Results 41 to 50 of about 927 (171)

Bounce Resonance Between ULF Waves and Electrons in the Dayside Outer Magnetosphere

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Resonant interactions between ultra‐low‐frequency (ULF) waves and particles are critical for energy transfer in the Earth's magnetosphere, and have been extensively investigated in the inner magnetosphere. However, resonant processes between ULF waves and electrons in the dayside outer magnetosphere remain largely unexplored.
Zi‐He Zhao, Xing‐Yu Li, Qiu‐Gang Zong, Zhi‐Yang Liu, Xing‐Xin Zhao, Yi‐Xin Sun, Yi‐Xin Hao, Craig Pollock, Christopher T. Russell, Robert E. Ergun, Per‐Arne Lindqvist   +10 more
wiley   +1 more source

Calculated Transition Probabilities for Os VI Spectral Lines of Interest to Nuclear Fusion Research

Atoms
In this work, we present a new set of transition probabilities for experimentally classified spectral lines in the Os VI spectrum. To do this, two independent computational approaches based on the pseudo-relativistic Hartree–Fock, including core ...
Maxime Brasseur, Patrick Palmeri, Pascal Quinet   +2 more
doaj   +1 more source

Le rayonnement thermique en astrophysique [PDF]

Photoniques, 2020
Le rayonnement thermique est une source décisive d’informations pour une science de l’observation comme l’astrophysique. Dominant dans l’infrarouge lointain, il est difficile à mesurer, et nécessite le développement de détecteurs innovants et de techniques cryogéniques de pointe. Mise en œuvre à bord de satellite depuis 40 ans, la mesure du rayonnement
openaire   +2 more sources

Mercury's Eccentric Orbit as a Driver of Significant “Seasonal” Change in Upstream Solar Wind Forcing

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Mercury experiences the most intense and variable solar wind (SW) conditions in the solar system due to its close, eccentric orbit about the Sun. In addition to variation driven by coronal source and solar cycle, the SW arriving at Mercury varies periodically as the planet's heliocentric distance changes by over 50% per orbit.
Ryan M. Dewey, Caitriona Mary Jackman, Mathias Rojo, Lina Z. Hadid, Beatriz Sánchez‐Cano, Charles F. Bowers, Jim M. Raines, Susan T. Lepri, Stefano Livi, Jesse T. Coburn, Sae Aizawa, Yeimy J. Rivera, Weijie Sun, Jiutong Zhao, James A. Slavin, Daniel Heyner, Daragh M. Hollman, Alexander D. Shane   +17 more
wiley   +1 more source

Climatology of thermospheric neutral winds over Oukaïmeden Observatory in Morocco [PDF]

Annales Geophysicae, 2017
In order to explore coupling between the thermosphere and ionosphere and to address the lack of data relating to thermospheric neutral winds and temperatures over the African sector, a new system of instruments was installed at the Oukaïmeden ...
M. Kaab, Z. Benkhaldoun, D. J. Fisher, B. Harding, A. Bounhir, J. J. Makela, A. Laghriyeb, K. Malki, A. Daassou, M. Lazrek   +9 more
doaj   +1 more source

Late‐Stage Debris Flows Eroded Aeolis Mons in Gediz Vallis, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract How the ancient climate of Mars transitioned to its current cold, hyperarid state is recorded by the sedimentary rocks preserved on its surface. Gale crater, the Curiosity rover landing site, is one such location, where the central mountain, Aeolis Mons, preserves an extensive sedimentary record. Curiosity has demonstrated that the Aeolis Mons
Joel M. Davis, Sharon A. Wilson, Rebecca M. E. Williams, Lucy M. Thompson, Gerhard Paar, John A. Grant, Aster Cowart, Alex B. Bryk, Sanjeev Gupta, Steven G. Banham, Claire A. Mondro, Edwin S. Kite, Michael C. Malin, Deirdra Fey, Olivier Gasnault, Stéphane Le Mouélic, Ashwin R. Vasavada   +16 more
wiley   +1 more source

MUSE-DARK

Astronomy & Astrophysics
Context. The core–cusp problem is a key challenge to the Lambda cold dark matter (ΛCDM) model. Stellar feedback and other baryonic processes have been proposed as solutions to reconcile the tension between the predicted cuspy profiles and the observed ...
Ciocan B. I., Bouché N. F., Fensch J., Mercier W., Krajnović D., Richard J., Contini T., Jeanneau A.   +7 more
doaj   +1 more source

Statistical Relationship Between Interplanetary Magnetic Field Conditions and the Helicity Sign of Flux Transfer Event Flux Ropes

Geophysical Research Letters, 2021
Flux transfer events (FTEs) are transient phenomena produced by magnetic reconnection at the dayside magnetopause typically under southward interplanetary magnetic field (IMF) conditions.
R. Kieokaew, B. Lavraud, N. Fargette, A. Marchaudon, V. Génot, C. Jacquey, D. Gershman, B. Giles, R. Torbert, J. Burch   +9 more
doaj   +1 more source

What Observations Would an Energetic Neutral Atom Imager Have Made During the Voyager 2 Flyby of Uranus?

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present large‐scale simulations of energetic neutral atom (ENA) emissions at Uranus from a spacecraft viewpoint. Models of magnetic field, extended hydrogen exosphere, moon‐sourced neutral tori, and proton radiation belt are implemented into a simulator to evaluate the production of ENAs for L $L$ = 1–15.
D. Santos‐Costa, N. André
wiley   +1 more source

An Aeolian Depositional Sequence Shaped by Near‐Surface Water at the Base of the Layered Sulfate Unit, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract The basal strata of the orbitally defined Layered Sulfate unit (LSu) in Gale crater, Mars, marks the end of a major mineralogical transition from clay‐to sulfate‐bearing stratigraphy. This has previously been attributed to a period of significant aridification of Gale's climate. Here, we present ground‐based observations by the Curiosity rover
Amelie L. Roberts, Sanjeev Gupta, Aster Cowart, Lauren A. Edgar, William Rapin, William E. Dietrich, Edwin Kite, Steven G. Banham, Joel M. Davis, Claire A. Mondro, Dave M. Rubin, John P. Grotzinger, William Farrand, Linda Kah, Kevin Lewis, Alexander Bryk, Catherine Weitz, Rachel Y. Sheppard, Gwénaël Caravaca, Stéphane Le Mouélic, Emma R. Harris, Patrick J. Gasda, Aileen Yingst, Deirdra Fey, Jeffrey R. Johnson, Gerhard P. Paar, Abigail A. Fraeman, Ashwin R. Vasavada   +27 more
wiley   +1 more source