Results 21 to 30 of about 42,046 (150)

Solar flares and energetic particles [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Solar flares are now observed at all wavelengths from γ -rays to decametre radio waves. They are commonly associated with efficient production of energetic particles at all energies. These particles play a major role in the active Sun because they contain a large amount of the energy released during flares ...
openaire   +4 more sources

The flaring and quiescent components of the solar corona

, 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, Bornmann, C. Argiroffi, Cargill, Cargill, Drake, Elias, F. Reale, Favata, G. Peres, Garcia, Güdel, Güdel, Güdel, Hudson, Klimchuk, Kosugi, Marino, Masuda, Ness, Orlando, Orlando, Orlando, Parenti, Parker, Peres, Peres, Raassen, Reale, S. Orlando, Sanz-Forcada, Sanz-Forcada, Sanz-Forcada, Scelsi, Testa, Testa, Testa, Tsuneta, Vaiana, Walter   +39 more
core   +2 more sources

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

, 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, A.H. Gabriel, A.O. Benz, B. Caccin, B. Schmieder, C.J. Schrijver, D. Block, D.B. Jess, E. Antonucci, G. Cessateur, G.H. Fisher, G.H. Fisher, H.S. Hudson, J. Aboudarham, J. Aboudarham, J. Leenaarts, J.H.M.J. Bruls, L. Fletcher, M. Kretzschmar, M.D. Ding, M.D. Ding, M.D. Ding, M.T. Eibe, P. Boumier, S. Turck-Chièze, T. Dudok de Wit, V. Archontis, W.Q. Gan, Y. Xu, Z. Svestka   +29 more
core   +1 more source

Radiation hydrodynamics in solar flares [PDF]

International 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

Turbulence, complexity, and solar flares [PDF]

Advances 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, R. T. James McAteer, Peter T. Gallagher   +2 more
openaire   +3 more sources

Retrofitting Low Carbon Aviation Fuels Processes From Natural Gas to Renewables Energy‐Based Systems

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT The aviation sector's dependence on high‐energy‐density fuels presents a challenge for decarbonization. This study evaluates the economic and environmental feasibility of retrofitting a gas‐to‐liquid (GTL) plant for low carbon aviation fuel (LCAF) production using solar electrification, an advanced reformer unit (CARGEN), and a hybrid ...
Yasmin Abdelkarim, Tagwa Musa, Mohamed S. Challiwala, Tala Katbeh, Hanif Choudhury, Mahmoud El‐Halwagi, Nimir O. Elbashir   +6 more
wiley   +1 more source

Global Properties of Solar Flares [PDF]

Space Science Reviews, 2011
This article broadly reviews our knowledge of solar flares. There is a particular focus on their global properties, as opposed to the microphysics such as that needed for magnetic reconnection or particle acceleration as such. Indeed solar flares will always remain in the domain of remote sensing, so we cannot observe the microscales directly and must ...
openaire   +4 more sources

Climate and political effects on agriculture: Empirical evidence from SSA

International Studies of Economics, EarlyView.
Abstract The most of Sub‐Saharan African (SSA) countries have been affected by climate change and food insecurity problems due to the reduction of production and productivity of cereal crops in the continent. The purpose of this research was to examine the short‐run and long‐run effects of climate change on agricultural productivity in 24 selected SSA ...
Defaru Adugna Feye, Amsalu Bedemo Beyene, Suchitra Krishna Kumar   +2 more
wiley   +1 more source

Solar flares: The impulsive phase [PDF]

Solar Physics, 1989
AbstractOnly during the previous solar cycle have systematic observations begun to be made with the sensitivity and time resolution, and the continuous coverage required to catch the impulsive phase and measure the rapid variations present in many wavelength ranges.
Brian R. Dennis, Richard A. Schwartz
openaire   +2 more sources

Uncovering Emotion in Youth Digital Civic Participation Around Climate Change: Entanglements of Fear, Despair, and Anger in Civic Practice

Science Education, EarlyView.
ABSTRACT Attention to emotion could offer insight into supporting the science‐informed civic participation of young people. We drew on sociocultural views of emotion, civic participation, and science literacies to examine digital civic media about climate change produced by youth during the 2020 U.S.
Lynne Zummo, Lea Hadzic, Emma Gargroetzi
wiley   +1 more source