Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters

Zhao, L.-L.; Zank, G.P.; Hu, Q.; Telloni, D.; Chen, Y.; Adhikari, L.; Nakanotani, M.; Kasper, J.C.; Huang, J.; Bale, S.D.; Korreck, K.E.; Case, A.W.; Stevens, M.; Bonnell, J.W.; Dudok De Wit, T.; Goetz, K.; Harvey, P.R.; MacDowall, R.J.; Malaspina, D.M.; Pulupa, M.; Larson, D.E.; Livi, R.; Whittlesey, P.; Klein, K.G.; Raouafi, N.E.

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Affiliation

Lunar and Planetary Laboratory, University of Arizona
Department of Planetary Sciences, University of Arizona

Issue Date

2021

Citation

Zhao, L.-L., Zank, G. P., Hu, Q., Telloni, D., Chen, Y., Adhikari, L., Nakanotani, M., Kasper, J. C., Huang, J., Bale, S. D., Korreck, K. E., Case, A. W., Stevens, M., Bonnell, J. W., Dudok De Wit, T., Goetz, K., Harvey, P. R., MacDowall, R. J., Malaspina, D. M., … Raouafi, N. E. (2021). Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters. Astronomy and Astrophysics, 650.

Journal

Astronomy and Astrophysics

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This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.

Abstract

Context. Aims. We systematically search for magnetic flux rope structures in the solar wind to within the closest distance to the Sun of ~0.13 AU, using data from the third and fourth orbits of the Parker Solar Probe. Methods. We extended our previous magnetic helicity-based technique of identifying magnetic flux rope structures. The method was improved upon to incorporate the azimuthal flow, which becomes larger as the spacecraft approaches the Sun. Results. A total of 21 and 34 magnetic flux ropes are identified during the third (21-day period) and fourth (17-day period) orbits of the Parker Solar Probe, respectively. We provide a statistical analysis of the identified structures, including their relation to the streamer belt and heliospheric current sheet crossing. © ESO 2021.

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Immediate access

ISSN

0004-6361

DOI

10.1051/0004-6361/202039298

Version

Final published version

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UA Faculty Publications