Results 41 to 50 of about 1,165,809 (269)

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope [PDF]

open access: yesEPJ Web of Conferences, 2020
Low-frequency radio telescopes are cheap and useful devices for the investigation of terrestrial and extra-terrestrial emissions. These emissions come either from the Sun and the planet Jupiter to terrestrial emissions.
Aqasha Adam   +3 more
doaj   +1 more source

Anomaly distribution of ionospheric total electron content responses to some solar flares

open access: yesEarth and Planetary Physics, 2019
Previous studies have shown that the ionospheric responses to a solar flare are significantly dependent on the solar zenith angle (SZA): the ionospheric responses are negatively related to the SZAs.
HuiJun Le   +3 more
doaj   +1 more source

Latitudinal distribution of solar microflares and high-temperature plasma at solar minimum

open access: yesSolar-Terrestrial Physics, 2023
The paper analyzes the latitudinal distribution of high-temperature plasma (T>4 MK) and microflares on the solar disk during low solar activity in 2009.
Kirichenko A. S.   +4 more
doaj   +1 more source

MAGNETIC PROPERTIES OF SOLAR ACTIVE REGIONS THAT GOVERN LARGE SOLAR FLARES AND ERUPTIONS [PDF]

open access: yes, 2016
Solar flares and coronal mass ejections (CMEs), especially the larger ones, emanate from active regions (ARs). With the aim of understanding the magnetic properties that govern such flares and eruptions, we systematically survey all flare events with ...
S. Toriumi   +4 more
semanticscholar   +1 more source

The influence of active region information on the prediction of solar flares: an empirical model using data mining [PDF]

open access: yesAnnales Geophysicae, 2005
Predicting the occurrence of solar flares is a challenge of great importance for many space weather scientists and users. We introduce a data mining approach, called Behavior Pattern Learning (BPL), for automatically discovering correlations between ...
M. Núñez   +3 more
doaj   +1 more source

Lithium-6 from Solar Flares [PDF]

open access: yes, 2000
By introducing a hitherto ignored Li-6 producing process, due to accelerated He-3 reactions with He-4, we show that accelerated particle interactions in solar flares produce much more Li-6 than Li-7.
Benzion Kozlovsky   +9 more
core   +2 more sources

Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares [PDF]

open access: yes, 2017
We report on the Fermi-LAT detection of high-energy emission from the behind-the-limb (BTL) solar flares that occurred on 2013 October 11, and 2014 January 6 and September 1.
M. Ackermann   +88 more
semanticscholar   +1 more source

Effects of solar flares on the ionosphere as shown by the dynamics of ionograms recorded in Europe and South Africa

open access: yesAnnals of Geophysics, 2019
. We have investigated the solar flare effects on ionospheric absorption with the systematic analysis of ionograms measured at midlatitude and low-latitude ionosonde stations under different solar zenith angles.
V. Barta   +4 more
semanticscholar   +1 more source

The Influence of Solar Spectral Lines on Electron Concentration in Terrestrial Ionosphere

open access: yesOpen Astronomy, 2011
One of the methods of detection and analysis of solar flares is observing the time variations of certain solar spectral lines. During solar flares, a raise of electron concentration occurs in Earth’s ionosphere which results in amplitude and phase ...
Nina A.   +3 more
doaj   +1 more source

Fractal Reconnection in Solar and Stellar Environments

open access: yes, 2016
Recent space based observations of the Sun revealed that magnetic reconnection is ubiquitous in the solar atmosphere, ranging from small scale reconnection (observed as nanoflares) to large scale one (observed as long duration flares or giant arcades ...
A. Asai   +110 more
core   +1 more source

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