Results 41 to 50 of about 2,433 (297)
Solar and Stellar Flares: Frequency, Active Regions, and Stellar Dynamo
The Astrophysical Journal, 2022 Abstract We demonstrate that for weak flares the dependence of their frequency occurrence on spottedness can be rather weak. The fact is that such flares can occur in both small and large active regions. At the same time, powerful large flares of classes M and X occur much more often in large active regions. In energy estimates, the mean
M. M. Katsova +3 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a debris disk. We report on 73 unique flares between the X-ray to optical data.
Isaiah I. Tristan +15 more
doaj +1 more source
The Astrophysical Journal, 1982 We study the response of certain spectral signatures of stellar flares (such as Balmer line profiles and the broad-band continuum) to changes in atmospheric structure which might result from physical processes akin to those thought to occur in solar flares.
L. E. Cram, D. T. Woods
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Scaling Laws of Solar and Stellar Flares [PDF]
The Astrophysical Journal, 2008 9 Figs., (paper in press, The Astrophsycial Journal)
Aschwanden, Markus J. +2 more
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Advances in Understanding Solar and Stellar Flares [PDF]
, 2016 Flares result from the sudden reconnection and relaxation of magnetic fields in the coronae of stellar atmospheres. The highly dynamic atmospheric response produces radiation across the electromagnetic spectrum, from the radio to X-rays, on a range of ...
Kowalski, Adam F. +1 more
core +1 more source
Stellar Chromospheric Variability [PDF]
, 2021 Cool stars with convective envelopes of spectral types F and later tend to exhibit magnetic activity throughout their atmospheres. The presence of strong and variable magnetic fields is evidenced by photospheric starspots, chromospheric plages and ...
Richard de Grijs, Devika Kamath
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Power-law Distribution of Solar Cycle–modulated Coronal Jets
The Astrophysical Journal Supplement Series, 2023 Power-law distributions have been studied as a significant characteristic of nonlinear dissipative systems. Since discovering the power-law distribution of solar flares that was later extended to nanoflares and stellar flares, it has been widely accepted
Jiajia Liu +8 more
doaj +1 more source
Empirical Models of Stellar Flares : Constraints on Flare Theories [PDF]
International Astronomical Union Colloquium, 1983 ABSTRACTA review is presented on empirical flare models of UV Cet type stars based upon optical,UV, X-ray, and radio observations. The observational constraints on the flare energetics, nature of radiation sources, and flare structures are discussed, with special attention to the geometrical dimension and the magnetic field of the flaring region.
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Blackbody temperature of 200+ stellar flares observed with the CoRoT satellite [PDF]
, 2022 We estimated blackbody temperature for 209 flares observed at 69 F-K stars, significantly increasing the number of flare temperature determinations. We used the Blue and Red channels obtained by the 27 cm telescope of the CoRoT satellite at high cadence ...
Ferreira, Bernardo P. L. +2 more
core +2 more sources
Rheumatologic Manifestations of Patients With Type B Insulin Resistance
Arthritis Care &Research, EarlyView.Objective The objectives of this study were to identify laboratory and clinical features associated with type B insulin resistance (TBIR), a rare condition caused by autoantibodies that inhibit the insulin receptor, most frequently occurring in the setting of systemic lupus erythematosus (SLE), and to increase awareness of this rare, life‐threatening ...
S. Amara Ogbonnaya +4 more
wiley +1 more source