Liang, Z.-C.; Gizon, L.; Birch, A.; Duvall, T.; Rajaguru, S. P.: Solar meridional circulation from twenty-one years of SOHO/MDI and SDO/HMI observations: Helioseismic travel times and forward modeling in the ray approximation. Astronomy and Astrophysics 619, A99 (2018)
Bhattacharya, J.; Hanasoge, S. M.; Birch, A.; Gizon, L.: Recovery of subsurface profiles of supergranular flows via iterative inversion of synthetic travel times. Astronomy and Astrophysics 607, A 129 (2017)
Felipe, T.; Braun, D. C.; Birch, A. C.: Helioseismic holography of simulated sunspots: dependence of the travel time on magnetic field strength and Wilson depression. Astronomy and Astrophysics 604, A126 (2017)
Gizon, L.; Barucq, H.; Duruflé, M.; Hanson, C. S.; Leguèbe, M.; Birch, A. C.; Chabassier, J.; Fournier, D.; Hohage, T.; Papini, E.: Computational helioseismology in the frequency domain: acoustic waves in axisymmetric solar models with flows. Astronomy and Astrophysics 600, A35 (2017)
Nagashima, K.; Fournier, D.; Birch, A. C.; Gizon, L.: The amplitude of the cross-covariance function of solar oscillations as a diagnostic tool for wave attenuation and geometrical spreading. Astronomy and Astrophysics 599, A111 (2017)
Gizon, L.; Sekii, T.; Takata, M.; Kurtz, D. W.; Shibahashi, H.; Bazot, M.; Benomar, O.; Birch, A. C.; Sreenivasan, K. R.: Shape of a slowly rotating star measured by asteroseismology. Science Advances 2 (11), e1601777 (2016)
Langfellner, J.; Gizon, L.; Birch, A. C.: Spatially resolved vertical vorticity in solar supergranulation using helioseismology and local correlation tracking. Astronomy and Astrophysics 581, A67 (2015)
Recently new, very sensitive observations of the ExoMars Trace Gas Orbiter (TGO) and its instruments NOMAD (Nadir and Occultation for MArs Discovery) an ACS (Atmospheric Chemistry Suite) became available and initiated a number of interesting scientific questions. Some of them are open PhD projects using the MPS General Circulation Model (MPS-GCM).
The Solar Lower Atmosphere and Magnetism (SLAM) group covers many exciting subjects in solar physics, focussing on the development and testing of highly novel solar instrumentation, reduction and analysis of highest quality solar observations, or improving and developing advanced techniques for the analysis of solar observations.
In the "Solar and Stellar Interiors" department, Laurent Gizon, Jesper Schou, Aaron Birch, Robert Cameron and others offer PhD projects in solar physics and astrophysics. Helioseismology and asteroseismology are used as important tools to study the oscillating Sun and stars.
Turbulence plays a very important role in many applications, ranging from geophysics and astrophysics to engineering. In our solar system, turbulence is often driving by thermal effect, rotation, and magnetic field. In this project you will use high-fidelity simulation tools, including direct numerical simulations, data assimilation, and machine learning, to study the physics of turbulence, focusing on convection and dynamos.
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).
Inversion codes are used to aid the detailed interpretation of solar spectro-polarimetric data. This computer code attempts to find the atmospheric structure that produced an observed spectrum by minimizing the difference between the observed spectrum and a Stokes spectrum.
The MPS is one of the leading institutes worldwide in building instruments for solar research, both for ground based observatories as well as for balloon and space-borne missions. Scientists and engineers of MPS conceive new observing methods and develop novel instruments of highest technological complexity. These instruments are built in house, tested, calibrated, and used at the best solar observatories in the world, or delivered to NASA and ESA to be launched to space.