Relationship of type III radio bursts with quasi-periodic pulsations in a solar flare
| Autor: | Irina Myagkova, L. K. Kashapova, Elena G. Kupriyanova, Hamish A. S. Reid |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Solar flare Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Flux Astronomy and Astrophysics Magnetic reconnection Astrophysics 01 natural sciences Radio spectrum law.invention Amplitude Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science law Modulation 0103 physical sciences 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Microwave 0105 earth and related environmental sciences Flare |
| ISSN: | 0038-0938 |
| Popis: | We studied a solar flare with pronounced quasi-periodic pulsations detected in the microwave, X-ray, and radio bands. We used the methods of correlation, Fourier, and wavelet analyses to examine the temporal fine structures and relationships between the time profiles in each wave band. We found that the time profiles of the microwaves, hard X-rays and type III radio bursts vary quasi-periodically with the common period of 40-50 s. The average amplitude of the variations is high, above 30% of the background flux level and reaching 80% after the flare maximum. We did not find the periodicity in either the thermal X-ray flux component or source size dynamics. Our findings indicate that the detected periodicity is likely to be associated with periodic dynamics in the injection of non-thermal electrons, that can be produced by periodic modulation of magnetic reconnection. 13 pages, 5 figures |
| Databáze: | OpenAIRE |
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