Results 71 to 80 of about 72,461 (205)

Detection of Equatorial Plasma Bubbles Using the COSMIC‐2 Rate of TEC Index

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Equatorial plasma bubbles (EPBs) are large‐scale plasma depletion structures that can disrupt Global Navigation Satellite Systems (GNSS) and other space‐based technologies. Several instruments have been employed to study EPB dynamics, with Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data standing out as valuable parameters
Ana L. Christovam, Fabricio S. Prol, Marcio T. A. H. Muella   +2 more
wiley   +1 more source

Mode analysis of numerical geodynamo models

, 2011
It has been suggested in Hoyng (2009) that dynamo action can be analysed by expansion of the magnetic field into dynamo modes and statistical evaluation of the mode coefficients.
Aubert, Brandenburg, Busse, Christensen, Christensen, Christensen, Christensen, Christensen, Courvoisier, D. Schmitt, Dormy, Driscoll, Gissinger, Glatzmaier, Glatzmaier, Holme, Hoyng, Hubbard, Hughes, Hulot, Kageyama, Kaiser, Kuang, Kutzner, Le Mouël, Lhuillier, M. Schrinner, Olson, P. Hoyng, Pétrélis, Rheinhardt, Roberts, Sarson, Schrinner, Schrinner, Schrinner, Schrinner, Schrinner   +37 more
core   +2 more sources

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Magnetic fields with random initial conditions in discs with Kepler rotation curve

Open Astronomy, 2023
Magnetic fields of various astrophysical objects are described using the dynamo mechanism. Corresponding equations in the three-dimensional case are quite difficult to be solved. So, the two-dimensional models can be useful for such problems.
Grachev Denis A., Mikhailov Evgeny A., Zhikhareva Ekaterina N.   +2 more
doaj   +1 more source

A Hierarchical Bayesian Model for the Global Holocene Geomagnetic Field

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract We present a hierarchical Bayesian model of the global geomagnetic field for the last 8,000 years. The model is built solely with thermoremanent records, which include archeomagnetic and volcanic data. Building upon previous work, this model includes fewer approximations and treats model hyperparameters as probabilistic variables.
M. A. Schanner, S. Panovska, M. Korte
wiley   +1 more source

Nonlinear astrophysical dynamos - Bifurcation of steady dynamos from oscillating dynamos

The Astrophysical Journal, 1978
The nonlinear dynamo wave equation, which has been formulated to explore oscillating dynamos, is found also to have steady magnetic field condfigurations as its stable solutions. The solutions of the nonlinear wave equation, integrated numerically as the initial-boundary-value problem in the rotating spherical geometry, eventually bifurcate into a ...
openaire   +1 more source

Membrane lipid composition modulates the organization of VDAC1, a mitochondrial gatekeeper

Communications Biology
VDACs, the most abundant proteins in the outer mitochondrial membrane (MOM), are crucial for mitochondrial physiology. VDAC regulate metabolite and ion exchange, modulate calcium homeostasis, and play roles in numerous cellular events such as apoptosis ...
Elodie Lafargue, Jean-Pierre Duneau, Nicolas Buzhinsky, Pamela Ornelas, Alexandre Ortega, Varun Ravishankar, James Sturgis, Ignacio Casuso, Lucie Bergdoll   +8 more
doaj   +1 more source

Impact Plasma Amplification of the Ancient Mercury Magnetic Field

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Spacecraft measurements of Mercury indicate that it has a core dynamo with a surface field of 200–800 nT. These data also indicate that the northern hemisphere crust contains remanent magnetization likely produced by an ancient magnetic field. The inferred magnetization intensity is consistent with a wide range of paleofield strengths (0.2–50 ...
Isaac S. Narrett, Rona Oran, Yuxi Chen, Katarina Miljković, Gábor Tóth, Catherine L. Johnson, Benjamin P. Weiss   +6 more
wiley   +1 more source

The effect of a meridional flow on Parker's interface dynamo

, 2004
Parker's interface dynamo is generalized to the case when a homogeneous flow is present in the high-diffusivity (upper) layer in the lateral direction (i.e. perpendicular to the shear flow in the lower layer).
A. Kerekes, Basu, Charbonneau, Choudhuri, Dikpati, Dikpati, Hathaway, K. Petrovay, Kosovichev, Makarov, Markiel, Mason, Moss, Parker, Petrovay, Petrovay, Phillips, Tobias, Wang, Weiss   +19 more
core   +2 more sources

Interplay between high‐energy quenching and state transitions in Chlamydomonas reinhardtii: a single‐cell approach

New Phytologist, Volume 250, Issue 4, Page 2689-2705, May 2026.
Summary Studying cell‐to‐cell heterogeneity is essential to understand how unicellular organisms respond to stresses. We introduce a single‐cell analysis framework that enables the study of intercellular heterogeneity of photosynthetic traits, particularly their interactions within individual cells that have identical genotypes, cellular contexts and ...
Aliénor Lahlou, Marcelo Orlando, Sandrine Bujaldon, William Gaultier, Eliora Israelievitch, Peter Hanappe, Thomas Le Saux, Ludovic Jullien, David Colliaux, Benjamin Bailleul   +9 more
wiley   +1 more source