Boattini, A.; D'Abramo, G.; Scholl, G.; Hainaut, H.; Boehnhardt, H.; West, R.; Carpino, M.; Hahn, G.; Michelsen, R.; Forti, G.et al.; Pravec, P.; Valsecchi, G. P.; Asher, D. J.: Near-Earth asteroid search and follow-up beyond the 22nd magnitude: A pilot program with ESO telescopes. Astronomy and Astrophysics 418, pp. 743 - 750 (2004)
de Bergh, C.; Boehnhardt, H.; Barucci, A.; Lazzarin, A.; Fornasier, S.; Romon-Martin, J.; Tozzi, G. P.; Doressoundiram, A.; Dotto, E.: Aqueous altered silicates at the surface of two Plutinos? Astronomy and Astrophysics 416, pp. 791 - 798 (2004)
Delsanti, A.; Hainaut, O.; Jourddeuil, E.; Meech, K. J.; Boehnhardt, H.; Barrera, L.: Simultaneous visible and near-IR photometric study of Kuiper Belt Object surfaces with the ESO Very Large Telescopes. Astronomy and Astrophysics 417, pp. 1145 - 1158 (2004)
Fornasier, S.; Doressoundiram, A.; Tozzi, G. P.; Barucci, A.; Boehnhardt, H.; de Bergh, C.; Delsanti, A.; Davies, J.; Dotto, E.: ESO Large Program on physical studies of Transneptunian Objects and Centaurs: Final results of the visible spectrophotometric observations. Astronomy and Astrophysics 421, pp. 353 - 363 (2004)
Lara, L. M.; Rodrigo, R.; Tozzi, G. P.; Boehnhardt, H.; Leisy, P.: The spectrum of Comet C/1999 H1 (Lee) between 0.6 and 1 micron. Astronomy and Astrophysics 420, pp. 371 - 382 (2004)
Lara, L. M.; Tozzi, G. P.; Boehnhardt, H.; D'Martino, M.; Schulz, R.: Gas and Dust in Comet C/2000 WM1 during its closest approach to Earth: Optical imaging and long-slit spectroscopy. Astronomy and Astrophysics 422, pp. 717 - 729 (2004)
Schulz, R.; Stüwe, J. A.; Boehnhardt, H.: Rosetta target Comet 67P/Churyumov-Gerasimenko: Post-perihelion gas and dust production rates. Astronomy and Astrophysics 422 (1), pp. L19 - L21 (2004)
Schütz, O.; Boehnhardt, H.; Pantin, E.; Sterzik, M.; Els, S.; Hahn, J.; Henning, T.: A search for circumstellar dust disks with ADONIS. Astronomy and Astrophysics 424, pp. 613 - 618 (2004)
Tozzi, G. P.; Lara, L. M.; Kolokolova, L.; Boehnhardt, H.; Licandro, J.; Schulz, R.: Sublimating components in the coma of Comet C/2000 WM1 (LINEAR). Astronomy and Astrophysics 424, pp. 325 - 330 (2004)
Schulz, R.; Alexander, C.; Boehnhardt, H.; Glassmeier, K.-H. (Eds.): Rosetta-ESA's Mission to the Origin of the Solar System. Springer Press, Heidelberg (2009)
Barucci, M. A.; Boehnhardt, H.; Cruikshank, D. P.; Morbidelli, A. (Eds.): The Solar System Beyond Neptune. University of Arizona Press, Tucson, USA (2008)
Boehnhardt, H.: Die Planeten und ihre Monde. In: Abriss der Astronomie, pp. 104 - 128 (Eds. Röser, H.-J.; Tscharnuter, W.). Wiley-VCH Verlag, Berlin (2012)
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.
First icy cold, then midnight sun: at the Arctic Circle, the team will prepare the next flight of the balloon-borne solar observatory - and hopes for solar fireworks.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.
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.