Results 11 to 20 of about 2,418 (298)
Detecting Stellar Flares in Photometric Data Using Hidden Markov Models
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 +2 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 +4 more sources
Stellar flares are far-ultraviolet luminous
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
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
Solar and Stellar Flares [PDF]
Highlights of Astronomy, 1989 AbstractThis review concentrates on some selected topics concerning the release of magnetic energy and associated phenomena in flares. Emphasis is on microflares, recent studies of different phases of flares, and propagation and trapping of flare accelerated electrons. The ongoing analysis of the observations of the previous solar cycle reaches a state
openaire +2 more sources
Flares: the Solar-Stellar Connection [PDF]
International 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
, 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
Stellar Flare Statistics - Physical Consequences [PDF]
International Astronomical Union Colloquium, 1989 AbstractThe observational data permit us to establish clear statistical correlations between different parameters of stellar flare activity and the characteristics of quiet stars. These relations are: (i)between energies and frequencies of flares on stars of different luminosities;(ii)between total radiation energies of flares and quiet stars both in X-
openaire +1 more source
Polarimetry of stellar active regions and flares [PDF]
Solar Physics, 1989 AbstractObservations of regular and irregular polarimetric variability in late-type stars are reviewed, and the related physical and geometrical effects are discussed. There are indications that the irregular part of the variability could be caused by transient events, possibly associated with flares.
I. Tuominen +4 more
openaire +1 more source
, 2020 International audienceThe CHinense Exoplanet Searching Program from Antarctica is a ground-based wide-field photometric survey using the AST3 and CSTAR telescopes located at Dome A, Antarctica.
Zhang, Hui +43 more
core +1 more source