We review the presence and signatures of the non-equilibrium processes, both non-
Maxwellian distributions and non-equilibrium ionization, in the solar transition region …

The origins of the various outbursts of hard X-rays from magnetars (highly magnetized
neutron stars) are still unknown. We identify instabilities in relativistic magnetospheres that …

To facilitate the study of solar flares and active regions, we have created a modeling
framework, the freely distributed GX Simulator IDL package, that combines 3D magnetic and …

The energy released in solar flares derives from a reconfiguration of magnetic fields to a
lower energy state, and is manifested in several forms, including bulk kinetic energy of the …

Particle acceleration in stellar flares is ubiquitous in the universe; however, our Sun is the
only astrophysical object where energetic particles and their source flares can both be …

We analyse particle acceleration in explosive reconnection events in magnetically
dominated proton–electron plasmas. Reconnection is driven by large-scale magnetic …

We analyze the spectra of high-temperature Fe xxiv lines observed by the Hinode/Extreme-
Ultraviolet Imaging Spectrometer (EIS) during the impulsive phase of the X8. 3-class flare on …

The solar active region 12673 produced two successive X-class flares (X2. 2 and X9. 3)
approximately 3 hr apart in 2017 September. The X9. 3 flare was the largest recorded solar …

We investigate the nature of the spectral line profiles for transition-region (TR) ions observed
with the Interface Region Imaging Spectrograph (IRIS). In this context, we analyzed an active …

The X-ray and radio flares observed in X-ray binaries and active galactic nuclei are
attributed to energetic electrons in the plasma ejecta from the accretion flows near the black …