EGU22-4121, updated on 04 Mar 2024
https://doi.org/10.5194/egusphere-egu22-4121
EGU General Assembly 2022
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Spatial Structure of CIRs

Gergely Koban1,2, Andrea Opitz1, Zoltan Nemeth1, Gabor Facsko1, Akos Madar1,2, Aniko Timar1, Zsuzsanna Dalya1, and Nikolett Biro1,2
Gergely Koban et al.
  • 1Wigner Research Centre for Physics, Department of Space Physics and Space Technology, Budapest, Hungary
  • 2Eötvös Loránd University, Doctoral School of Physics, Budapest, Hungary

Co-rotating Interaction Regions are complex and fascianting structures in the Heliosphere that 
play an important role in space weather. They arise from the fast solar wind interacting with the 
slow solar wind streams. The interface between fast and slow solar wind is called the stream 
interface, and it is common for CIRs to produce forward shock at the leading edge and reverse 
shock at the trailing edge. CIRs often have considerable tilts in the north-south axis, owing to the magnetic 
conditions on the Sun.


Examination of the spatial structure of CIRs, – most importantly the aforementioned tilt – is not 
an easy task. We attempt a multi-spacecraft investigation in order to examine the spatial 
structure of CIRs on different distance scales. Using all available spacecraft data nearby, the tilt 
of the stream interface can be determined considering the time delays of the effects caused by 
the CIR recorded by each spacecraft. Our final aim is to improve solar wind propagation 
methods with these detailed CIR results.

How to cite: Koban, G., Opitz, A., Nemeth, Z., Facsko, G., Madar, A., Timar, A., Dalya, Z., and Biro, N.: Spatial Structure of CIRs, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-4121, https://doi.org/10.5194/egusphere-egu22-4121, 2022.

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