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Bogomolov A. V. Denisov Yu. I. Kuznetsov S. N. Lisin D. V. Logachev Yu. I. Morozov O. V. Myagkova I. N. Svertilov S. I. Zhitnik I. A. Ignat'ev A. P. Oparin S. N. Pertsov A. A. Stepanov A. I. Tindo I. P. 《Solar System Research》2003,37(2):112-120
The first results of the experiment with the SPR-N hard X-ray (20–100 keV) polarimeter onboard the Coronas-F observatory (the experiment started on August 15, 2001) are presented. Hard X-ray radiation was detected from several solar flares. The spectral and temporal parameters were determined and the polarization was estimated. Comparison with the GOES observations of thermal X-ray radiation shows that hard X-ray bursts occur at the growth phase of the thermal radiation and that they are associated with the bremsstrahlung of energetic electrons precipitating into the solar atmosphere. 相似文献