Possible causes of the discrepancy between the predicted and observed parameters of high-speed solar wind streams

We have considered the possible causes of discrepancies between the predicted and observed at 1 AU parameters of the recurrent solar wind (SW) streams in the maximum of the 24th solar cycle. These discrepancies have been observed in both the SW velocity profile and the SW stream arrival time, as wel...

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Bibliographic Details
Published in:Cosmic research 2017, Vol.55 (1), p.20-29
Main Authors: Shugay, Yu. S., Veselovsky, I. S., Slemzin, V. A., Yermolaev, Yu. I., Rodkin, D. G.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Astrophysics and Cosmology
Corona
High speed
Magnetic fields
Mathematical models
Parameters
Physics
Physics and Astronomy
Predictions
Solar corona
Solar cycle
Solar wind
Solar wind velocity
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Streams
Velocity distribution
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Summary:We have considered the possible causes of discrepancies between the predicted and observed at 1 AU parameters of the recurrent solar wind (SW) streams in the maximum of the 24th solar cycle. These discrepancies have been observed in both the SW velocity profile and the SW stream arrival time, as well as in the absence of the expected high-speed SW stream. The degree of discrepancy depends on the model used for the SW prediction; however, in some cases, different prediction methods provide a similar discrepancy with the observed SW parameters at 1 AU. For several cases, we show that the probable cause of the discrepancies can be a deflection of the high-speed SW stream from the radial direction due to the interaction with the transient SW streams at certain configuration of the magnetic fields of high-speed and transient SW sources in the solar corona.
ISSN:0010-9525
1608-3075
DOI:10.1134/S0010952517010087