Böning, V. G. A.; Birch, A.; Gizon, L.; Duvall, T.: Helioseismological determination of the subsurface spatial spectrum of solar convection: Demonstration using numerical simulations. Astronomy and Astrophysics 649, A59 (2021)
Hanson, C. S.; Duvall, T.; Birch, A.; Gizon, L.; Sreenivasan, K. R.: Solar east-west flow correlations that persist for months at low latitudes are dominated by active region inflows. Astronomy and Astrophysics 644, A103 (2020)
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)
Couvidat, S.; Schou, J.; Hoeksema, J. T.; Bogart, R. S.; Bush, R. I.; Duvall, T. L.; Liu, Y.; Norton, A. A.; Scherrer, P. H.: Observables processing for the Helioseismic and Magnetic Imager instrument on the Solar Dynamics Observatory. Solar Physics 291, pp. 1887 - 1938 (2016)
Duvall, T.: Flows in the convection zone with particular relevant to the dynamo. NASA LWS Workshop on Solar Dynamo Frontiers: Helioseismology, 3D Modeling, and Data Assimilation, Boulder, Colorado, USA (2015)
Poulier, P.-L.; Gizon, L.; Fournier, D.; Duvall, T.: On the validity of the frozen-in approximation for acoustic wave propagation through solar granulation. XXXth General Assembly of the International Astronomical Union, Vienna, Austria (2019)
Nagashima, K.; Duvall, T.; Birch, A. C.; Gizon, L.: Comparison between time-distance and ring-diagram helioseismology measurements of subsurface convective flows. Annual Meeting of the Astronomische Gesellschaft 2017, Göttingen, Germany (2017)
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).
The Sun’s planets and small objects have undergone substantial evolution. Deciphering the history of our cosmic home is not a simple task even though we now have access to a multitude of data gathered by space missions, remote observations, and laboratory studies of diverse samples. A significant fraction of materials available for the study of planetary bodies come from meteorites.
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.
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.