Results 21 to 30 of about 1,559,234 (209)
MHD turbulence and heating of the open field-line solar corona [PDF]
, 2003 This paper discusses the possibility that heating of the solar corona in open field-line regions emanating from coronal holes is due to a nonlinear cascade, driven by low-frequency or quasi-static magnetohydrodynamic fluctuations.
Dmitruk, Pablo +13 more
core +2 more sources
Magnetoacoustic Heating of the Solar Chromosphere
The Astrophysical Journal, 1991 Long-period acoustic waves generated in the solar convection zone can propagate radially outward through the overlying atmosphere and get resonantly absorbed in the magnetic arches of the low-lying chromospheric canopy. The resulting Poynting and acoustic flux that enters the magnetic canopy in the network regions is demonstrated to be adequate to ...
Joseph M. Davila, S. M. Chitre
openaire +1 more source
Coronal mass ejections and exoplanets: A numerical perspective
Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022 Abstract Coronal mass ejections (CMEs) are more energetic than any other class of solar phenomena. They arise from the rapid release of up to erg of magnetic energy mainly in the form of particle acceleration and bulk plasma motion. Their stellar counterparts, presumably involving much larger energies, are expected to play a fundamental role in shaping
Julián D. Alvarado‐Gómez +5 more
wiley +1 more source
Propagation and damping of MHD waves in the solar atmosphere [PDF]
, 2015 Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core +2 more sources
Modelling chromospheric evaporation in response to coronal heating [PDF]
, 2018 This thesis presents a new computationally efficient method for modelling the response of the solar corona to the release of energy. During impulsive heating events, the coronal temperature increases which leads to a downward heat flux into the ...
Johnston, Craig David
core +1 more source
Solar EUV‐Enhancement and Thermospheric Disturbances
Space Weather, Volume 19, Issue 12, December 2021., 2021 Abstract The increase of energetic electromagnetic flux during solar flares and particle precipitation during geomagnetic activity are among the most important sources of neutral density disturbances to the Earth's thermosphere. However, disentangling the role of X and EUV radiation during solar flares is difficult due to the rarity of sufficiently ...
C. Briand, K. Doerksen, F. Deleflie
wiley +1 more source
IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions
, 2021 Aims. To study the heating of solar chromospheric magnetic and nonmagnetic regions by acoustic and magnetoacoustic waves, the deposited acoustic-energy flux derived from observations of strong chromospheric lines is compared with the total integrated ...
M. Sobotka +5 more
core +1 more source
An Improved Solar Spectral Irradiance Composite Record
Earth and Space Science, Volume 8, Issue 8, August 2021., 2021 Abstract The solar spectral irradiance (SSI) data set is a key record for studying and understanding the energetics and radiation balance in Earth’s environment. Understanding the long‐term variations of the SSI over time scales of the 11‐years solar activity cycle and longer is critical for many Sun‐climate research topics.
Thomas N. Woods, Matthew T. DeLand
wiley +1 more source
Termination of Solar Cycles and Correlated Tropospheric Variability
Earth and Space Science, Volume 8, Issue 4, April 2021., 2021 Abstract The Sun provides the energy required to sustain life on Earth and drive our planet's atmospheric circulation. However, establishing a solid physical connection between solar and tropospheric variability has posed a considerable challenge. The canon of solar variability is derived from the 400 years of observations that demonstrates the waxing ...
Robert J. Leamon +2 more
wiley +1 more source
Chromospheric Bubbles in Solar Flares [PDF]
, 2020 We analyze a grid of radiative hydrodynamic simulations of solar flares to study the energy balance and response of the atmosphere to nonthermal electron beam heating.
Mathioudakis, Michail +3 more
core +1 more source