Results 41 to 50 of about 860 (182)
Are Nonthermal Velocities in Active Region Coronal Loops Anisotropic?
The Astrophysical Journal, 2023 We have measured line widths in active region coronal loops in order to determine whether the nonthermal broadening is anisotropic with respect to the magnetic field direction. These nonthermal velocities are caused by unresolved fluid motions.
Michael Hahn +2 more
doaj +1 more source
Space Weather, Volume 24, Issue 3, March 2026.Abstract The May 2024 geomagnetic storm, one of the most intense events of Solar Cycle 25 to date, caused widespread disruptions in aviation operations, particularly for polar and high‐latitude routes. This study quantifies the operational and economic impacts of the storm on 12 selected transatlantic flights between North America and Europe.
Jie Li +5 more
wiley +1 more source
Extended Lead‐Time Geomagnetic Storm Forecasting With Solar Wind Ensembles and Machine Learning
Space Weather, Volume 24, Issue 3, March 2026.Abstract Geomagnetic storms are large disruptions of the magnetosphere, which can impact satellites, communications systems, and power grids, causing significant technological and economic impacts. Current forecasting models utilize L1 satellite data, constraining lead time to a few hours, often insufficient for effective mitigation. We investigate how
M. Billcliff +6 more
wiley +1 more source
Coronal Heating from Alfvén Wave Turbulence in Solar Coronal Loops
, 2020 This work is supported by the NSF-REU Solar Physics program at SAO, grant number AGS-1850750.
openaire +1 more source
New Zealand Journal of Agricultural Research, Volume 69, Issue 1, February 2026.The objective of this study was to evaluate body development, growth performance, ingestive behavior, and physiological responses of Nelore and crossbred calves during the cow‐calf phase. Thirty beef calves were divided into four groups according to their genotype: Nelore (NE; eight animals), Nelore × Senepol (NS; eight animals), Nelore × Montana (NM ...
Lidianny S. Amorim +9 more
wiley +1 more source
A new paradigm for solar coronal heating
EPL (Europhysics Letters), 2009 The solar coronal heating problem refers to the question why the temperature of the Sun's corona is more than two orders of magnitude higher than that of its surface. Almost 70 years after the discovery, this puzzle is still one of the major challenges in astrophysics.
Vranjes, Jovo, Poedts, Stefaan
openaire +3 more sources
Optoelectronic Interfaces for Nongenetic Modulation of Excitable Tissues
Small Methods, Volume 10, Issue 3, 9 February 2026.This review summarizes recent advances in nongenetic optoelectronic technologies for the modulation of excitable biotissues, covering material selection, device design, and working principles, as well as characterization methods. Representative applications in in vitro and in vivo models of the cardiac, central, and peripheral nervous systems are ...
Qi Wang, Jinghua Li
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.Abstract The 1–100 keV electron precipitation during storm time has been studied by applying the updated ELSPEC inversion method to field‐aligned electron density profiles measured by the EISCAT Tromsø radar at L = 6.5. The statistical properties of peak energy, total energy flux, and total number flux as a function of MLT have been studied for the two
N. M. Ellahouny +6 more
wiley +1 more source
The Astrophysical Journal LettersThe variability of helium abundance in the solar corona and the solar wind is an important signature of solar activity, solar cycle, and solar wind sources, as well as coronal heating processes.
Leon Ofman, Yogesh, Silvio Giordano
doaj +1 more source