Results 21 to 30 of about 53,472 (261)

Modeling Hadronic Gamma-Ray Emissions from Solar Flares and Prospects for Detecting Nonthermal Signatures from Protostars

open access: yesThe Astrophysical Journal, 2023
We investigate gamma-ray emission in the impulsive phase of solar flares and the detectability of nonthermal signatures from protostellar flares. Energetic solar flares emit high-energy gamma rays of GeV energies, but their production mechanism and ...
Shigeo S. Kimura   +2 more
doaj   +1 more source

Flare Hybrids [PDF]

open access: yes, 2015
Svestka (Solar Phys. 1989, 121, 399) on the basis of the Solar Maximum Mission observations introduced a new class of flares, the so-called flare hybrids.
Dubieniecki, P., Tomczak, M.
core   +2 more sources

Interrogating solar flare loop models with IRIS observations 1: Overview of the models, and mass flows

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported through the solar atmosphere or into the heliosphere, and together with ...
Graham S. Kerr, Graham S. Kerr
doaj   +1 more source

Power-law Distribution of Solar Cycle–modulated Coronal Jets

open access: yesThe Astrophysical Journal Supplement Series, 2023
Power-law distributions have been studied as a significant characteristic of nonlinear dissipative systems. Since discovering the power-law distribution of solar flares that was later extended to nanoflares and stellar flares, it has been widely accepted
Jiajia Liu   +8 more
doaj   +1 more source

Solar flare effects on D-region ionosphere using VLF measurements during low- and high-solar activity phases of solar cycle 24

open access: yesEarth, Planets and Space, 2018
The effects of solar flares on the propagation of subionospheric VLF signals from NWC and NLK transmitter stations monitored at a low-latitude station, Suva (18.2°S, 178.4°E), Fiji, between December 2006 and December 2010 (an unprecedented solar minimum ...
Abhikesh Kumar, Sushil Kumar
doaj   +1 more source

Solar–Stellar Connection: X-Ray Flares to Energetic (E > 10 MeV) Particle Events

open access: yesThe Astrophysical Journal, 2023
Energetic particle environments are an important factor for the viability of life on exoplanets surrounding flare stars. In the heliosphere, large gradual solar energetic ( E > 10 MeV) particle (SEP) events are produced by shocks from fast coronal mass ...
S. W. Kahler, A. G. Ling
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

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

On the flare induced high-frequency global waves in the Sun [PDF]

open access: yes, 2010
Recently, Karoff and Kjeldsen (2008) presented evidence of strong correlation between the energy in the high-frequency part (5 ...
Chaplin   +17 more
core   +1 more source

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