Landscape of Coronal X-Ray Variability and Cycles
Coronal (1–10 MK) X-rays display dramatic variability over the Sun’s iconic 11 yr magnetic dynamo cycle: already a factor of 4 in the soft 0.1–2.4 keV “ROSAT band,” soaring to more than 100 at harder energies (>10 keV).The high-energy variations impact heliospheric space weather (SW); presumably likewise for host-star analogs.In an effort