Results 101 to 110 of about 2,282,682 (263)

Global Ionospheric Responses to Four X‐Class Solar Flares in November 2025

open access: yesSpace Weather, Volume 24, Issue 11, November 2026.
Abstract We investigate global ionospheric responses to four X‐class solar‐disk flares that occurred in November 2025 from the same solar active region, using multi‐instrument observations including GNSS, ionosonde, geomagnetic and GOES solar irradiance data. Pronounced dayside TEC enhancements are observed for three flares (#2 X1.2, #3 X5.1, and #4 X4.
Lei Liu, Shasha Zou
wiley   +1 more source

The impulsivity of solar flares: concepts and applications [PDF]

open access: yes, 2018
During the impulsive phase of solar flares a distribution of nonthermal electrons propagates from the site of energy release towards the lower layers of the solar atmosphere.
Fajardo Mendieta, Wilmar German
core  

A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 11, Page 3136-3156, November 2026.
Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley   +1 more source

Interplanetary shock waves associated with solar flares [PDF]

open access: yes, 1974
The interaction of the earth's magnetic field with the solar wind is discussed with emphasis on the influence of solar flares. The geomagnetic storms are considerered to be the result of the arrival of shock wave generated by solar flares in ...
Chao, J. K., Sakurai, K.
core  

Patterns of X-Ray and γ-Ray Flares: From Blazar to Magnetar and Sun

open access: yesThe Astrophysical Journal
Using Gaussian process methods, we analyzed the light curves of three extreme solar X-ray flares observed by the RHESSI satellite. Their variability characteristics were then compared with those of HXMT-HE X-ray burst (XRB; in SGR 1935+2154) associated ...
Haiyun Zhang   +8 more
doaj   +1 more source

Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares [PDF]

open access: yes, 2018
Solar flare emission is detected in all EM bands and variations in flux density of solar energetic particles. Often the EM radiation generated in solar and stellar flares shows a pronounced oscillatory pattern, with characteristic periods ranging from a ...
J. McLaughlin   +4 more
semanticscholar   +1 more source

VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES [PDF]

open access: yes, 2016
Solar flares are the most powerful explosions occurring in the solar system, which may lead to disastrous space weather events and impact various aspects of our Earth.
B. Tan   +4 more
semanticscholar   +1 more source

Quasi‐Homologous Solar Flares and Impacts on Thermospheric Density and Satellite Orbital Drag

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Quasi‐Homologous Flaring (QHF) activity from active regions on the Sun releases intense electromagnetic radiation in recurrent bursts over extended periods. In this letter, we present the effects of recurrent impulsive extreme ultraviolet (EUV) heating on thermospheric neutral density and the resulting atmospheric drag on satellites based on ...
S. Tulasi Ram   +8 more
wiley   +1 more source

When and where to look to observe major solar flares [PDF]

open access: yes, 1989
When and where to look is an important issue to observers planning to observe major solar flares. Prediction of major flares is also important because they influence the Earth's environment.
Bai, T.
core  

X-ray quasi-periodic pulsations in solar flares as magnetohydrodynamic oscillations [PDF]

open access: yes, 2005
We report the first observation at high spatial resolution of long-period quasi-periodic pulsations (QPP) of X-ray radiation during solar flares, made possible with the Reuven Ramaty High Energy Solar Spectroscopic Imager(RHESSI), supported by ...
Fletcher, L. (Lyndsay)   +11 more
core   +1 more source

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