Pinfield, D. J.; Keenan, F. P.; Mathioudakis, M.; Phillips, K. H. J.; Curdt, W.; Wilhelm, K.: Evidence for non-Maxwellian electron energy distributions in the solar transition region: Si III line ratios from SUMER. Astrophysical Journal 527, pp. 1000 - 1008 (1999)
Schühle, U.; Curdt, W.; Wilhelm, K.; Solanki, S. K.; Stucki, K.: Signatures of coronal hole spectra between 660 and 1460 Å measured with SUMER on SOHO. Space Science Reviews 87, pp. 299 - 302 (1999)
Wilhelm, K.; Lemaire, P.; Dammasch, I. E.; Hollandt, J.; Schühle, U.; Curdt, W.; Kucera, T.; Hassler, D. M.; Huber, M. C. E.: Solar irradiances of UV and EUV lines during the minimum of the sunspot activity in 1996. Advances in Space Research 24, pp. 229 - 232 (1999)
Wilhelm, K.; Woods, T. N.; Schühle, U.; Curdt, W.; Lemaire, P.; Rottman, G. J.: The solar ultraviolet spectrum from 1200 Å to 1560 Å: A radiometric comparison between SUMER/SOHO and SOLSTICE/UARS. Astronomy and Astrophysics 352, pp. 321 - 326 (1999)
Curdt, W.; Heinzel, P.: Dynamic behavior of the upper solar atmosphere: SUMER/SOHO observations of hydrogen Lyman lines. Astrophysical Journal 503, pp. L95 - L100 (1998)
Feldman, U.; Curdt, W.; Doschek, G. A.; Schühle, U.; Wilhelm, K.; Lemaire, P.: High-temperature lines in SUMER spectra recorded above a bright solar active region. Astrophysical Journal 503, pp. 467 - 474 (1998)
Hollandt, J.; Schühle, U.; Curdt, W.; Dammasch, I. E.; Lemaire, P.; Wilhelm, K.: Solar radiometry with the telescope and vacuum-ultraviolet spectrometer SUMER on the Solar and Heliospheric Observatory (SOHO). Metrologia 35, pp. 671 - 675 (1998)
Lemaire, P.; Emerich, C.; Curdt, W.; Schühle, U.; Wilhelm, K.: Solar H I Lyman α full disk profile obtained with the SUMER/SOHO spectrometer. Astronomy and Astrophysics 334, pp. 1095 - 1098 (1998)
Pinfield, D. J.; Mathioudakis, M.; Keenan, F. P.; Phillips, K. J. H.; Curdt, W.: The O V 1213.9 Å forbidden line in the quiet Sun. Astronomy and Astrophysics 340, pp. L15 - L17 (1998)
Schühle, U.; Brekke, P.; Curdt, W.; Hollandt, J.; Lemaire, P.; Wilhelm, K.: Radiometric calibration tracking of the vacuum-ultraviolet spectrometer SUMER during the first year of the SOHO mission. Applied Optics 37, pp. 2646 - 2652 (1998)
Tu, C.-Y.; Marsch, E.; Wilhelm, K.; Curdt, W.: Ion temperatures in a solar coronal hole observed by SUMER on SOHO. Astrophysical Journal 503, pp. 475 - 482 (1998)
Wilhelm, K.; Lemaire, P.; Dammasch, I. E.; Hollandt, J.; Schühle, U.; Curdt, W.; Kucera, T.; Hassler, D. M.; Huber, M. C. E.: Solar irradiances and radiances of UV and EUV lines during the minimum of the sunspot activity in 1996. Astronomy and Astrophysics 334, pp. 685 - 702 (1998)
Curdt, W.; Feldman, U.; Laming, J. M.; Wilhelm, K.; Schühle, U.; Lemaire, P.: The solar disk spectrum between 660 and 1175 Å (first order) obtained by SUMER on SOHO. Astron. Astrophys. Suppl. Ser. 126, pp. 281 - 296 (1997)
Feldman, U.; Behring, W. E.; Curdt, W.; Schühle, U.; Wilhelm, K.; Lemaire, P.; Moran, T. M.: A coronal spectrum in the 500-1610 Å wavelength range recorded at a height of 21,000 km above the west solar limb by the SUMER instrument on SOHO. Astrophysical Journal, Suppl. Ser. 113, pp. 195 - 219 (1997)
Laming, J. M.; Feldman, U.; Schühle, U.; Lemaire, P.; Curdt, W.; Wilhelm, K.: Electron density diagnostics for the solar upper atmosphere from spectra obtained by SUMER/SOHO. Astrophysical Journal 485, pp. 911 - 919 (1997)
Lemaire, P.; Wilhelm, K.; Curdt, W.; Schühle, U.; Marsch, E.; Poland, A. I.; Jordan, S. D.; Thomas, R. J.; Hassler, D. M.; Vial, J.-C.et al.; Kühne, M.; Huber, M. C. E.; Siegmund, O. H. W.; Gabriel, A.; Timothy, J. G.; Grewing, M.: First results of the SUMER telescope and spectrometer on SOHO: II. Imagery and data management. Solar Physics 170, pp. 105 - 122 (1997)
Dr. Theodosios Chatzistergos receives award by the European Space Weather and Space Climate Association for his research findings on the historical activity of the Sun.
The Zdenĕk Švetska Senior Prize of the Solar Physics Division of the European Physical Society (EPS) recognizes Solanki’s pioneering contributions to solar research.
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).