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High-speed streams in the solar wind during the last solar minimum

Published online by Cambridge University Press:  05 July 2012

Georgeta Maris ,
Ovidiu Maris ,
Constantin Oprea  and
Marilena Mierla
Georgeta Maris
Affiliation:
Institute of Geodynamics of the Romanian Academy, RO-020032, Bucharest, Romania email: gmaris@geodin.ro
Ovidiu Maris
Affiliation:
Institute for Space Sciences, RO-077125 Bucharest, Romania
Constantin Oprea
Affiliation:
Institute of Geodynamics of the Romanian Academy, RO-020032, Bucharest, Romania email: gmaris@geodin.ro
Marilena Mierla
Affiliation:
Institute of Geodynamics of the Romanian Academy, RO-020032, Bucharest, Romania email: gmaris@geodin.ro Royal Observatory of Belgium, Brussels, Belgium Research Center for Atomic Physics and Astrophysics, Faculty of Physics, University of Bucharest, Romania
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Abstract

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The paper presents a statistical analysis of the fast solar wind streams during the last prolonged minimum. Defining a minimum phase as the period with the monthly relative sunspot numbers (smoothed values) having a value of less than 20, we considered for this analysis the interval February 2006 September 2010. The High-Speed Streams (HSSs) in the solar wind were determined by their main parameters: duration, maximum velocity, velocity gradient. A comparative analysis of the HSS dynamics during the last solar minimum with the previous solar minimum (1996-1997) concludes the paper.

Keywords

Sun: activity(Sun:) solar wind
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S286: Comparative Magnetic Minima: Characterizing quiet times in the Sun and Stars , October 2011 , pp. 229 - 233
Copyright
Copyright © International Astronomical Union 2012

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