Diagnostics of corotating interaction regions with the kinetic properties of iron ions as determined with STEREO/PLASTIC

Bochsler, Peter; Lee, M. A.; Karrer, R.; Jian, L. K.; Ellis, L.; Farrugia, C. J.; Galvin, A. B.; Kistler, L. M.; Kucharek, H.; Möbius, E.; Popecki, M. A.; Simunac, K. D. C.; Blush, L. M.; Daoudi, H.; Wurz, P.; Klecker, B.; Wimmer-Schweingruber, R. F.; Thompson, B.; Luhmann, J. G.; Russell, C. T.; ... (2010). Diagnostics of corotating interaction regions with the kinetic properties of iron ions as determined with STEREO/PLASTIC. Annales geophysicae, 28(2), pp. 491-497. Copernicus Publications 10.5194/angeo-28-491-2010

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STEREO/PLASTIC determines three-dimensional distributions of solar wind iron ions with unprecedented time resolution. Typically 300 to 1000 counts are registered within each 5 min time interval. For the present study we use the information contained in these distributions to characterize CIRs (Corotating Interaction Regions) in two test cases. We perform a consistency test for both the derived physical parameters and for the analytical model of CIRs of Lee (2000). At 1 AU we find that apart from compositional changes the most indicative parameter for marking the time when a CIR passes a spacecraft is the angular deflection of the flow vector of particles. Changes in particle densities and the changes in magnitudes of speeds are apparently less reliable indicators of stream interfaces.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Other Institutions > Emeriti, Faculty of Science
08 Faculty of Science > Physics Institute

UniBE Contributor:

Bochsler, Peter and Wurz, Peter

Subjects:

500 Science > 520 Astronomy
600 Technology > 620 Engineering

ISSN:

1432-0576

Publisher:

Copernicus Publications

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

08 Jun 2021 16:08

Last Modified:

08 Jun 2021 16:08

Publisher DOI:

10.5194/angeo-28-491-2010

BORIS DOI:

10.48350/154638

URI:

https://boris.unibe.ch/id/eprint/154638

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