, T.; Fournier, D.; Hanson, C. S.: Optimal averaging for helioseismic measurements using the singular value decomposition. XXXth General Assembly of the International Astronomical Union, Vienna, Austria (2019)
The Planetary Plasma Environments group (PPE) has a strong heritage in the exploration of planetary magnetospheres and space plasma interactions throughout the solar system. It has contributed instruments to several past missions that flew-by or orbited Jupiter (Galileo, Cassini, Ulysses). The PPE participates in the JUICE mission by contributing hardware and scientific expertise to the Particle Environment Package (PEP).
Application deadline 1 October 2024. PhD projects in planetary science, solar and stellar physics, solar magnetism, heliophysics, helioseismology, asteroseismology, ...
First Light for Sunrise III: the first tests with real sunlight were successful. The balloon-borne solar observatory should be ready for launch at the end of May.
In analyzing solar observations from the 19th century, scientists are turning to amateur researchers for help. The project will allow to better understand the history of our star.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.