Borrero, J. M.; Solanki, S. K.; Bellot Rubio, L. R.; Lagg, A.; Mathew, S. K.: On the fine structure of sunspot penumbrae - I. A quantitative comparison of two semiempirical models with implications for the Evershed effect. Astronomy and Astrophysics 422, pp. 1093 - 1104 (2004)
Bruls, J. H. M. J.; Solanki, S. K.: Apparent solar radius variations - The influence of magnetic network and plage. Astronomy and Astrophysics 427 (2), pp. 735 - 743 (2004)
Krivov, A. V.; Krivova, N. A.; Solanki, S. K.; Titov, V. B.: Towards understanding the β Pictoris dust stream. Astronomy and Astrophysics 417, pp. 341 - 352 (2004)
Krivova, N. A.; Solanki, S. K.: Effect of spatial resolution on estimating the Sun's magnetic flux. Astronomy and Astrophysics 417, pp. 1125 - 1132 (2004)
Krivova, N. A.; Solanki, S. K.: Solar variability and global warming: A statistical comparison since 1850. Advances in Space Research 34, pp. 361 - 364 (2004)
Lagg, A.; Woch, J.; Krupp, N.; Solanki, S. K.: Retrieval of the full magnetic vector with the He I multiplet at 1083 nm. Maps of an emerging flux region. Astronomy and Astrophysics 414, pp. 1109 - 1120 (2004)
Loukitcheva, M.; Solanki, S. K.; Carlsson, M.; Stein, R. F.: Millimeter observations and chromospheric dynamics. Astronomy and Astrophysics 419, pp. 747 - 756 (2004)
Mathew, S. K.; Solanki, S. K.; Lagg, A.; Collados, M.; Borrero, J. M.; Berdyugina, S.: Thermal-magnetic relation in a sunspot and a map of its Wilson depression. Astronomy and Astrophysics 422, pp. 693 - 701 (2004)
Ning, Z.; Innes, D. E.; Solanki, S. K.: Line profile characteristics of solar explosive event bursts. Astronomy and Astrophysics 419, pp. 1141 - 1148 (2004)
Preuss, O.; Haugan, M. P.; Solanki, S. K.; Jordan, S.: An astronomical search for evidence of new physics: Limits on gravity-induced birefringence from the magnetic white dwarf RE J0317-853. Physical Review D 70 (6), 067101 (2004)
Preuss, O.; Schüssler, M.; Holzwarth, V.; Solanki, S. K.: Distribution of magnetically confined circumstellar matter in oblique rotators. Astronomy and Astrophysics 417, pp. 987 - 992 (2004)
Raouafi, N.-E.; Mancuso, S.; Solanki, S. K.; Inhester, B.; Mierla, M.; Stenborg, G.; Delaboudiniere, J. P.; Benna, C.: Shock wave driven by an expanding system of loops. Astronomy and Astrophysics 424 (3), pp. 1039 - 1048 (2004)
Raouafi, N.-E.; Solanki, S. K.: Effect of the electron density stratification on off-limb OVI line profiles: How large is the velocity distribution anisotropy in the solar corona? Astronomy and Astrophysics 427 (2), pp. 725 - 733 (2004)
Shelyag, S.; Schüssler, M.; Solanki, S. K.; Berdyugina, S.; Vögler, A.: G-band spectral synthesis and diagnostics of simulated solar magneto-convection. Astronomy and Astrophysics 427, pp. 335 - 343 (2004)
Solanki, S. K.; Preuss, O.; Haugan, M.; Gandorfer, A.; Povel, H. P.; Steiner, P.; Stucki, K.; Bernasconi, P. N.; Soltau, D.: Solar constraints on new couplings between electromagnetism and gravity. Physical Review D 69, 062001 (2004)
Solanki, S. K.; Usoskin, I. G.; Kromer, B.; Schüssler, M.; Beer, J.: Unusual activity of the Sun during recent decades compared to the previous 11,000 years. Nature 431 (7012), pp. 1084 - 1087 (2004)
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).
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.