Results 71 to 80 of about 1,141,583 (297)

The Influence of Solar Flares on the Lower Solar Atmosphere: Evidence from the Na D Absorption Line Measured by GOLF/SOHO [PDF]

open access: yes, 2010
Solar flares presumably have an impact on the deepest layers of the solar atmosphere and yet the observational evidence for such an impact is scarce.
A. Berlicki   +29 more
core   +1 more source

Two Types of Confined Solar Flares

open access: yesAstrophysical Journal, 2019
With the aim of understanding the physical mechanisms of confined flares, we selected 18 confined flares during 2011–2017, and first classified them into two types based on their different dynamic properties and magnetic configurations. “Type I” confined
Ting Li   +3 more
semanticscholar   +1 more source

Radiation hydrodynamics in solar flares [PDF]

open access: yesInternational Astronomical Union Colloquium, 1986
AbstractSolar flares are currently understood as the explosive release of energy stored in the form of stressed magnetic fields. In many cases, the released energy seems to take the form of large numbers of electrons accelerated to high energies (the nonthermal electron “thick target” model), or alternatively plasma heated to very high temperatures ...
openaire   +4 more sources

Alternative Waiting Time Statistics for the Lu and Hamilton Avalanche Model

open access: yesThe Astrophysical Journal, 2023
The solar corona hosts many explosive events. Among them, flares are some of the most energetic, rapidly releasing huge amounts of energy and, in the case of the largest ones, producing coronal mass ejections that have the potential to harm life on our ...
Matías Kychenthal, Laura F. Morales
doaj   +1 more source

The flaring and quiescent components of the solar corona

open access: yes, 2008
The solar corona is a template to understand stellar activity. The Sun is a moderately active star, and its corona differs from active stars: active stellar coronae have a double-peaked EM(T) with the hot peak at 8-20 MK, while the non flaring solar ...
Argiroffi   +39 more
core   +2 more sources

Insights Into the Light‐Driven Conversion of Methane: Mechanisms, Characterization, and Perspective

open access: yesEcoEnergy, EarlyView.
Methane can be converted into value‐added products, offering a sustainable and economically viable approach to energy and carbon use. Photocatalytic methane conversion under mild conditions is an effective method for activating methane. This review outlines key mechanisms for C–H bond activation, categorizes products from methane conversion, and ...
Jiayi Chen   +3 more
wiley   +1 more source

Turbulence, complexity, and solar flares [PDF]

open access: yesAdvances in Space Research, 2010
The issue of predicting solar flares is one of the most fundamental in physics, addressing issues of plasma physics, high-energy physics, and modelling of complex systems. It also poses societal consequences, with our ever-increasing need for accurate space weather forecasts.
Paul A. Conlon   +2 more
openaire   +3 more sources

The Efficiency of Electron Acceleration during the Impulsive Phase of a Solar Flare

open access: yesThe Astrophysical Journal Letters, 2023
Solar flares are known to be prolific electron accelerators, yet identifying the mechanism(s) for such efficient electron acceleration in solar flare (and similar astrophysical settings) presents a major challenge.
Eduard P. Kontar   +3 more
doaj   +1 more source

Conditions for arrival of solar energetic protons in Earth after strong solar flares

open access: yesSolar-Terrestrial Physics, 2022
We analyze the Sun-to-Earth transport of energetic protons accelerated in solar flares. We use a model which assumes that protons move earthward in the Parker electromagnetic field.
Kichigin G. N.   +2 more
doaj   +1 more source

Clean development mechanisms in Latin America: Efficiency analysis of energy‐generating projects

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract This research addresses two key questions related to Clean Development Mechanism (CDM) This research aimed to address two research questions related to CDM projects focused on energy generation in Latin America. The first question aimed to identify the most efficient projects carried out in this region, while the second question sought to ...
Antonio Carlos Pacagnella Junior   +4 more
wiley   +1 more source

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