Results 271 to 280 of about 2,433 (297)
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Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2000
New observations by space telescopes during the last ten years have led to significant advances in understanding the nature of solar flares. X–ray and UV imaging of flare emissions have confirmed that flares are powered by the sudden release of magnetic energy associated with currents flowing in the solar atmosphere.
T G Forbes
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New observations by space telescopes during the last ten years have led to significant advances in understanding the nature of solar flares. X–ray and UV imaging of flare emissions have confirmed that flares are powered by the sudden release of magnetic energy associated with currents flowing in the solar atmosphere.
T G Forbes
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Bulletin of the Crimean Astrophysical Observatory, 2014
Different aspects of stellar flares as one of the events of stellar activity with different levels of similarity to solar-activity phenomena are briefly discussed: those which are understandable by means of scaling of solar events, those that do not occur on the Sun but general solar features allow us to understand them, and such stellar events that ...
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Different aspects of stellar flares as one of the events of stellar activity with different levels of similarity to solar-activity phenomena are briefly discussed: those which are understandable by means of scaling of solar events, those that do not occur on the Sun but general solar features allow us to understand them, and such stellar events that ...
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A scenario for impulsive stellar flares
Astronomical and Astrophysical Transactions, 1992Abstract The scenario of an impulsive stellar flare is proposed: the optical continuum pulse arises in the dense atmospheric layers which are close to the region of the primary energy release, then perturbation propagates along one or several giant arches for 1-3 min, and a gas-dynamic process is developing on a large area in the other base of the arch
M A Livshits, M M Katsova
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Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares [PDF]
Space Science Reviews, 2018 Solar flare emission is detected in all EM bands and variations in flux density of solar energetic particles. Often the EM radiation generated in solar and stellar flares shows a pronounced oscillatory pattern, with characteristic periods ranging from a ...
V M Nakariakov +2 more
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COMPARISON OF DAMPED OSCILLATIONS IN SOLAR AND STELLAR X-RAY FLARES [PDF]
Astrophysical Journal, 2016 We explore the similarity and difference of the quasi-periodic pulsations (QPPs) observed in the decay phase of solar and stellar flares at X-rays. We identified 42 solar flares with pronounced QPPs, observed with the Reuven Ramaty High-Energy Solar ...
V M Nakariakov
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The Characteristics of Solar X-Class Flares and CMEs: A Paradigm for Stellar Superflares and Eruptions? [PDF]
Solar Physics, 2016 This paper explores the characteristics of 42 solar X-class flares that were observed between February 2011 and November 2014, with data from the Solar Dynamics Observatory (SDO) and other sources. This flare list includes nine X-class flares that had no
Hugh Hudson +2 more
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Solar Physics, 1977
Short-lived increases in the brightness of many red dwarfs have been observed for the last 30 yr, and a variety of more or less exotic models have been proposed to account for such flares. Information about flares in the Sun has progressed greatly in recent years as a result of spacecraft experiments, and properties of coronal flare plasma are becoming
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Short-lived increases in the brightness of many red dwarfs have been observed for the last 30 yr, and a variety of more or less exotic models have been proposed to account for such flares. Information about flares in the Sun has progressed greatly in recent years as a result of spacecraft experiments, and properties of coronal flare plasma are becoming
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Solar Physics, 1967
Some ideas are developed concerning solar flares which have been presented earlier by the author (Schatzman, 1966a). Emphasis is laid on the problem of energy transport; from the energy supply to the region of the optical flare, on the storage of low energy cosmic ray particles in a magnetic bottle before the beginning of the optical flare, and the ...
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Some ideas are developed concerning solar flares which have been presented earlier by the author (Schatzman, 1966a). Emphasis is laid on the problem of energy transport; from the energy supply to the region of the optical flare, on the storage of low energy cosmic ray particles in a magnetic bottle before the beginning of the optical flare, and the ...
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On the infrared observations of stellar flares
Astrophysics and Space Science, 1979In connection with the appearance of the first results of infrared observations of stellar flares, a more elaborate analysis ofnegative infrared flares as a phenomenon, predicted by the fastelectron hypothesis, has been carried out. As a result, the wavelength regions of negative flares are established for the stars of different spectral types as well ...
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Stellar Flares: Observations and Modelling
1992Increasing observational evidence shows that stellar flares, especially those on M dwarf stars, have many similarities with solar flares. Their energies, however, can be many orders of magnitude larger. Observations of stellar flares at all wavelengths from X-rays to the radio are reviewed stressing the similarities and differences with respect to the ...
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