Käpylä, P. J.; Käpylä, M. J.; Rheinhardt, M.; Olspert, N.; Brandenburg, A.; Warnecke, J.; Lagg, A.; Arlt, R.: Stellar convection models with Kramers-type opacity law. Session 'Fundamental aspects of turbulent convection,' of the DPG-FrÜhjahrstagung, Dresden, Germany (2017)
Käpylä, P. J.; Käpylä, M. J.; Rheinhardt, M.; Olspert, N.; Brandenburg, A.; Warnecke, J.; Lagg, A.; Arlt, R.: Implications of extended subadiabtic layers for stellar dynamos. 2nd Conference on Natural Dynamos, Valtice, Czech Republic (2017)
Lagg, A.: Measurements of Photospheric Magnetic Fields: Spectro-Polarimetry at High Spatial Resolution (invited review). SOLARNET IV: The Physics of the Sun from the Interior to the Outer Atmosphere, Lanzarote, Spain (2017)
Lagg, A.: Measuring quiet-Sun magnetic fields in the photosphere: Recent advances and future perspectives (invited talk). IAPSO - IAMAS -IAGA Joint Assembly, Capetown, South Africa (2017)
Siu-Tapia, A. L.; Lagg, A.; Solanki, S. K.; van Noort, M.; Rempel, M.: Photospheric counter-Evershed flows in the penumbra of sunspots. Solarnet IV Meeting "The physics of the Sun from the interior to the outer atmosphere", Lanzarote, Spain (2017)
Siu-Tapia, A. L.; Lagg, A.; Solanki, S. K.; van Noort, M.; Rempel, M.: Anomalous counter Evershed flows: HINODE observations and MHD simulations. IAU Symposium 327: Fine structure and dynamics of the solar atmosphere, Cartagena de Indias, Colombia (2016)
Lagg, A.: Chromospheric magnetic fields measurements. ISSI workshop on Solar Magnetic Fields: From Measurements towards Understanding, Bern, Switzerland (2015)
Lagg, A.; Gris-Team: Quiet-Sun Magnetism: A New Perspective from GRIS / GREGOR. Coimbra Solar Physics Meeting "Ground-based Solar Observations in the Space Instrumentation Era", Coimbra, Portugal (2015)
Lagg, A.: First Chromospheric (He I 1083 nm) and Photospheric (Fe I 1565 nm) Observations with GREGOR/GRIS. Indo-German Workshop on Solar Astronomy, Bangalore, India (2014)
Lagg, A.; Bernasconi, P.; Katsukawa, Y.; del Toro Iniesta, J.C.; Berkefeld, T.; Solanki, S. K.: SUNRISE III: The Solar Atmosphere in 3D and High Rssolution. 2021 Scientific Ballooning Technologies Workshop, online (2021)
Tapia, A. L. S.; Solanki, S. K.; Lagg, A.; van Noort, M.: ANOMALOUS REVERSED EVERSHED FLOW IN A SUNSPOT PENUMBRA. Sunspot formation: theory, simulations and observations, Stockholm, Sweden (2015)
Analyzing the high spatial resolution solar Ca II H and K emission data obtained by the SUNRISE mission and building a model of other stars more active than the Sun
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 magnetic field in the solar atmosphere exceeds the geomagnetic field strength by four orders of magnitude. It greatly influences the processes of energy transport within the solar atmosphere, and dominates the morphology of the solar chromosphere and corona. Kinetic energy from convective motions in the Sun can be efficiently stored in magnetic fields and subsequently released - to heat the solar corona to several million degrees or to blast off coronal mass ejections.