  The working principle of axion helioscopes can be behind unexpected solar
X-ray emission, being associated with solar magnetic fields, which become the
catalyst. Solar axion signals can be transient brightenings as well as
continuous radiation. The energy range below 1 keV is a window of opportunity
for direct axion searches. (In)direct signatures support axions or the like as
an explanation of striking behaviour of X-rays from the Sun.
