Results 81 to 90 of about 1,320 (193)

Magnetic Field Variations in Interplanetary Space [PDF]

, 1970
Magnetic field variations and structures in interplanetary space are described and related to the sun. Discrete flare-related effects in the interplanetary medium occur within a large-scale interplanetary sector pattern related to a solar sector pattern that is ordered over a large extent in heliographic latitude and longitude.
openaire   +1 more source

Photochemical effects of Mars‐like UV irradiation on carboxylic acids in carbonaceous chondrites and expectations for abiotic background organics on Mars

Meteoritics &Planetary Science, Volume 61, Issue 10, Page 2445-2465, October 2026.
Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner, J. C. Aponte, A. C. Schuerger, D. I. Foustoukos, F. Seguin, M. B. Wilhelm, G. Cooper, A. J. Williams   +7 more
wiley   +1 more source

Contribution of Alfvénic Waves on the Formation and Deflection of Switchbacks: Insights from Two Decades of WIND Spacecraft Data

The Astrophysical Journal Letters
Switchbacks, characterized by large-angle deflections of the local interplanetary magnetic field relative to the background, are frequently observed throughout the heliosphere and play a crucial role in the solar wind dynamics.
Hui Li, Fanzhuo Dai, Chi Wang, Wence Jiang, Haoyu Li   +4 more
doaj   +1 more source

Solar and Interplanetary Magnetic Fields and Plasmas [PDF]

Highlights of Astronomy, 1968
AbstractA few recent observations of interplanetary fields and plasmas are discussed, including the evolution over several years of the longitudinal sector pattern, the corotating filamentary structure that exists within the sectors, guiding of solar cosmic rays along such magnetic filaments, a field-aligned thermal anisotropy of the plasma, and a ...
openaire   +2 more sources

Reconfiguration of Mercury's Exosphere During Strong Space Weather Events

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Mercury is exposed to various space weathering processes, which alter the surface and cause emission of atoms and molecules into the exosphere. The exosphere thus allows remote insights into the surface composition and erosion processes, with the emission of refractory elements such as Ca and Mg typically being dominated by micrometeoroid ...
P. S. Szabo, S. R. Carberry Mogan, A. R. Poppe, S. Fatemi, W. J. Sun, J. T. Zhao   +5 more
wiley   +1 more source

Surface Waves at Switchback Boundaries in the Young Solar Wind from Parker Solar Probe Observations

The Astrophysical Journal
Switchbacks (SBs) are localized magnetic field deflections in the solar wind, marked by abrupt changes in the magnetic field direction relative to the ambient solar wind.
Kyung-Eun Choi, Oleksiy V. Agapitov, Nina Bizien, Thierry Dudok de Wit, Lucas Colomban   +4 more
doaj   +1 more source

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed, O. Agiwal, L. Moore, I. Mueller‐Wodarg, J. D. Huba, C. Martinis, T. Stallard, H. Melin   +7 more
wiley   +1 more source

Proton Temperature and Density Variations in Linear Magnetic Holes in the Solar Wind

The Astrophysical Journal
Linear magnetic holes (LMHs) are pressure-balanced structures characterized by reduced magnetic pressure and compensatory thermal pressure enhancements, driven by proton temperature and/or density variations.
RuiHui Yu, Xin Wang, Hua Zhang, Yu Zhang
doaj   +1 more source

Conjugate auroras and the interplanetary magnetic field [PDF]

Journal of Geophysical Research: Space Physics, 1997
Earlier results from analyses of auroral all‐sky data obtained on several series of conjugate flights along the College, Alaska, magnetic meridian are reevaluated, and it is suggested that while the diffuse aurora is conjugate, the discrete aurora is nonconjugate but still on closed field lines.
openaire   +1 more source

IMF By‐Controlled Dawn–Dusk and Hemispheric Asymmetries of Kelvin–Helmholtz Waves and Reconnection Geometry Under Negative Dipole Tilt

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Along with magnetic reconnection, Kelvin‐Helmholtz (KH) waves are the main mechanisms controlling the solar wind‐magnetosphere interaction, enabling plasma transport into the magnetosphere due to secondary reconnection, diffusion and wave‐particle interactions.
L. Holappa, K. Nykyri, J. Laitinen, B. Burkholder   +3 more
wiley   +1 more source