Results 61 to 70 of about 786 (162)

Cassini CAPS‐ELS Observations of Low‐Energy Electron Beams Within Enceladus Mid‐Latitude Flux Tubes

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The electrodynamic interaction between Saturn's magnetosphere and Enceladus accelerates electrons along magnetic field lines. These electrons propagate inside magnetic flux tubes connecting the moon to the giant planet, generating distinctive auroral hiss and auroral footprint signatures, both previously observed by the Cassini spacecraft.
J. Rabia, L. Z. Hadid, N. André, Q. Nénon, T. Chust, D. Pisa, A. Parsec‐Wallis, A. J. Coates, A. M. Rymer   +8 more
wiley   +1 more source

A Statistical Retrieval of Cloud Parameters for the Millimeter Wave Ice Cloud Imager on Board MetOp-SG

IEEE Access, 2017
The meteorological observations from satellites in the microwave domain are currently limited to below 190 GHz. The next generation of European Organization for the Exploitation of Meteorological Satellites Polar System-Second Generation will carry an ...
Die Wang, Catherine Prigent, Filipe Aires, Carlos Jimenez   +3 more
doaj   +1 more source

TRAPPED‐S, a New Environment Model Framework for Saturn: Focus on Radiation‐Specification Model

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract As space agencies contemplate missions to the outer planets' systems and moons, entailing prolonged observations via local orbiters or potential landers, meticulous assessment of the local environment—encompassing radiation and plasma conditions—is paramount for the design of both the platform and scientific payload.
A. Sicard, E. Roussos, K. Dialynas, Y. Hao, Q. Nénon, P. Jiggens, F. L. Johansson, A. Kamran   +7 more
wiley   +1 more source

SPECTROPHOTOMÈTRE INTERFÉRENTIEL EN ASTROPHYSIQUE

Le Journal de Physique Colloques, 1967
Etude des problèmes rencontrés dans l'adaptation d'un étalon Fabry-Perot à un télescope, et des causes d'erreurs particulières dues au défaut d'uniformité d'éclairement des diaphragmes. Présentation de quelques résultats (rapport d'intensité de raies de [O II] dans la nébuleuse d'Orion).
openaire   +1 more source

SuperCam Raman Activities at Jezero Crater, Mars: Observational Strategies, Data Processing, and Mineral Detections During the First 1000 Sols

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The Mars 2020 Perseverance rover introduced Raman spectroscopy to in situ planetary exploration for the first time when it landed in Jezero crater on Mars in February 2021. The SuperCam instrument onboard Perseverance is a multi‐analytical tool capable of acquiring time‐resolved Raman data from Martian targets at standoff distances of a few ...
G. Lopez‐Reyes, J. A. Manrique, E. Clavé, A. Ollila, O. Beyssac, P. Pilleri, S. Bernard, E. Dehouck, M. Veneranda, S. K. Sharma, M. Nachon, J. Aramendia, O. Forni, F. Rull, T. Acosta‐Maeda, A. Brown, S. M. Angel, K. Castro, E. Cloutis, L. Coloma, J. Comellas, D. Delapp, R. Jakubek, S. Julve‐Gonzalez, E. Kelly, J. M. Madariaga, G. Montagnac, I. Poblacion, S. Schröder, S. A. Connell, I. Reyes‐Rodriguez, Z. U. Wolf, S. Maurice, O. Gasnault, S. Clegg, A. Cousin, R. C. Wiens, the SuperCam Raman Working Group and the SuperCam Team   +37 more
wiley   +1 more source

APXS Derived Geochemistry of Shallow Water Lens Bodies Within the Mirador Formation, Gale Crater, Mars—Evidence for Intermittent Wet Periods and Implications for the Water Record

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The Mount Sharp group in Gale crater is typically interpreted to record a progressive change (with increasing elevation) from wetter fluvio‐lacustrine environments to dry, eolian environments. This shift has been linked to orbital evidence for a global change in environmental and depositional conditions leading to an overall drying out of Mars.
C. D. O’Connell‐Cooper, L. M. Thompson, J. G. Spray, S. J. VanBommel, J. A. Berger, R. Gellert, G. Caravaca, D. Fey, M. A. McCraig, N. I. Boyd, A. B. Bryk, W. E. Dietrich, S. Gupta, A. Roberts, A. Yen   +14 more
wiley   +1 more source

Astrophysique théorique, 1964-1988

L’annuaire du Collège de France, 2008
I. Travaux et publications a) Travaux en cours Mes travaux se poursuivent dans les directions suivantes : L’etude et la publication des correspondances de Jerome Lalande (en collaboration avec Mme Simone Dumont, astronome a l’Observatoire de Paris), continuent par l’analyse de la correspondance de Lalande avec ses correspondants de l’Academie de Berlin,
openaire   +2 more sources

Ion Composition and Electron Pitch Angle Variations for Interchange Events in Jupiter's Inner Magnetosphere

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The outward transport of plasma and magnetic fluxes in the gas giant magnetospheres is balanced with a return flow of flux tubes emptied through magnetic reconnection. Evidence of interchange motions between inward and outward moving flux tubes have long been reported around Jupiter and Saturn.
M. Devinat, N. André, G. Vinci, M. Blanc, J. R. Szalay, Z.‐Y. Liu, Q. Nénon, E. Penou, P. Louarn, F. Allegrini, R. W. Ebert, P. W. Valek, F. Bagenal, R. J. Wilson, J.‐Z. Wang, W. S. Kurth, B. H. Mauk, Y. Wang, G. A. DiBraccio, J. E. P. Connerney, S. J. Bolton   +20 more
wiley   +1 more source

LES NEUTRINOS EN ASTROPHYSIQUE

Le Journal de Physique Colloques, 1973
On passe en revue les principaux processus de production de neutrinos en astrophysique ainsi que les premiers résultats négatifs concernant la détection des neutrinos solaires.
openaire   +2 more sources

A Specification Model of Saturn's Plasma Environment

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract We present the first empirical‐based specification model of Saturn's plasma environment based on the analysis of all publicly available plasma moment data sets derived using multiple techniques from Cassini observations made by the Cassini Plasma Spectrometer and the Radio and Plasma Wave Science instrument.
A. Kamran, Q. Nénon, F. L. Johansson, Y. Hao, A. Sicard, E. Roussos, K. Dialynas, P. Jiggens, F. Cipriani   +8 more
wiley   +1 more source