We present an overview of solar flares and associated phenomena, drawing upon a wide
range of observational data primarily from the RHESSI era. Following an introductory …

X-radiation from energetic electrons is the prime diagnostic of flare-accelerated electrons.
The observed X-ray flux (and polarization state) is fundamentally a convolution of the cross …

We present a homogeneous analysis of line and continuum emission from simultaneous
high-cadence spectra and photometry covering near-ultraviolet and optical wavelengths for …

The physical processes causing energy exchange between the Sun's hot corona and its
cool lower atmosphere remain poorly understood. The chromosphere and transition region …

Gamma-rays and neutrons are the only sources of information on energetic ions present
during solar flares and on properties of these ions when they interact in the solar …

This paper presents measurements of the energy radiated by the lower solar atmosphere, at
optical, UV, and EUV wavelengths, during an X-class solar flare (SOL2011-02-15T01: 56) in …

White-light stellar flares are now reported by the thousands in long-baseline, high-precision,
broad-band photometry from missions like Kepler, K2, and TESS. These observations are …

The optical and near-ultraviolet (NUV) continuum radiation in M-dwarf flares is thought to be
the impulsive response of the lower stellar atmosphere to magnetic energy release and …

We have developed a numerical model of flare heating due to the dissipation of Alfvénic
waves propagating from the corona to the chromosphere. With this model, we present an …

Particle acceleration in solar flares remains an outstanding problem in plasma physics and
space science. While the observed particle energies and timescales can perhaps be …