Results 121 to 130 of about 1,141,583 (297)
From Coronal Observations to MHD Simulations, the Building Blocks for 3D Models of Solar Flares (Invited Review) [PDF]
, 2015 Solar flares are energetic events taking place in the Sun’s atmosphere, and their effects can greatly impact the environment of the surrounding planets. In particular, eruptive flares, as opposed to confined flares, launch coronal mass ejections into the
M. Janvier, G. Aulanier, P. Démoulin
semanticscholar +1 more source
Particle Acceleration in Solar Flares [PDF]
International Astronomical Union Colloquium, 1989 AbstractParticle acceleration during solar flares is a complex process where the main ‘actors’ (Direct (D.C.) or turbulent electric fields) are hidden from us. It is easy to construct a successful particle accelertion model if we are allowed to impose on the flaring region arbitrary conditions (e.g., strength and scale length of the D.C.
openaire +3 more sources
Fine structure events in microwave emission during solar minimum
Solar-Terrestrial Physics, 2019 The solar minimum is a period with a relatively smaller number of sunspots and solar eruptions, and has been less studied before. Since the radio signal rapidly responds to the change of solar plasma and magnetic field, we perform a comprehensive ...
Chengming Tan +6 more
doaj +1 more source
Risk Analysis, EarlyView.Abstract There are two separate conceptualizations for assessing existential risks: Planetary Boundaries (PBs) and global catastrophic risks (GCRs). While these concepts are similar in principle, their underpinning literatures tend not to engage with each other.
Eoin McLaughlin, Matthias Beck
wiley +1 more source
Solar flares, coronal mass ejections and solar energetic particle event characteristics
, 2016 A new catalogue of 314 solar energetic particle (SEP) events extending over a large time span from 1984 to 2013 has been compiled. The properties as well as the associations of these SEP events with their parent solar sources have been thoroughly ...
A. Papaioannou +8 more
semanticscholar +1 more source
Comparison of UV Ceti Flares with Solar Flares [PDF]
Symposium - International Astronomical Union, 1975 During several intervals totalling 26 h, 84 flares of UV Ceti were observed using a photometer with 1 s time resolution. Using solar flare terminology, all flares of UV Ceti observed here can be characterized by a typical light curve, consisting of a preflare, a flash and a slow phase.
W. Haupt, W. Schlosser
openaire +2 more sources
Solar-geophysical data number 496, December 1985. Part 2: (Comprehensive reports). Data for June 1985, January-May 1985 and miscellanea [PDF]
Contents include the detailed index for 1985; data for June 1985 (solar flares, solar radio bursts at fixed frequencies, solar X-ray radiation from GOES satellite graphs, mass ejections from the sun, and active prominences and filaments); data for ...
Coffey, H. E.
core +1 more source
Cycle 23 Variation in Solar Flare Productivity
, 2013 The NOAA listings of solar flares in cycles 21-24, including the GOES soft X-ray magnitudes, enable a simple determination of the number of flares each flaring active region produces over its lifetime.
Fletcher, Lyndsay +2 more
core +1 more source
Embracing the politics of transformation: Policy action as “battle‐settlement events”
Review of Policy Research, EarlyView.Abstract Societal transformations for addressing climate change are intensely contested and at risk of resistance and backlash to ambitious policy action. But they are frequently modeled through heuristics such as S‐curves which abstract from such conflicts, assuming increasing returns to scale as a driver of transformations.
James Patterson, Matthew Paterson
wiley +1 more source
, 2016 Aims. We derive constraints on energy release, transport and conversion processes in solar flares based on a detailed characterization of the physical parameters of both the thermal plasma and the accelerated nonthermal electrons based on X-ray ...
A. Warmuth, G. Mann
semanticscholar +1 more source