Results 51 to 60 of about 177,034 (301)
Solar wind and seasonal influence on ionospheric currents from Swarm and CHAMP measurements [PDF]
, 2018 We present a new climatological model of the ionospheric current system, determined from magnetic measurements taken by the Challenging Minisatellite Payload (CHAMP) and Swarm satellites.
Finlay, C. C. +3 more
core +2 more sources
Universe, 2022 Complexity is a typical feature of space plasmas that may involve the formation of multiscale coherent magnetic and plasma structures. The winding features (pseudo-polarization) of magnetic field fluctuations at different spatial scales are a useful ...
Giuseppe Consolini +6 more
doaj +1 more source
Thinning of field‐aligned currents
Geophysical Research Letters, 1982 It is common to describe the field‐aligned currents associated with auroral arcs in terms of an Alfven wave propagating earthward. Taking account of convection, the wave can be stationary relative to the earth with its normal nearly perpendicular to the field. Far enough ahead of the wave linear theory is valid and here theory is restricted to both the
openaire +1 more source
Excitation of zero-frequency magnetic field-aligned currents by ionospheric heating [PDF]
Annales Geophysicae, 2011 Time-dependent, three-dimensional numerical simulations of the reduced MHD model describing shear Alfvén waves in the magnetosphere provide an interesting prediction superficially similar to results of several ionospheric heating experiments conducted
A. V. Streltsov +3 more
doaj +1 more source
Field-aligned currents in Saturn’s magnetosphere: Observations from the F-ring orbits
, 2018 We investigate the azimuthal magnetic field signatures associated with high‐latitude field‐aligned currents observed during Cassini's F‐ring orbits (October 2016–April 2017).
Bunce, EJ +5 more
core +1 more source
Magnetospheric signatures of ionospheric density cavities observed by cluster [PDF]
, 2015 AJBR ackowledges support from STFC under consolidated grant ST/K000993/1.We present Cluster measurements of large amplitude electric fields corre- lated with intense downward field-aligned currents, observed during a nightside crossing of the auroral ...
Aikio +20 more
core +4 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm
Earth and Planetary Physics, 2023 Geomagnetic storms can result in large magnetic field disturbances and intense currents in the magnetosphere and even on the ground. As an important medium of momentum and energy transport among the solar wind, magnetosphere, and ionosphere, field ...
YuanQiang Chen +5 more
doaj +1 more source
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +1 more source