Results 41 to 50 of about 11,539 (164)
Microwave structure of the quiet sun
The Astrophysical Journal, 1988 Two-frequency VLA observations of the quiet sun were obtained on July 13, 1985. Although the 4.9 GHz full-day synthesis maps correspond closely to images made in H-alpha, Ca II K, and magnetograms, the correspondence is much less apparent on shorter time scale maps, and it is suggested that the discrepancy is due to nearly continual variations in the ...
Dale E. Gary, Harold Zirin
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HOMOLOGOUS CYCLONES IN THE QUIET SUN
The Astrophysical Journal, 2014 Through observations with the Solar Dynamics Observatory Atmospheric Imaging Assembly (AIA) and Helioseismic and Magnetic Imager, we tracked one rotating network magnetic field (RNF) near the solar equator. It lasted for more than 100 hr, from 2013 February 23 to 28. During its evolution, three cyclones were found to be rooted in this structure.
Xinting Yu +4 more
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SELF-CANCELLATION OF EPHEMERAL REGIONS IN THE QUIET SUN [PDF]
The Astrophysical Journal, 2012 6 pages, 4 figures, accepted for publication in ...
Yang, Shuhong +3 more
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Probing Lorentz Invariance Violation with Absorption of Astrophysical γ-Rays by Solar Photons
The Astrophysical JournalWe compute in detail the absorption optical depth for astrophysical γ -ray photons interacting with solar photons to produce electron–positron pairs. This effect is greatest for γ -ray sources at small angular distances from the Sun, reaching optical ...
Justin D. Finke, Parshad Patel
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EXCITATION OF ACOUSTIC WAVES BY VORTICES IN THE QUIET SUN [PDF]
The Astrophysical Journal, 2011 10 pages, 5 figure, submitted to ...
Kitiashvili, I. N. +3 more
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What Can DKIST/DL-NIRSP Tell Us about Quiet-Sun Magnetism?
The Astrophysical JournalQuiet-Sun regions cover most of the Sun's surface; their magnetic fields contribute significantly to solar chromospheric and coronal heating. However, characterizing the magnetic fields of the quiet Sun is challenging due to their weak polarization ...
Jiayi Liu +3 more
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Quiet Sun Magnetism from ViSP Data Multiline Inversions Around 630.1 nm
The Astrophysical JournalQuiet Sun magnetism plays an important role in the global energy balance of the solar atmosphere. The study of the magnetism of the quiet Sun has been a major effort in the last decades, and, as a result, very important advances in our knowledge have ...
J. C. Trelles Arjona
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Long-lived particles and the quiet Sun
Physical Review DThe nuclear reaction network within the interior of the Sun is an efficient MeV physics factory and can produce long-lived particles generic to dark sector models. In this work we consider the sensitivity of satellite instruments, primarily the RHESSI spectrometer, that observe the quiet Sun in the MeV regime where backgrounds are low.
R. Andrew Gustafson +3 more
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The Astrophysical JournalSolar filament/prominence eruptions can significantly perturb geospace when originating from favorable source locations and directions. While stellar analogs have been recently reported, the disk locations and magnetic environments of their source ...
Junyi Zhang +9 more
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Global disturbance of Earth’s magnetosphere and its connection with space weather
Solar-Terrestrial Physics, 2020 This paper deals with extreme conditions of the global magnetosphere disturbance: very quiet and greatly disturbed, and their relationship with interplanetary medium parameters.
Kurazhkovskaya N.A.
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