Affiliation:
1. Crimean Astrophysical Observatory
2. Nizhny Novgorod State University of Architecture and Civil Engineering
Abstract
The X9.3 solar flare that occurred on September 6, 2017 is considered. The study of variations in the properties of small-scale fluctuations in the probability density of solar X-ray fluxes from the GEOS spacecraft made it possible to identify a set of events that repeat before the flare. A series of 1 to 8 precursors precedes the outbreak 20–70 hours before.