Results 81 to 90 of about 10,729 (219)

Lateral Confinement and the Remarkably Self-similar Nature of Coronal Pseudostreamer Mass Ejections

The Astrophysical Journal, 2023
Coronal mass ejections (CMEs) that originate from pseudostreamers, which separate coronal holes of the same magnetic polarity, are characterized by a narrow (∼5°–30°), fan-shaped appearance in white-light coronagraph images.
Y.-M. Wang, P. Hess
doaj   +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, A. W. Smith, M. Owens, W. L. Woo, L. Barnard, N. Edward‐Inatimi, I. J. Rae   +6 more
wiley   +1 more source

Geomagnetic storms and their sources on the sun:the rising phase of the sunspot cycle

Antarctic Record, 2013
Solar phenomena, including solar flares and coronal holes, are considered in the context of a NEWS coordinate system, obtained by application of the heliographic and heliomagnetic coordinate systems to the solar latitude and longitude, respectively.
Takao Saito, Syun-Ichi Akasofu, Shinichi Watari, Natsuo Sato, Hiroaki Misawa   +4 more
doaj   +1 more source

LUCI onboard Lagrange, the next generation of EUV space weather monitoring

Journal of Space Weather and Space Climate, 2020
Lagrange eUv Coronal Imager (LUCI) is a solar imager in the Extreme UltraViolet (EUV) that is being developed as part of the Lagrange mission, a mission designed to be positioned at the L5 Lagrangian point to monitor space weather from its source on the ...
West Matthew J., Kintziger Christian, Haberreiter Margit, Gyo Manfred, Berghmans David, Gissot Samuel, Büchel Valeria, Golub Leon, Shestov Sergei, Davies Jackie A.   +9 more
doaj   +1 more source

Solar Wind Acceleration in Coronal Holes

, 2002
This paper reviews the current state of our understanding of high-speed solar wind acceleration in coronal holes. Observations by SOHO, coupled with interplanetary particle measurements going back several decades, have put strong constraints on possible explanations for how the protons, electrons, and minor ions receive their extreme kinetic properties.
openaire   +2 more sources

Out-of-ecliptic studies of coronal holes and their relation to the solar wind [PDF]

The advantages of observing coronal holes of the sun above the solar ecliptic plane by a solar probe are discussed. Also discussed are the size of coronal holes, their temperature, and magnetic fields associated with the holes.
Noyes, R. W.
core   +1 more source

Polarization vision and the physiological basis for trichromatic vision in Philaenus spumarius: Understanding host‐seeking behaviour in insect vectors for Xylella fastidiosa control

Annals of Applied Biology, Volume 188, Issue 2, Page 503-519, March 2026.
We investigated the role of vision in host‐seeking behaviour by Philaenus spumarius, the main European vector of Xylella fastidiosa, through an integrated anatomical, optical, physiological, and behavioural study. Our data highlight that the spittlebug uses visual cues, including polarized light, which may aid in detecting the polarized reflections ...
Domen Lazar, Elizabeth Clark, Andrej Meglič, Daniele Cornara, Gregor Belušič   +4 more
wiley   +1 more source

Sources of magnetic fields in recurrent interplanetary streams [PDF]

The sources of magnetic fields in recurrent streams were examined. Most fields and plasmas at 1 AU were related to coronal holes, and the magnetic field lines were open in those holes.
Behannon, K. W., Burlaga, L. F., Feldman, W. C., Hansen, S. F., Pneuman, G. W.   +4 more
core   +1 more source

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin, A. Bruno, L. Blum, N. Cannady, T. G. Guzik, R. Kataoka, K. Munakata, Y. Akaike, S. Torii   +8 more
wiley   +1 more source

Physical properties of solar polar jets: A statistical study with Hinode XRT data

, 2015
The target of this work is to investigate the physical nature of polar jets in the solar corona and their possible contribution to coronal heating and solar wind flow based on the analysis of X-ray images acquired by the Hinode XRT telescope. We estimate
Bemporad, A., Paraschiv, A. R., Sterling, A. C.   +2 more
core   +1 more source