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Comparison of solar activity during last two minima on turn of Activity Cycles 22/23 and 23/24

Published online by Cambridge University Press:  18 July 2013

Magdalena Gryciuk ,
Szymon Gburek ,
Marek Siarkowski ,
Piotr Podgorski ,
Janusz Sylwester  and
Frantisek Farnik
Magdalena Gryciuk
Affiliation:
Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland, e-mail: mg@cbk.pan.wroc.pl
Szymon Gburek
Affiliation:
Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland, e-mail: mg@cbk.pan.wroc.pl
Marek Siarkowski
Affiliation:
Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland, e-mail: mg@cbk.pan.wroc.pl
Piotr Podgorski
Affiliation:
Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland, e-mail: mg@cbk.pan.wroc.pl
Janusz Sylwester
Affiliation:
Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland, e-mail: mg@cbk.pan.wroc.pl
Frantisek Farnik
Affiliation:
Astronomical Institute, Ondrejov Observatory, Czech Republic
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Abstract

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The subject of our work is the review and comparison of solar activity during the last two solar minima that occurred between recent activity cycles. We use the soft X-ray global solar corona observations covering the two nine-months long time intervals in 1997/98 and 2009. Data from RF15-I multichannel photometer are used for the penultimate minimum. For the last unusually deep and prolonged solar activity minimum in 2009 the data from SphinX spectrophotometer are used. Comparison of measurements from both minima takes place in the overlapping energy range 2–15 keV. We focus on the active region formation, evolution and flaring productivity during respective minima.

Keywords

Sun: activitySun: coronaSun: X-raysgamma rays
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 65 - 66
Copyright
Copyright © International Astronomical Union 2013 

References

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Sylwester, J., Kuzin, S., Kotov, Yu. D., Farnik, F., & Reale, F. 2008, J. Astrophys. Astron., 29, 339 CrossRefGoogle Scholar