000006511 001__ 6511
000006511 005__ 20231101214502.0
000006511 037__ $$aCTALK-2023-0118
000006511 100__ $$aLim, D.
000006511 245__ $$aEnergy properties of transverse oscillations of solar coronal loops
000006511 260__ $$c2023
000006511 269__ $$c2023-06-26
000006511 520__ $$aTransverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager on board Solar Orbiter. We perform a meta-analysis by considering the oscillation parameters reported in the literature. Motivated by the power law of the velocity power spectrum of propagating transverse waves detected with CoMP, we consider the distribution of energy fluxes as a function of oscillation frequencies and the distribution of the number of oscillations as a function of energy fluxes and energies. These distributions are described as a power law. We propose that the power-law slope (δ = −1.40) of energy fluxes depending on frequencies could be used for determining whether high-frequency oscillations dominate the total heating (δ < 1) or not (δ > 1). In addition, we found that the oscillation number distribution depending on energy fluxes has a power-law slope of α = 1.00, being less than 2, which means that oscillations with high energy fluxes provide the dominant contribution to the total heating. It is shown that, on average, higher energy fluxes are generated from higher frequency oscillations. The total energy generated by transverse oscillations ranges from about 1020 to 1025 erg, corresponding to the energies for nanoflare, picoflare, and femtoflare. The respective slope results imply that high frequency oscillations could provide the dominant contribution to total coronal heating generated by decayless transverse oscillations.
000006511 594__ $$aSTCE
000006511 700__ $$aVan Doorsselaere, T.
000006511 700__ $$aBerghmans, D.
000006511 773__ $$tWaves and Instabilities in the Solar Atmosphere, Newcastle upon Tyne
000006511 8560_ $$fdaye.lim@ksb-orb.be
000006511 906__ $$aContributed
000006511 980__ $$aCTALKCONT