Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes
Waves and oscillations have been observed in the Sun's atmosphere for over half a century.
While such phenomena have readily been observed across the entire electromagnetic …
While such phenomena have readily been observed across the entire electromagnetic …
Multiwavelength studies of MHD waves in the solar chromosphere: An overview of recent results
The chromosphere is a thin layer of the solar atmosphere that bridges the relatively cool
photosphere and the intensely heated transition region and corona. Compressible and …
photosphere and the intensely heated transition region and corona. Compressible and …
Magnetohydrodynamic waves in open coronal structures
D Banerjee, S Krishna Prasad, V Pant… - Space Science …, 2021 - Springer
Modern observatories have revealed the ubiquitous presence of magnetohydrodynamic
waves in the solar corona. The propagating waves (in contrast to the standing waves) are …
waves in the solar corona. The propagating waves (in contrast to the standing waves) are …
High-resolution observations of the shock wave behavior for sunspot oscillations with the interface region imaging spectrograph
H Tian, E DeLuca, KK Reeves, S McKillop… - The Astrophysical …, 2014 - iopscience.iop.org
We present the first results of sunspot oscillations from observations by the Interface Region
Imaging Spectrograph. The strongly nonlinear oscillation is identified in both the slit-jaw …
Imaging Spectrograph. The strongly nonlinear oscillation is identified in both the slit-jaw …
Solar coronal magnetic fields derived using seismology techniques applied to omnipresent sunspot waves
DB Jess, VE Reznikova, RSI Ryans, DJ Christian… - Nature Physics, 2016 - nature.com
Sunspots on the surface of the Sun are the observational signatures of intense
manifestations of tightly packed magnetic field lines, with near-vertical field strengths …
manifestations of tightly packed magnetic field lines, with near-vertical field strengths …
Empirical mode decomposition analysis of random processes in the solar atmosphere
DY Kolotkov, SA Anfinogentov… - Astronomy & …, 2016 - aanda.org
Context. Coloured noisy components with a power law spectral energy distribution are often
shown to appear in solar signals of various types. Such a frequency-dependent noise may …
shown to appear in solar signals of various types. Such a frequency-dependent noise may …
An inside look at sunspot oscillations with higher azimuthal wavenumbers
Solar chromospheric observations of sunspot umbrae offer an exceptional view of
magnetohydrodynamic wave phenomena. In recent years, a wealth of wave signatures …
magnetohydrodynamic wave phenomena. In recent years, a wealth of wave signatures …
Wave dynamics in a sunspot umbra
R Sych, VM Nakariakov - Astronomy & Astrophysics, 2014 - aanda.org
Context. Sunspot oscillations are one of the most frequently studied wave phenomena in the
solar atmosphere. Understanding the basic physical processes responsible for sunspot …
solar atmosphere. Understanding the basic physical processes responsible for sunspot …
Height variation of the cutoff frequency in a sunspot umbra
Context. In the solar atmosphere, the acoustic cutoff frequency is a local quantity that
depends on atmospheric height. It separates low-frequency evanescent waves from high …
depends on atmospheric height. It separates low-frequency evanescent waves from high …
Oscillations in a sunspot with light bridges
ABSTRACT The Solar Optical Telescope on board Hinode observed a sunspot (AR 11836)
with two light bridges (LBs) on 2013 August 31. We analyzed a two-hour Ca ii H emission …
with two light bridges (LBs) on 2013 August 31. We analyzed a two-hour Ca ii H emission …