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Related papers: Cross Helicity Reversals In Magnetic Switchbacks

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Parker Solar Probe (PSP) observations during its first encounter at 35.7 $R_\odot$ have shown the presence of magnetic field lines which are strongly perturbed to the point that they produce local inversions of the radial magnetic field,…

The subject of switchbacks, defined either as large angular deflections or polarity reversals of the magnetic field, has generated substantial interest in the space physics community since the launch of Parker Solar Probe (PSP) in 2018.…

Magnetic switchbacks are rapid high amplitude reversals of the radial magnetic field in the solar wind that do not involve a heliospheric current sheet crossing. First seen sporadically in the seventies in Mariner and Helios data,…

Solar and Stellar Astrophysics · Physics 2023-01-09 Gabor Toth , Marco Velli , Bart van der Holst

Switchbacks are Aflv\'enic fluctuations in the solar wind, which exhibit large rotations in the magnetic field direction. Observations from Parker Solar Probe's (PSP's) first two solar encounters have formed the basis for many of the…

Space Physics · Physics 2022-09-14 R. Laker , T. S. Horbury , L. Matteini , S. D. Bale , J. E. Stawarz , L. D. Woodham , T. Woolley

Magnetic clouds are large-scale transient structures in the solar wind with low plasma $\beta$, low-amplitude magnetic field fluctuations, and twisted field lines with both ends often connected to the Sun. Their inertial-range turbulent…

Space Physics · Physics 2022-05-23 S. W. Good , E. K. J. Kilpua , M. Ala-Lahti , A. Osmane , S. D. Bale , L. -L. Zhao

Parker Solar Probe (PSP) has shown that the solar wind in the inner heliosphere is characterized by the quasi omni-presence of magnetic switchbacks ("switchback" hereinafter), local backward-bends of magnetic field lines. Switchbacks also…

The S-shaped magnetic structure in the solar wind formed by the twisting of magnetic field lines is called a switchback, whose main characteristics are the reversal of the magnetic field and the significant increase in the solar wind radial…

Solar and Stellar Astrophysics · Physics 2022-01-21 Mingming Meng , Ying D. Liu , Chong Chen , Rui Wang

We analyze magnetic field data from the first six encounters of PSP, three Helios fast streams and two Ulysses south polar passes covering heliocentric distances $0.1\lesssim R\lesssim 3$ au. We use this data set to statistically determine…

Solar and Stellar Astrophysics · Physics 2021-10-13 Anna Tenerani , Nikos Sioulas , Lorenzo Matteini , Olga Panasenco , Chen Shi , Marco Velli

The solar wind shows periods of highly Alfv\'enic activity, where velocity fluctuations and magnetic fluctuations are aligned or anti-aligned with each other. It is generally agreed that solar wind plasma velocity and magnetic field…

Parker Solar Probe (PSP) data recorded within a heliocentric radial distance of 0.3 AU have revealed a magnetic field dominated by Alfv\'enic structures that undergo large local variations or even reversals of the radial magnetic field.…

Switchbacks are rapid magnetic field reversals that last from seconds to hours. Current Parker Solar Probe (PSP) observations pose many open questions in regard to the nature of switchbacks. For example, are they stable as they propagate…

Parker Solar Probe's first encounters with the Sun revealed the presence of ubiquitous localised magnetic deflections in the inner heliosphere; these structures, often called switchbacks, are particularly striking in solar wind streams…

Switchbacks -- abrupt reversals of the magnetic field within the solar wind -- have been ubiquitously observed by Parker Solar Probe (PSP). Their origin, whether from processes near the solar surface or within the solar wind itself, remains…

Solar and Stellar Astrophysics · Physics 2022-12-14 Zade Johnston , Jonathan Squire , Alfred Mallet , Romain Meyrand

Using data from orbits one to eleven of the Parker Solar Probe (PSP) mission, the magnetic field spectral index was measured across a range of heliocentric distances. The previously observed transition between a value of $-5/3$ far from the…

Solar and Stellar Astrophysics · Physics 2023-07-11 J. R. McIntyre , C. H. K. Chen , A. Larosa

Plasma velocity and magnetic field measurements from the Voyager 2 mission are used to study solar wind turbulence in the slow solar wind at two different heliocentric distances, 5 and 29 astronomical units, sufficiently far apart to…

Solar and Stellar Astrophysics · Physics 2016-01-20 M. Iovieno , L. Gallana , F. Fraternale , J. D. Richardson , M. Opher , D. Tordella

Magnetic switchbacks are distinct magnetic structures characterized by their abrupt reversal in the radial component of the magnetic field within the pristine solar wind. Switchbacks are believed to lose magnetic energy with heliocentric…

Magnetic switchbacks are localised polarity reversals in the radial component of the heliospheric magnetic field. Observations from Parker Solar Probe (PSP) have shown that they are a prevalent feature of the near-Sun solar wind. However,…

Space Physics · Physics 2023-07-19 G. H. H. Suen , C. J. Owen , D. Verscharen , T. S. Horbury , P. Louarn , R. De Marco

We investigate the orientation of the magnetic field deflections in switchbacks (SB) to determine if they are characterised by a possible preferential orientation. We compute the deflection angles of the magnetic field relative to the…

Solar and Stellar Astrophysics · Physics 2022-07-20 Naïs Fargette , Benoit Lavraud , Alexis P. Rouillard , Victor Réville , Stuart D. Bale , Justin Kasper

Switchbacks are widely acknowledged phenomena observed by the Parker Solar Probe and appear to occur in patches. Previous studies focused on the fluctuations at the magnetic reversals. However, the nature of the fluctuations inside the…

Solar and Stellar Astrophysics · Physics 2021-04-27 Honghong Wu , Chuanyi Tu , Xin Wang , Liping Yang

The Parker Solar Probe (PSP) mission presents a unique opportunity to study the near-Sun solar wind closer than any previous spacecraft. During its fourth and fifth solar encounters, PSP had the same orbital trajectory, meaning that solar…

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