Results 41 to 50 of about 2,418 (298)

A Machine Learning Approach for Identifying Coronal Mass Ejection–associated Stellar Flares in TESS Observations

open access: yesThe Astrophysical Journal Supplement Series
Coronal mass ejections (CMEs) are major drivers of stellar space weather and can strongly influence the habitability of exoplanets. However, compared to the frequent occurrence of white-light flares, confirmed stellar CMEs remain extremely rare.
Yu Shi   +4 more
doaj   +1 more source

FLARE: A Framework for Stellar Flare Forecasting Using Stellar Physical Properties and Historical Records

open access: yesProceedings of the Thirty-Fourth International Joint Conference on Artificial Intelligence
Stellar flare events are critical observational samples for astronomical research; however, recorded flare events remain limited. Stellar flare forecasting can provide additional flare event samples to support research efforts. Despite this potential, no specialized models for stellar flare forecasting have been proposed to date.
Bingke Zhu   +8 more
openaire   +2 more sources

Long-duration solar and stellar flares [PDF]

open access: yesSolar Physics, 1989
AbstractAccording to one of the most popular classifications, solar flares may be assigned either to the category of small short-lived events, or to the category of large, long-duration two-ribbon (2-R) flares. Even if such a broad division oversimplifies the flare phenomenon, our knowledge of the characteristics of stellar flares is so poor, that it ...
openaire   +1 more source

A Bayesian method for detecting stellar flares [PDF]

open access: yes, 2014
We present a Bayesian-odds-ratio-based algorithm for detecting stellar flares in light-curve data. We assume flares are described by a model in which there is a rapid rise with a half-Gaussian profile, followed by an exponential decay.
Williams, D.   +4 more
core   +1 more source

Prevalence of Systemic Lupus Erythematosus in Australia, 2010–2022: A Population‐Based Study Using Linked National Administrative Health Data

open access: yesArthritis Care &Research, EarlyView.
Objective Systemic lupus erythematosus (SLE) is a heterogenous inflammatory condition with widely varying global prevalence estimates. The frequency of SLE in the general population of Australia has been reported to be notably lower than contemporary estimates in countries such as the United States or United Kingdom, at 19 to 39 per 100,000 as opposed ...
Lucinda Roper   +7 more
wiley   +1 more source

Constraining the Mass Loss and the Kinetic Energy of Stellar Coronal Mass Ejections with Solar Far-ultraviolet Flares

open access: yesThe Astrophysical Journal
Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres.
Nuri Park   +2 more
doaj   +1 more source

Constraints on Stellar Flare Energy Ratios in the NUV and Optical from a Multiwavelength Study of GALEX and Kepler Flare Stars

open access: yesThe Astrophysical Journal, 2023
We present a multiwavelength study of stellar flares on primarily G-type stars using overlapping time domain surveys in the near-ultraviolet (NUV) and optical regimes. The NUV (the Galaxy Evolution Explorer; GALEX) and optical (Kepler) wavelength domains
C. E. Brasseur   +3 more
doaj   +1 more source

Nucleosynthesis in stellar flares

open access: yes, 2008
12 pages, 3 figures, contribution to the Proceedings of the XIXemes Rencontres de Blois, Matter and energy in the Universe, Blois, France, May ...
Tatischeff, V.   +2 more
openaire   +2 more sources

Information Horizon of Stellar Flares

open access: yes, 2021
Because the dynamics of stellar flares are modulated by magnetic activity cycles, they provide a window to the underlying dynamics. Using mutual information, we compare the process that creates stellar flares with a nonstationary Poisson process.
Homan, Jonathan
core  

Probability Distribution Functions of Solar and Stellar Flares

open access: yes, 2022
The paper studies the soft X-ray data of solar flares and found that the distribution functions of flare fluence are successfully modeled by tapered power law or gamma function distributions whose power exponent is slightly smaller than 2, indicating ...
Takashi Sakurai
core   +1 more source

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