Results 21 to 30 of about 177,945 (292)
The 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
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, 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
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A catalogue of white-light flares observed by Yohkoh [PDF]
, 2003 The aspect camera of the Soft X-ray Telescope (SXT) on Yohkoh provided the first systematic survey of white-light flares from an observatory in space. The observations were made in the Fraunhofer g-band at a pixel size of 2.46 arcsec and a typical sample
H. S. Hudson +7 more
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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
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Splinter Session "Solar and Stellar Flares"
, 2017 This summary reports on papers presented at the Cool Stars-16 meeting in the splinter session "Solar and Stellar flares." Although many topics were discussed, the main themes were the commonality of interests, and of physics, between the solar and ...
H. S. Hudson (7742606) +10 more
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X-ray/H$\alpha$ scaling relationships in stellar flares
, 2023 We report on the results of our simultaneous observations of three large stellar flares with soft X-rays (SXRs) and an H$\mathrm{\alpha}$ emission line from two binary systems of RS CVn type.
Tsuboi, Yohko +7 more
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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
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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
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Observations and modeling of spectral line asymmetries in stellar flares
, 2022 Context. Stellar flares are energetic events occurring in stellar atmospheres. They have been observed on various stars using photometric light curves and spectra.
P. Heinzel +5 more
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Radio Emission from Stellar Flares [PDF]
International Astronomical Union Colloquium, 1989 AbstractAn overview is given of the observations of stellar radio ‘flares', defined as radio emission which is both variable in time and created by explosive releases of magnetic energy. The main sources of such flares are late-type Main-Sequence stars, classic close binaries, X-ray binaries, and pre-Main-Sequence stars.We summarize the interpretations
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