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Monthly Notices of the Royal Astronomical Society, 2017 For flares to be generated, stars have to have a sufficiently deep outer convection zone (F5 and later), strong large-scale magnetic fields (Ap/Bp-type stars) or strong, radiatively driven winds (B5 and earlier). Normal A-type stars possess none of these
M G Pedersen, V Antoci, H Korhonen
exaly +2 more sources
Evolution of Flare Activity in GKM Stars Younger Than 300 Myr over Five Years of TESS Observations
The Astronomical JournalStellar flares are short-duration (< hours) bursts of radiation associated with surface magnetic reconnection events. Stellar magnetic activity generally decreases as a function of both the age and Rossby number, R _0 , a measure of the relative ...
Adina D. Feinstein +4 more
doaj +3 more sources
The 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
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Flare Activity and Magnetic Feature Analysis of the Flare Stars. III. K-type Dwarf Binary Components
The Astrophysical JournalWe analyze the light curve of 199 dwarf stars that are members of binary systems resolved by Kepler mission. All of them are K-type active stars in binary systems of which their flare activity has been confirmed.
Hadis Goodarzi +2 more
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A Note on the Flare Stars in the Coalsack
Journal of Mathematical and Fundamental Sciences, 2019 Ringkasan. Didalam tulisan ini dilaporkan penemuan 5 buah "flare stars" di daerah Coalsack. Abstract. The discovery of 5 flare stars in the Coalsack is reported.
B. Hidajat, A. Kuncoro
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Flare Hunting in Hot Subdwarf and White Dwarf Stars from Cycles 1–5 of TESS Photometry
The Astrophysical Journal Supplement SeriesStellar flares are critical phenomena on stellar surfaces, which are closely tied to stellar magnetism. While extensively studied in main-sequence (MS) stars, their occurrence in evolved compact stars, specifically hot subdwarfs and white dwarfs (WDs ...
Keyu Xing +11 more
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The White-light Superflares from Cool Stars in GWAC Triggers
The Astrophysical JournalM-type stars are the ones that flare most frequently, but how big their maximum flare energy can reach is still unknown. We present 163 flares from 162 individual M2 through L1-type stars that triggered the GWAC, with flare energies ranging from 10 ^32.2
Guang-Wei Li +18 more
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Temporal Variation of Flare Occurrence Rates via the Spot Evolution on the Sun and Solar-type Stars
The Astrophysical JournalThe spot evolution on the Sun and solar-type stars is important for understanding the nature of consequential flaring activity. This study statistically investigates the variance of flare occurrence rate through the time evolution of spots on the Sun and
Takato Tokuno +3 more
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An “A star” on an M star during a flare within a flare [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractM dwarfs produce explosive flare emission in the near-UV and optical continuum, and the mechanism responsible for this phenomenon is not well-understood. We present a near-UV/optical flare spectrum from the rise phase of a secondary flare, which occurred during the decay of a much larger flare.
Kowalski, Adam F. +4 more
openaire +2 more sources