Lamy, P. L.; Toth, I.; Jorda, L.; Groussin, O.; A'hearn, M. F.; Weaver, H. A.: The nucleus of Comet 22P/Kopff and its inner coma. Icarus 156 (2), pp. 442 - 455 (2002)
Thomas, N.; Eggers, S.; Ip, W.-H.; Lichtenberg, G.; Fitzsimmons, A.; Jorda, L.; Keller, H. U.; Williams, I. P.; Hahn, G.; Rauer, H.: Observations of the trans-neptunian objects 1993 SC and 1996 TL66 with the Infrared Space Observatory. Astrophysical Journal 534, pp. 446 - 455 (2000)
Thomas, N.; Jorda, L.; Markiewicz, W. J.: Effect of diffuse sky brightness on the spectrophotometry of rough Martian surfaces. Journal Geophysical Research 105 (E11), pp. 26739 - 26744 (2000)
Arpigny, C.; Rauer, H.; Manfroid, J.; Hutsemékers, D.; Jehin, E.; Crovisier, J.; Jorda, L.: Production and kinematics of sodium atoms in the coma of comet Hale-Bopp. Astronomy and Astrophysics 334, pp. L53 - L56 (1998)
Lamy, P. L.; Toth, I.; Jorda, L.; Weaver, H. A.; A'Hearn, M. F.: The nucleus and inner coma of comet 46P/Wirtanen. Astronomy and Astrophysics 335, pp. L25 - L29 (1998)
Rodionov, A. V.; Jorda, L.; Jones, G. H.; Crifo, J. F.; Colas, F.; Lecacheux, J.: Comet Hyakutake Gas Arcs: First Observational Evidence of Standing Shock Waves in a Cometary Coma. Icarus 136, pp. 232 - 267 (1998)
de Laverny, P.; Geoffray, H.; Jorda, L.; Kopp, M.: Long-term UBVRI monitoring of 12 southern hemisphere Long Period Variables. Astronomy and Astrophysics, Suppl. Ser. 122, pp. 415 - 432 (1997)
Jorda, L.; Rembor, K.; Lecacheux, J.; Colom, P.; Colas, F.; Frappa, E.; Lara, L.: The rotational parameters of Hale-Bopp from observations of the dust jets at Pic du Midi Observatory. Earth, Moon and Planets 77, pp. 167 - 180 (1997)
Wink, J.; Bockelée-Morvan, D.; Despois, D.; Colom, P.; Biver, N.; Crovisier, J.; Gérard, E.; Lellouch, E.; Davies, J. K.; Dent, W. R. F.et al.; Jorda, L.: Evidences for extended sources and temporal modulations in molecular observations of C/1995 O1 (Hale-Bopp) at the IRAM interferometer. Earth, Moon and Planets 78, p. 63 - 63 (1997)
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.