Results 11 to 20 of about 41,536 (207)
The Magnetic Field in the Solar Atmosphere [PDF]
, 2014 This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere.
Solanki, Sami K. +2 more
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Micro-events in the active and quiet solar corona [PDF]
Advances in Space Research, 2003 The content of hot material in the corona is not constant. Soft X-ray and high-temperature EUV line observations show that new material, apparently heated and evaporated from the chromosphere, is frequently injected into the corona both in active and quiet regions. Active regions are found to exhibit transient brightenings, termed here microflares, due
Benz, Arnold O., Grigis, Paolo C.
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On Stellar Coronae and Solar Active Regions
The Astrophysical Journal, 2000 Based on Yohkoh Soft X-Ray Telescope (SXT) observations of the Sun near peak activity level obtained on 1992 January 6, we search for coronal structures that have emission measure distributions EM(T ) that match the observed stellar coronal emission measure distributions derived for the intermediate-activity stars v Eri (K2 V) and m Boo A (G8 V) from ...
Jeremy J. Drake +4 more
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Extracting the Temperature of a Coronal Loop in the Solar Active Region 11092 [PDF]
Iranian Journal of Astronomy and Astrophysics, 2018 Extracting the temperature of coronal loops is effective in the analysis of solar active region's loops and helps in better understanding of coronal events.
Narges Fathalian
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Self-Similar Signature of the Active Solar Corona within the Inertial Range of Solar-Wind Turbulence [PDF]
Physical Review Letters, 2007 We quantify the scaling of magnetic energy density in the inertial range of solar wind turbulence seen in-situ at 1AU with respect to solar activity. At solar maximum, when the coronal magnetic field is dynamic and topologically complex, we find self-similar scaling in the solar wind, whereas at solar mimimum, when the coronal fields are more ordered ...
Kiyani, K. +3 more
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Nature Communications, 2018 The solar corona heating mechanism is still subject to debate. Here, the authors report that impulsive reconnection can give rise to an active region corona that is compatible with extreme-ultraviolet observations.
Kai E. Yang +3 more
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Extreme ultraviolet observations of active regions in the solar corona [PDF]
Symposium - International Astronomical Union, 1968 The coronal features associated with solar active regions can be observed by recording images of the Sun at extreme ultraviolet (XUV) wavelengths. Pinhole cameras have been flown on stabilized sun-pointing ‘Skylark’ rockets to obtain broad-waveband XUV solar images.
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Solar activity and its evolution across the corona: recent advances [PDF]
Journal of Space Weather and Space Climate, 2013 Solar magnetism is responsible for the several active phenomena that occur in the solar atmosphere. The consequences of these phenomena on the solar-terrestrial environment and on Space Weather are nowadays clearly recognized, even if not yet fully understood.
Zuccarello +18 more
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The Missing Cool Corona in the Flat Magnetic Field around Solar Active Regions [PDF]
The Astrophysical Journal, 2021 Abstract Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) images the full solar disk in several extreme-ultraviolet (EUV) bands that are each sensitive to coronal plasma emissions of one or more specific temperatures.
Talwinder Singh +2 more
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The Astrophysical Journal, 2023 Coronal mass ejections (CMEs) can generate the most severe geomagnetic disturbances. One of the most critical factors affecting a CME’s geoeffectiveness is its trajectory. It is crucial to determine whether and when CME will hit Earth.
Grzegorz Michalek +3 more
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