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Solar Physics

, Volume 289, Issue 8, pp 3121–3135 | Cite as

Statistical Survey of Type III Radio Bursts at Long Wavelengths Observed by the Solar TErrestrial RElations Observatory (STEREO)/Waves Instruments: Radio Flux Density Variations with Frequency

  • V. Krupar
  • M. Maksimovic
  • O. Santolik
  • E. P. Kontar
  • B. Cecconi
  • S. Hoang
  • O. Kruparova
  • J. Soucek
  • H. Reid
  • A. Zaslavsky
Article
First Online:
Received:
Accepted:

Abstract

We have performed a statistical study of 152 Type III radio bursts observed by Solar TErrestrial RElations Observatory (STEREO)/Waves between May 2007 and February 2013. We investigated the flux density between 125 kHz and 16 MHz. Both high- and low-frequency cutoffs were observed in 60 % of events, suggesting an important role of propagation. As already reported by previous authors, we observed that the highest flux density occurs at 1 MHz on both spacecraft. We developed a simplified analytical model of the flux density as a function of radial distance and compared it with the STEREO/Waves data.

Keywords

Solar radio emissions Plasma radiation 
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Notes

Acknowledgements

The authors would like to thank the many individuals and institutions who contributed to making STEREO/Waves possible. J. Soucek acknowledges the support of the Czech Grant Agency grant GAP209/12/2394. O. Kruparova thanks for the support of the Czech Grant Agency grant GP13-37174P. Financial support by STFC and by the European Commission through the “Radiosun” (PEOPLE-2011-IRSES-295272) is gratefully acknowledged (E.P. Kontar). O. Santolik and V. Krupar acknowledge the support of the Czech Grant Agency grant GAP205/10/2279.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • V. Krupar
    • 1
  • M. Maksimovic
    • 2
  • O. Santolik
    • 1
    • 3
  • E. P. Kontar
    • 4
  • B. Cecconi
    • 2
  • S. Hoang
    • 2
  • O. Kruparova
    • 1
  • J. Soucek
    • 1
  • H. Reid
    • 4
  • A. Zaslavsky
    • 2
  1. 1.Institute of Atmospheric Physics ASCRPragueCzech Republic
  2. 2.LESIA, UMR CNRS 8109Observatoire de ParisMeudonFrance
  3. 3.Faculty of Mathematics and PhysicsCharles UniversityPragueCzech Republic
  4. 4.Department of Physics and AstronomyUniversity of GlasgowGlasgowUK

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