Skip to main content
Log in

Polarization properties of low frequency electromagnetic cyclotron waves associated with magnetic clouds

  • Original Article
  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

Recent studies have revealed that there are a large number of low frequency electromagnetic cyclotron waves (ECWs) occurring in and around magnetic clouds (MCs) that are common magnetic structures in interplanetary space. Using magnetic field data from the STEREO spacecraft, this paper investigates polarization properties of ECWs associated with 120 MCs. Results show that the ECWs are highly transverse, strongly polarized waves with large ellipticities. Specifically, almost all of the waves take place with the ratios of transverse power to total power higher than 0.94, polarization degrees greater than 0.85, and ellipticities larger than 0.5. The mean values of these quantities can be up to 0.99, 0.96, 0.85, respectively. In particular, there is a tendency of ellipticities decreasing with respect to the wave normal angles for ECWs with left handed polarization. The decreasing tendency is consistent with the recent theory and simulation results.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Acknowledgements

This research was supported by NSFC under grant Nos. 41504131, 41674170, 41531071, 11373070, and the Key Laboratory of Solar Activity at CAS NAO (KLSA201703). This research was also sponsored by Key Scientific Research Project in Universities of Henan Province (Grant Nos. 17A170002 and 16A140016) and partly by the Plan For Scientific Innovation Talent of Henan Province. The authors thank NASA/GSFC for the use of data from STEREO, which are available freely via the Coordinated Data Analysis Web (http://cdaweb.gsfc.nasa.gov/cdaweb/istp_public/).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to G. Q. Zhao.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhao, G.Q., Feng, H.Q., Wu, D.J. et al. Polarization properties of low frequency electromagnetic cyclotron waves associated with magnetic clouds. Astrophys Space Sci 363, 49 (2018). https://doi.org/10.1007/s10509-018-3271-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10509-018-3271-8

Keywords

Navigation