Results 61 to 70 of about 133 (107)

Microwave Bright Points with Multiple Periodic Oscillations in the Solar Polar Coronal Hole during Solar Cycle Minimum

The Astrophysical Journal
During solar cycle minimum, polar coronal holes show a prominent radio brightening cap. The analysis of polar microwave enhanced radiation in polar coronal holes is helpful for understanding the magnetic field characteristics and the origin of the solar ...
Jing Huang, Satoshi Masuda, Baolin Tan, Yin Zhang, Shangbin Yang, Shuhong Yang, Yuanyong Deng   +6 more
doaj   +1 more source

Giant Postflare Loops in Active Regions with an Extremely Strong Coronal Magnetic Field

The Astrophysical Journal
We report for the first time the detection of thermal free–free emission from post-flare loops at 34 GHz in images from the Nobeyama Radioheliograph. We studied eight loops, seven of which were from regions with an extremely strong coronal magnetic field
Costas E. Alissandrakis, Gregory D. Fleishman, Viktor V. Fedenev, Stephen M. White, Alexander T. Altyntsev   +4 more
doaj   +1 more source

The Diagnostic Temperature Discrepancy as Evidence for Non-Maxwellian Coronal Electrons

The Open Journal of Astrophysics
Two independent electron temperature diagnostics applied to the quiet solar corona yield systematically different results. Radio brightness temperatures from the Nançay Radioheliograph indicate Tₑ ≈ 0.6 MK, while hydrostatic scale-height modeling of the ...
Victor Edmonds
doaj   +1 more source

Long-term Solar Activity Studies using Microwave Imaging Observations and Prediction for Cycle 25. [PDF]

J Atmos Sol Terr Phys, 2018
Gopalswamy N, Mäkelä P, Yashiro S, Akiyama S.   +3 more
europepmc   +1 more source

Loss-cone instability modulation due to a magnetohydrodynamic sausage mode oscillation in the solar corona. [PDF]

Nat Commun, 2019
Carley EP, Hayes LA, Murray SA, Morosan DE, Shelley W, Vilmer N, Gallagher PT.   +6 more
europepmc   +1 more source

On-Disc Observations of Flux Rope Formation Prior to Its Eruption. [PDF]

Sol Phys, 2017
James AW, Green LM, Palmerio E, Valori G, Reid HAS, Baker D, Brooks DH, van Driel-Gesztelyi L, Kilpua EKJ.   +8 more
europepmc   +1 more source

Large-scale Globally Propagating Coronal Waves. [PDF]

Living Rev Sol Phys, 2015
Warmuth A.
europepmc   +1 more source

8-CM RADIOHELIOGRAPH

8-CM RADIOHELIOGRAPH
An 8-cm radioheliograph which has been under construction since 1972 is almost completed. It has a maximum resolving power of 1.5 .arc min. and can be operated in various operational modes combined with the existing high-resolution compound interferometer. The minimum time necessary for taking a map is 40 seconds. A two-dimensional mapping will be used
openaire  

Understanding the Physical Nature of Coronal "EIT Waves". [PDF]

Sol Phys, 2017
Long DM, Bloomfield DS, Chen PF, Downs C, Gallagher PT, Kwon RY, Vanninathan K, Veronig AM, Vourlidas A, Vršnak B, Warmuth A, Žic T.   +11 more
europepmc   +1 more source

Solar Coronal Jets: Observations, Theory, and Modeling. [PDF]

Space Sci Rev, 2016
Raouafi NE, Patsourakos S, Pariat E, Young PR, Sterling A, Savcheva A, Shimojo M, Moreno-Insertis F, DeVore CR, Archontis V, Török T, Mason H, Curdt W, Meyer K, Dalmasse K, Matsui Y.   +15 more
europepmc   +1 more source