Results 71 to 80 of about 682 (184)

Constraints on Acoustic Wave Energy Fluxes and Radiative Losses in the Solar Chromosphere from Non-LTE Inversions

The Astrophysical Journal
Accurately assessing the balance between acoustic wave energy fluxes and radiative losses is critical for understanding how the solar chromosphere is thermally regulated.
J. M. da Silva Santos, M. Molnar, I. Milić, M. Rempel, K. Reardon, J. de la Cruz Rodríguez   +5 more
doaj   +1 more source

Solar Flare Ribbon Fronts. II. Evolution of Heating Rates in Individual Flare Footpoints

The Astrophysical Journal
Solar flare ribbon fronts appear ahead of the bright structures that normally characterize solar flares, and can persist for an extended period of time in spatially localized patches before transitioning to “regular” bright ribbons. They likely represent
Graham S. Kerr, Vanessa Polito, Yan Xu, Joel C. Allred   +3 more
doaj   +1 more source

Solar Chromospheric Heating by Magnetohydrodynamic Waves: Dependence on the Inclination of the Magnetic Field

The Astrophysical Journal
A proposed mechanism for solar chromospheric heating is magnetohydrodynamic waves propagating upward along magnetic field lines and dissipating their energy in the chromosphere.
Mayu Koyama, Toshifumi Shimizu
doaj   +1 more source

Comparison between variations in solar UV radiation and sunspot parameters with Mg II daily index as a proxy

Physics Open
Solar UV radiation influence the Earth's climate and upper atmosphere. The UV emission from the Sun modulates with the sunspot cycle with an 11-year periodicity.
(G) Chandrika, Belur Ravindra, Vijay Kumar Doddamani   +2 more
doaj   +1 more source

Solar Flares and the Chromosphere

, 2010
5 pages, 3 ...
Fletcher, L., Turkmani, R., Hudson, H. S., Hawley, S. L., Kowalski, A., Berlicki, A., Heinzel, P.   +6 more
openaire   +2 more sources

Chromosphere of the quiet sun

Astronomy & Astrophysics
Context. The solar chromosphere is a dynamic and crucial interface between the solar interior and its interplanetary environment, regulating how energy is locally deposited into heat and transported into the upper atmospheric layers.
Noraz Q., Carlsson M., Aulanier G.
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Rotation of Solar Chromosphere: A Global Perspective of Mg II Index during the Decay Phase of the Modern Maximum

The Astrophysical Journal
Rotation is one of the fundamental characteristics of the Sun, and it plays a crucial role in understanding the magnetic activities and dynamo processes.
Ruoxue Sha, Linhua Deng, Miao Wan, Xiaoyu Dong, Fuyu Li, Tingting Xu, Kunyan Wang   +6 more
doaj   +1 more source

Generation and Life Cycle of Solar Spicules

The Astrophysical Journal
The physical mechanism for the creation of solar spicules is proposed with three stages of their life cycle. It is assumed that at stage I the density hump is formed locally in the x-y plane in the lower chromosphere in the presence of temperature ...
Hamid Saleem, Zain H. Saleem
doaj   +1 more source

The Solar Chromosphere [PDF]

Monthly Notices of the Royal Astronomical Society, 1933
openaire   +2 more sources