Solar flares are observed at all wavelengths from decameter radio waves to gamma-rays
beyond 1 GeV. This review focuses on recent observations in EUV, soft and hard X-rays …

High-energy X-rays and γ-rays from solar flares were discovered just over fifty years ago.
Since that time, the standard for the interpretation of spatially integrated flare X-ray spectra at …

We review basic theoretical concepts in particle acceleration, with particular emphasis on
processes likely to occur in regions of magnetic reconnection. Several new developments …

ABSTRACT The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) and
the Nobeyama Radioheliograph (NoRH) are used to investigate coronal hard X-ray and …

This review surveys hard X-ray emissions of non-thermal electrons in the solar corona.
These electrons originate in flares and flare-related processes. Hard X-ray emission is the …

Particles are accelerated to very high, non-thermal energies in solar and space plasma
environments. While energy spectra of accelerated electrons often exhibit a power law, it …

Observations of solar flares partially occulted by the solar limb provide diagnostics of
coronal hard X-ray (HXR) emissions in the absence of generally much brighter emissions …

An introduction into the subject of solar physics has been previously presented in the
textbook Physics of the Solar Corona by the same author, which covered most of the science …

We investigate electron acceleration by electric fields induced by cascading reconnections
in current sheets trailing coronal mass ejections via a test particle approach in the framework …

The newly developed X-ray visibility forward fitting technique is applied to the RHESSI data
of a limb flare to investigate the energy and height dependence on sizes, shapes, and …