This paper presents the results of the first systematic analysis of the correlation between the activity cycles of repeating fast radio bursts (FRB 20180916B and FRB 20121102A) and Earth's geomagnetic activity (Kp and Dst indices). Using the epoch superposition method on a five-year observation period (2021–2026), we show that: 1) the magnetosphere responds to the 16.35-day FRB cycle with a delay of 2.6 ± 1.2 days; 2) during the crossing of the active phases of two sources, the response is amplified by approximately a factor of two; 3) the effects cannot be explained by solar activity, pointing to a resonant interaction mechanism. A hypothesis of tectonomagnetic resonance is proposed. A calendar of «cross-windows» for 2025–2027 is provided for experimental verification. The prospects of using Earth and Mars as detectors of cosmic signals are discussed, including the hypothesis of externally triggered geodynamo pumping.
Khismatulin et al. (Thu,) studied this question.