Quasi-periodic, fast-mode propagating (QFP) wave trains in the corona have been studied
intensively over the last decade, thanks to the full-disk, high spatio-temporal resolution, and …

We introduce how the catastrophe model for solar eruptions predicted the formation and
development of the long current sheet (CS) and how the observations were used to …

Magnetic reconnection is commonly considered to be a mechanism of solar (eruptive) flares.
A deeper study of this scenario reveals, however, a number of open issues. Among them is …

On 2017 September 10, a major eruption on the west solar limb produced a class X-8.2 flare
and a superfast coronal mass ejection (CME). During the eruptive process, the geometric …

The mechanism that accelerates particles to the energies required to produce the observed
high-energy impulsive emission in solar flares is not well understood. Drake et al. proposed …

We report decaying quasi-periodic intensity oscillations in the X-ray (6–12 keV) and extreme-
ultraviolet (EUV) channels (131, 94, 1600, 304 Å) observed by the Fermi Gamma-ray Burst …

We analyze and interpret the oscillatory signal in the decay phase of the U-band light curve
of a stellar megaflare observed on 2009 January 16 on the dM4. 5e star YZ CMi. The …

We explore the similarity and difference of the quasi-periodic pulsations (QPPs) observed in
the decay phase of solar and stellar flares at X-rays. We identified 42 solar flares with …

Based on our recent MHD simulations, a conception of the successive merging of plasmoids
and fragmentation in the current sheet in the standard flare model is presented. Then, using …

Observational evidence is presented for the merging of a downward-propagating plasmoid
with a looptop kernel during an occulted limb event on 2007 January 25. RHESSI light …