Results 11 to 20 of about 2,433 (297)
Living Reviews in Solar PhysicsMagnetic 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, Kowalski Adam F
exaly +6 more sources
Solar–Stellar Connection: X-Ray Flares to Energetic (E > 10 MeV) Particle Events [PDF]
The 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 +2 more sources
Detecting Stellar Flares in Photometric Data Using Hidden Markov Models [PDF]
The Astrophysical JournalWe present a hidden Markov model (HMM) for discovering stellar flares in light-curve data of stars. HMMs provide a framework to model time series data that are nonstationary; they allow for systems to be in different states at different times and ...
J. Arturo Esquivel +7 more
doaj +3 more sources
THE KEPLER CATALOG OF STELLAR FLARES [PDF]
The Astrophysical Journal, 2016 ABSTRACT A homogeneous search for stellar flares has been performed using every available Kepler light curve. An iterative light curve de-trending approach was used to filter out both astrophysical and systematic variability to detect flares.
Davenport, James R. A.
openaire +5 more sources
Solar and stellar flares: Questions and problems [PDF]
Solar Physics, 1989 AbstractAlthough progress has been made in understanding certain aspects of the physics of solar and stellar flares, there are a number of topics which, in the author's opinion, still pose a problem. We summarize these topics here.
Mullan D J, D J Mullan
exaly +2 more sources
Stellar flares are far-ultraviolet luminous [PDF]
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We identify 182 flares on 158 stars within 100 pc of the Sun in both the near-ultraviolet (NUV; $1750\!-\!2750$ Å) and far-ultraviolet (FUV; $1350\!-\!1750$ Å) using high-cadence light curves from the Galaxy Evolution Explorer. Ultraviolet (UV) emission from stellar flares plays a crucial role in determining the habitability of ...
Vera L Berger +8 more
openaire +3 more sources
Self-organized Criticality in Stellar Flares [PDF]
The 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
Interior Heating of Rocky Exoplanets from Stellar Flares with Application to TRAPPIST-1 [PDF]
, 2022 Many stars of different spectral types with planets in the habitable zone are known to emit flares. Until now, studies that address the long-term impact of stellar flares and associated coronal mass ejections (CMEs) assumed that the planet's interior ...
Bower, Daniel J. +4 more
core +1 more source
On the gamma-activity of stellar flares [PDF]
Symposium - 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
The 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