Results 1 to 10 of about 436,677 (299)

Wave heating of the solar atmosphere. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2015
Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote diagnostic tool and their presumed contribution to plasma heating processes. We discuss our current understanding of coronal heating by magnetic waves, based on recent observational evidence and ...
Arregui I.
europepmc   +5 more sources

Particle acceleration in solar flares [PDF]

open access: yes
The most direct signatures of particle acceleration in flares are energetic particles detected in interplanetary space and in the Earth atmosphere, and gamma rays, neutrons, hard X-rays, and radio emissions produced by the energetic particles in the ...
Forman, M. A., Ramaty, R.
core   +1 more source

Unveiling the True Nature of Plasma Dynamics from the Reference Frame of a Superpenumbral Fibril

open access: yesThe Astrophysical Journal
The magnetic geometry of the solar atmosphere, combined with projection effects, makes it difficult to accurately map the propagation of ubiquitous waves in fibrillar structures.
W. Bate   +13 more
doaj   +1 more source

Solar activity influence on climatic variations of stratosphere and mesosphere in mid-latitudes [PDF]

open access: yes
The direct modulation of temperature of the mid-latitude mesosphere by the solar-cycle EUV variation, which leads to greater heat input at higher solar activity, is well established.
Entzian, G.   +2 more
core   +1 more source

Mars surface radiation exposure for solar maximum conditions and 1989 solar proton events [PDF]

open access: yes
The Langley heavy-ion/nucleon transport code, HZETRN, and the high-energy nucleon transport code, BRYNTRN, are used to predict the propagation of galactic cosmic rays (GCR's) and solar flare protons through the carbon dioxide atmosphere of Mars. Particle
Nealy, John E., Simonsen, Lisa C.
core   +1 more source

Estimating the cross-sectional sizes of potential solar triggers of near-Sun magnetic switchbacks

open access: yesAstronomy & Astrophysics
Context. The discovery of near-Sun magnetic switchbacks (SBs) represents a key result of the Parker Solar Probe (PSP) mission. Aims. Several theories and models suggest that near-Sun SBs may be triggered by small-scale transient phenomena occurring in ...
Patsourakos Spiros
doaj   +1 more source

The Effect of Helio-Geomagnetic Activity in the Geo-Environment and by Extension to Human Health

open access: yesAtmosphere
Solar activity encompasses various phenomena within the solar atmosphere, notably including eruptive events like solar flares and coronal mass ejections (CMEs) [...]
Panagiota Preka-Papadema   +1 more
doaj   +1 more source

Long-Term Evolution in Noctilucent Clouds’ Response to the Solar Cycle: A Model-Based Study

open access: yesAtmosphere
Noctilucent clouds (NLC) are sensitive indicators in the upper mesosphere, reflecting changes in the background atmosphere. Studying NLC responses to the solar cycle is important for understanding solar-induced changes and assessing long-term climate ...
Ashique Vellalassery   +3 more
doaj   +1 more source

The effects of solar particle events on the middle atmosphere [PDF]

open access: yes
Solar particle events (SPEs) have been investigated since the late 1960's for possible effects on the middle atmosphere. Solar protons from SPEs produce ionizations, dissociations, dissociative ionizations, and excitations in the middle atmosphere.
Douglass, Anne R.   +2 more
core   +1 more source

Astro2020 Science White Paper: Synoptic Studies of the Sun as a Key to Understanding Stellar Astrospheres

open access: yes, 2019
Ground-based solar observations provide key contextual data (i.e., the 'big picture') to produce a complete description of the only astrosphere we can study in situ: our Sun's heliosphere.
Bain, Hazel M.   +13 more
core  

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