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Title: Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters
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.
Authors:
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Award ID(s):
1655280
Publication Date:
NSF-PAR ID:
10300890
Journal Name:
Astronomy & Astrophysics
Volume:
650
Page Range or eLocation-ID:
A12
ISSN:
0004-6361
Sponsoring Org:
National Science Foundation
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