Results 101 to 110 of about 1,105,860 (262)
Journal of Geophysical Research: Atmospheres, Volume 129, Issue 15, 16 August 2024.Abstract It was recently suggested that the Sun could switch to a high‐activity regime which would lead to a rise of ultraviolet radiation with an amplitude of about four times larger than the amplitude of an average solar activity cycle and a simultaneous drop in total solar irradiance.
Anna V. Shapiro +5 more
wiley +1 more source
The Bright Rim Prominences according to 2.5D Radiative Transfer
The Astrophysical Journal LettersSolar prominences observed close to the limb commonly include a bright feature that, from the perspective of the observer, runs along the interface between itself and the underlying chromosphere. Despite several idealized models being proposed to explain
Jack M. Jenkins +4 more
doaj +1 more source
ALFVÉN WAVE HEATING OF THE SOLAR CHROMOSPHERE: 1.5D MODELS [PDF]
, 2015 Physical processes that may lead to solar chromospheric heating are analyzed using high-resolution 1.5D non-ideal MHD modeling. We demonstrate that it is possible to heat the chromospheric plasma by direct resistive dissipation of high-frequency Alfvén ...
Tony Arber +2 more
semanticscholar +1 more source
China's Ground‐Based Space Environment Monitoring Network—Chinese Meridian Project (CMP)
Space Weather, Volume 22, Issue 7, July 2024.Abstract Monitoring and investigation of the solar‐terrestrial space environment is a huge challenge for humans in space age. To this end, China has established the Ground‐based Space Environment Monitoring Network, namely Chinese Meridian Project (CMP).
Chi Wang +6 more
wiley +1 more source
Identifying Plasma Fractionation Processes in the Chromosphere Using IRIS
The Astrophysical JournalThe composition of the solar corona differs from that of the photosphere, with the plasma thought to fractionate in the solar chromosphere according to the first ionization potential (FIP) of the different elements.
David M. Long +9 more
doaj +1 more source
Non-linear propagation of kink waves to the solar chromosphere [PDF]
, 2015 Small-scale magnetic field concentrations (magnetic elements) in the quiet Sun are believed to contribute to the energy budget of the upper layers of the Sun's atmosphere, as they are observed to support a large number of MHD modes. In recent years, kink
M. Stangalini +2 more
semanticscholar +1 more source
Determining the Magnetic Field of Active Region Plages Using the Whole CLASP2/2.1 Spectral Window
The Astrophysical JournalThe Chromospheric LAyer SpectroPolarimeter missions, CLASP2 and CLASP2.1, demonstrated that the near-UV spectral region between 279.30 and 280.68 nm is suitable for studying the magnetism of the solar chromosphere.
David Afonso Delgado +18 more
doaj +1 more source
A Unified Model of Solar Prominence Formation with Self-consistent Heating
The Astrophysical JournalSeveral models have been proposed to explain the formation of solar prominences, among which the evaporation–condensation model and the direct injection model are the most popular ones.
C. J. Huang +3 more
doaj +1 more source
Modeling the Solar Chromosphere
, 2007 Spectral diagnostic features formed in the solar chromosphere are few and difficult to interpret -- they are neither formed in the optically thin regime nor in local thermodynamic equilibrium (LTE). To probe the state of the chromosphere, both from observations and theory, it is therefore necessary with modeling.
openaire +2 more sources
The Astrophysical Journal LettersWe present an interpretation of the recent Daniel K. Inouye Solar Telescope (DKIST) observations of propagating wave fronts in the lower solar atmosphere.
Shah Mohammad Bahauddin +7 more
doaj +1 more source