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Konus- Wind and Helicon- Coronas-F observations of solar flares
Frederiks, D. D.; Svinkin, D. S.; Aptekar, R. L. +7 more
Results of solar flare observations obtained in the Konus-Wind experiment from November, 1994 to December, 2013 and in the Helicon Coronas-F experiment during its operation from 2001 to 2005, are presented. For the periods indicated Konus-Wind detected in the trigger mode 834 solar flares, and Helicon-Coronas-F detected more than 300 solar flares.…
Variation in the statistical properties of IMF direction fluctuations during the 22-year solar magnetic cycle
Erofeev, D. V.
The variation in the IMF direction distribution during the 22-year solar magnetic cycle has been studied. Data obtained in near-Earth orbits and measurements in the heliospheric regions located far from the Earth, performed with the Helios and Ulysses spacecraft devices, have been analyzed. It has been found that the correlation between the azimut…
Weak solar flares with a detectable flux of hard X rays: Specific features of microwave radiation in the corresponding active regions
Livshits, M. A.; Grigor'eva, I. Yu.
The emission of very weak flares was registered at the Suzaku X-ray observatory in 2005–2009. The photon power spectrum in the 50–110 keV range for a number of these phenomena shows that some electrons accelerate to energies higher than 100 keV. The corresponding flares originate in active regions (ARs) with pronounced sunspots. As in the case of …