Results 51 to 60 of about 12,081 (211)

Solar Stereoscopy and Tomography

Living Reviews in Solar Physics, 2011
We review stereoscopic and tomographic methods used in the solar corona, including ground-based and space-based measurements, using solar rotation or multiple spacecraft vantage points, in particular from the STEREO mission during 2007--2010 ...
Markus J. Aschwanden
doaj  

Understanding the Variability of Helium Abundance in the Solar Corona Using Three-fluid Modeling and Ultraviolet Observations

The Astrophysical Journal Letters
The 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

Investigating Alfvénic wave propagation in coronal open-field regions

, 2015
The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves.
Morton, Richard, Tomczyk, Steve, Pinto, Rui   +2 more
core   +1 more source

Determination of sub-resolution structure of a jet by solar magnetoseismology [PDF]

, 2011
A thin dark thread is observed in a UV/EUV solar jet in the 171A, 193A and 211A and partially in 304A. The dark thread appears to originate in the chromosphere but its temperature does not appear to lie within the passbands of the Atmospheric Imaging ...
J. A. McLaughlin, G. Verth, McLaughlin, James, Erdélyi, R., Verth, G., McLaughlin, J.A., Morton, R.J., Morton, Richard, R. J. Morton, Morton, R. J., McLaughlin, J. A., Erdélyi, Robert, R. Erdélyi, Verth, Gary   +13 more
core   +1 more source

P-CORONA: A New Tool for Calculating the Intensity and Polarization of Coronal Lines in 3D Models of the Solar Corona

The Astrophysical Journal
The critical need to study the magnetic field in the solar corona is highlighted by recent observational facilities, such as the Daniel K. Inouye Solar Telescope and Aditya-L1.
Supriya Hebbur Dayananda, Ángel de Vicente, Tanausú del Pino Alemán, Javier Trujillo Bueno, Nataliia G. Shchukina   +4 more
doaj   +1 more source

The Solar X-ray Corona

, 2023
The X-ray emission from the Sun reveals a very dynamic hot atmosphere, the corona, which is characterized by a complex morphology and broad range of timescales of variability and spatial structuring. The solar magnetic fields play a fundamental role in the heating and structuring of the solar corona. Increasingly higher quality X-ray solar observations
Testa, Paola, Reale, Fabio
openaire   +2 more sources

Commission 10: Solar Activity

, 2007
Commission 10 aims at the study of various forms of solar activity, including networks, plages, pores, spots, fibrils, surges, jets, filaments/prominences, coronal loops, flares, coronal mass ejections (CMEs), solar cycle, microflares, nanoflares ...
Benz, A.O., Kozlovsky, B.Z., Van Driel-Gesztelyi, L., Gopalswamy, N., Poletto, G., Harrison, R.A., Schrijver, K.J., Wang, J.-X., Craig, Ian J.D., Melrose, Donald B., Klimchuk, James A.   +10 more
core   +1 more source

Spacecraft Radio Frequency Fluctuations in the Solar Corona: A MESSENGER–HELIOS Composite Study [PDF]

, 2019
Fluctuations in plasma electron density may play a role in solar coronal energy transport and the dissipation of wave energy. Transcoronal spacecraft radio sounding observations reveal frequency fluctuations (FFs) that encode the electron number density ...
Efimov, A. I., Hollweg, J. V., Jensen, Elizabeth A., Wexler, David B., Lukanina, Liudmila A., Lukanina, L. A., Coster, Anthea, Jensen, E. A., Coster, Anthea J., Vierinen, Juha, Efimov, Anatoli I., Hollweg, Joseph V., Wexler, David   +12 more
core   +1 more source

The role and contribution of magnetic fields, characterized via their magnetic flux, to the statistical structuring of the solar atmosphere

Scientific Reports, 2022
The anomalous heating of the solar upper atmosphere is one of the eight key problems in modern astronomy. Moreover, the stratification of the solar atmosphere is an outstanding key-problem in solar physics.
K. J. Li, J. C. Xu, W. Feng
doaj   +1 more source

The Heating of the Solar Corona

, 2021
The solar corona, the outer atmosphere of the Sun, is heated to millions of Kelvin. This is several orders of magnitude hotter than the photosphere, the optical surface of the Sun, below, and a mystery that has baffled scientists for centuries.
Parenti, Susanna, Nicholeen Viall, De Moortel, Ineke, Viall, Nicholeen, Klimchuk, James A., Downs, Cooper, Ineke Moortel, Cooper Downs, Susanna Parenti, Reale, Fabio, James A. Klimchuk, Fabio Reale, Viall, Nicholeen M., Moortel, Ineke   +13 more
core   +1 more source