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Stellar flares [PDF]

open access: yesLiving Reviews in Solar Physics
Magnetic storms on stars manifest as remarkable, randomly occurring changes of the luminosity over durations that are tiny in comparison to the normal evolution of stars.
Adam Kowalski
exaly   +6 more sources

Self-organized Criticality in Stellar Flares [PDF]

open access: yesThe Astrophysical Journal, 2021
Abstract Power-law size distributions are the hallmarks of nonlinear energy dissipation processes governed by self-organized criticality (SOC). Here we analyze 75 data sets of stellar flare size distributions, mostly obtained from the Extreme-Ultraviolet Explorer and the Kepler mission.
Markus J. Aschwanden, Manuel Güdel
openaire   +3 more sources

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

On the gamma-activity of stellar flares [PDF]

open access: yesSymposium - International Astronomical Union, 1990
The principal possibility of γ-ray manifestation of stellar flares in the framework of pinch-model is shown. Validity of assumption that, γ-bursts are connected with magnetically active dwarfs (MAD) is discussed.
H. A. Harutyunian, V. S. Hayrapetyan
openaire   +1 more source

White-light Superflare and Long-term Activity of the Nearby M7-type Binary EI Cnc Observed with GWAC System

open access: yesThe Astrophysical Journal, 2023
Stellar white-light flares are believed to play an essential role in the physical and chemical properties of the atmosphere of the surrounding exoplanets.
Hua-Li Li   +16 more
doaj   +1 more source

Radio Stars of the SKA

open access: yesUniverse, 2021
Radio emission from stars can be used, for example, to study ionized winds or stellar flares. The radio emission is faint and studies have been limited to few objects.
Bin Yu, Albert Zijlstra, Biwei Jiang
doaj   +1 more source

Bridging High-density Electron Beam Coronal Transport and Deep Chromospheric Heating in Stellar Flares

open access: yesThe Astrophysical Journal Letters, 2023
The optical and near-ultraviolet (NUV) continuum radiation in M-dwarf flares is thought to be the impulsive response of the lower stellar atmosphere to magnetic energy release and electron acceleration at coronal altitudes.
Adam F. Kowalski
doaj   +1 more source

A review of stellar flares and their characteristics [PDF]

open access: yesSolar Physics, 1989
AbstractWe review the flaring activity of stars across the HR-diagram. Brightenings have been reported along the entire Main Sequence and in many stars off the Main Sequence. Some stars are decidedly young, others are in advanced stages of stellar evolution. Flares are common on stars with outer convection zones and outbursts have been reported also on
openaire   +1 more source

Stellar flares with PLATO

open access: yes, 2023
Stellar flares are powerful localized eruptions caused by magnetic reconnection events in a star's magnetosphere that can be seen across the entire electromagnetic spectrum. Over short timescales of minutes to a few hours, they emit energies up to 10^38 erg.
Raetz, Stefanie   +6 more
openaire   +2 more sources

Flares: the Solar-Stellar Connection [PDF]

open access: yesInternational Astronomical Union Colloquium, 1995
The systematic study of stellar flares in now more than 30 years old. Throughout that time the solar flare paradigm has been used, highly successfully, to understand various aspects of the stellar phenomenon. In this introductory overview I will attempt to justify the use of the solar model in understanding the stellar equivalent. But I will also point
openaire   +1 more source

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