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Preliminary examination of October-December 2002 SONG (SOlar Neutron and\udGamma rays) data aboard the Russian CORONAS-F (Complex Orbital Near-Earth\udObservations of the Activity of the Sun) low-altitude satellite has revealed\udmany X-ray enhanced emissions (30–500 keV) in the slot region\ud(<i>L</i> ~ 2–3) between the Earth's radiation belts. In one case, CORONAS-F\uddata were analyzed when the intense hard X-ray emissions were seen westward\udof the South Atlantic Anomaly in a rather wide <i>L</i> shell range from 1.7 to\ud2.6. Enhanced fluxes observed on day 316 (12 November) were most likely\udassociated with a Major Severe Weather Outbreak in Eastern USA, producing\udextensive lightning flashes, as was documented by simultaneous optical\udobservations from space. We propose that whistler mode signals from these\udlightning discharges cause precipitation of energetic electrons from\udterrestrial trapped radiation belts, which, in turn, produce atmospheric X-rays\udin the Southern Hemisphere

Satellite observations of lightning-induced hard X-ray flux enhancements in the conjugate region