Results 61 to 70 of about 1,379,332 (142)

Features of correlation curves of the Siberian Radioheliograph

Solar-Terrestrial Physics
Correlation curves of the multi-frequency Siberian Radioheliograph (SRH) provide a sensitive indication and demonstrative representation of monitoring the microwave life of the active Sun.
Uralov Arkadiy, Lesovoi Sergey, Grechnev Victor, Globa Mariia   +3 more
doaj   +1 more source

Velocity and Density Fluctuations in the Quiet Sun Corona

The Astrophysical Journal
We investigate the properties and relationship between Doppler velocity fluctuations and intensity fluctuations in the off-limb quiet Sun corona. These are expected to reflect the properties of Alfvénic and compressive waves, respectively.
Michael Hahn, Xiangrong Fu, Stefan J. Hofmeister, Yifan Huang, Alexandros Koukras, Daniel Wolf Savin   +5 more
doaj   +1 more source

Hierarchical analysis of the quiet Sun magnetism

, 2014
Standard statistical analysis of the magnetic properties of the quiet Sun rely on simple histograms of quantities inferred from maximum-likelihood estimations.
M. J. Martínez González, A. Asensio Ramos   +1 more
core   +1 more source

The Plasma β in Quiet Sun Regions: Multi-instrument View

The Astrophysical Journal
A joint campaign of several spaceborne and ground-based observatories, such as the GREGOR solar telescope, the Extreme-ultraviolet Imaging Spectrometer (EIS), and the Interface Region Imaging Spectrograph (Hinode Observing Plan 381, 2019 October 11–22 ...
Jenny M. Rodríguez-Gómez, Christoph Kuckein, Sergio J. González Manrique, Jonas Saqri, Astrid Veronig, Peter Gömöry, Tatiana Podladchikova   +6 more
doaj   +1 more source

Inference of the physical parameters of Hα-absorbing plasma structures in the quiet Sun

Astronomy & Astrophysics
On-disk Hα light-absorbing plasma structures such as mottles, fibrils, filaments, and Hα jets are observable magnetohydrodynamic features in the upper solar chromosphere.
Chae Jongchul, Kang Juhyung, Lee Kyoung-Sun, Lim Eun-Kyung, Madjarska Maria S., Kwak Hannah   +5 more
doaj   +1 more source

Turbulent Suppression of Alfvénic Wave Resonances in Coronal Loops

The Astrophysical Journal
Alfvénic wave turbulence is a leading mechanism for explaining the heating of the solar corona and the acceleration of the solar wind. Alfvénic waves are observed to be prevalent throughout the inner corona.
Edris Tajfirouze, Richard Morton, Mahboubeh Asgari-Targhi   +2 more
doaj   +1 more source

Characterizing the Quiet Sun Scale Magnetic Field

, 2010
Observations with the Solar Optical Telescope on Hinode indicate that the Quiet Sun magnetic field occurs on every scale of convection including granulation.
Alan Title
core   +1 more source

Linear Polarization Features in the Quiet-Sun Photosphere: Structure and Dynamics. [PDF]

Sol Phys, 2018
Kianfar S, Jafarzadeh S, Mirtorabi MT, Riethmüller TL.   +3 more
europepmc   +1 more source

Brightness temperature and size of the quiet Sun at 34.5 MHz

, 2004
We present observations of the quiet Sun made at 34.5 MHz during the solar minimum period June–July 1986 and May–June 1987 with the Gauribidanur radio telescope and a grating array. The brightness temperature of the quiet Sun varied from $ 1.0$ $\times$
K. R. Subramanian
core   +1 more source

On the Existence of Long-period Decayless Oscillations in Short Active Region Loops

The Astrophysical Journal
Decayless kink oscillations, characterized by their lack of decay in amplitude, have been detected in coronal loops of varying scales in active regions, the quiet Sun, and coronal holes. Short-period (
Arpit Kumar Shrivastav, Vaibhav Pant, Rohan Kumar, David Berghmans, Tom Van Doorsselaere, Dipankar Banerjee, Elena Petrova, Daye Lim   +7 more
doaj   +1 more source