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Descriptive study of X-class flares released in the year 2014, during the double peak of SC-24

Published online by Cambridge University Press:  09 September 2016

Ahmed A. Hady ,
Marwa H. Mostafa  and
Susan W. Samwel
Ahmed A. Hady
Affiliation:
Department of Astronomy & Space and Meteorology, Faculty of Science, Cairo University Giza, Egypt email: [email protected]
Marwa H. Mostafa
Affiliation:
Department of Astronomy & Space and Meteorology, Faculty of Science, Cairo University Giza, Egypt email: [email protected]
Susan W. Samwel
Affiliation:
National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt
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Abstract

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During the declining phase of the Solar cycle 24, a new peak appeared on January 7, 2014. The release of x-class flares, with the high energetic particles, were found to be more intense than that occurred during the main peak of the same cycle. Few X-class flares were released, lately, during the year 2014. We note that during the last 5 solar cycles, a new peak has appeared, releasing high energetic particles and X-class solar flares, which are called the secondary peak or the double peak of solar cycle. The aim of this descriptive study is to follow the morphological and magnetic changes of the active region before, during, and after the production of X-class flares according to data analysis. Furthermore, the causes of the release of such eruptive storms have been discussed for the period, year 2014, during the double peak of the solar cycle 24.

Keywords

Solar cycle 24solar activityX-class flaressolar energetic particles
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 330 - 332
Copyright
Copyright © International Astronomical Union 2016 

References

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