The structure and dynamics of the solar corona is dominated by the magnetic field. In most
areas in the corona magnetic forces are so dominant that all non-magnetic forces such as …

Strong solar flares and coronal mass ejections, here defined not only as the bursts of
electromagnetic radiation but as the entire process in which magnetic energy is released …

Magnetic fields play a fundamental role in the structure and dynamics of the solar corona. As
they are driven by their footpoint motions on the solar surface, which transport energy from …

Current state-of-the-art spectrographs cannot resolve the fundamental spatial
(subarcseconds) and temporal (less than a few tens of seconds) scales of the coronal …

Hinode is Japan's third solar mission following Hinotori (1981–1982) and Yohkoh (1991–
2001): it was launched on 2006 September 22 and is in operation currently. Hinode carries …

While the photospheric magnetic field of our Sun is routinely measured, its extent into the
upper atmosphere is typically not accessible by direct observations. Here we present an …

Context. In order to better understand the underlying processes and prerequisites for solar
activity, it is essential to study the time evolution of the coronal magnetic field of solar active …

Solar flares are spectacular coronal events that release large amounts of energy. They are
classified as either eruptive or confined,, depending on whether they are associated with a …

In this work, we present results of a time-dependent data-driven numerical simulation
developed to study the dynamics of coronal active region magnetic fields. The evolving …

Context. The Helioseismic and Magnetic Imager (HMI) provides continuum images and
magnetograms with a cadence better than one per minute. It has been continuously …