منابع مشابه
Bayesian Inference for Identifying Solar Active Regions
The solar chromosphere consists of three classes plage, network, background which contribute differently to ultraviolet radiation reachina thn am-th ~.nl~r nhv&-iota cama intmwatd in --a “Y” U-V.&. Y”*yYJ”.“‘uY” .“A.8 .Y”YIVY”VU IY relating plage area and intensity to UV irradiante, as well as understanding the spatial and temporal evolution of plage shapes. We describe a data set of solar imag...
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Recent satellite measurements of the solar total irradiance (S) indicate that on time scales of days to months the solar constant varies by a few tenths of a percent. The predominant part of these variations can be explained by blocking of the upward solar flux by sunspots. The observations are consistent with current theoretical models of energy storage in which the energy blocked by the sunsp...
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The purpose of this letter is to address a blind-spot in our knowledge of solar active region statistics. To the best of our knowledge there are no published results showing the variation of the Mount Wilson magnetic classifications as a function of solar cycle based on modern observations. We show statistics for all active regions reported in the daily Solar Region Summary from 1992 January 1 ...
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Resonance scattering has often been invoked to explain the disagreement between the observed and predicted line ratios of Fe XVII λ15.01 to Fe XVII λ15.26 (the “3C/3D” ratio). In this process photons of λ15.01, with its much higher oscillator strength, are preferentially scattered out of the line of sight, thus reducing the observed line ratio. Recent laboratory measurements, however, have foun...
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Context. We study the acceleration and radiation of electrons and ions interacting with multiple small-scale dissipation regions resulting from the magnetic energy release process. Aims. We aim to calculate the distribution functions of the kinetic energy of the particles and the X-ray spectra and γ-ray fluxes produced by the accelerated particles. Methods. The evolution of the magnetic energy ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2017
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aa7ddf