Articolo in rivista, 2021, ENG, 10.3847/2041-8213/ac36d1
Hernández, Carlos S.; Sorriso-Valvo, Luca; Bandyopadhyay, Riddhi; Chasapis, Alexandros; Vásconez, Christian L.; Marino, Raffaele; Pezzi, Oreste
Departamento de Física, Escuela Politécnica Nacional, Quito, Ecuador; Swedish Institute for Space Physics, Angström Laboratory, Uppsala, Sweden; Istituto per la Scienza e Tecnologia Dei Plasmi (ISTP), Consiglio Nazionale Delle Ricerche, Sede di Bari, Italy; Department of Astrophysical Sciences, Princeton University, NJ USA; Laboratory of Atmospheric and Space Physics, University of Colorado, Boulder, CO USA; Laboratoire de Mécanique des Fluides et d'Acoustique, CNRS, Ecole Centrale de Lyon, Université Claude Bernard Lyon, Ecully, France.
Recent Parker Solar Probe (PSP) observations of inner heliospheric plasma have shown an abundant presence of Alfvénic polarity reversal of the magnetic field, known as "switchbacks."While their origin is still debated, their role in driving the solar wind turbulence has been suggested through analysis of the spectral properties of magnetic fluctuations. Here, we provide a complementary assessment of their role in the turbulent cascade. The validation of the third-order linear scaling of velocity and magnetic fluctuations in intervals characterized by a high occurrence of switchbacks suggests that, irrespective of their local or remote origin, these structures are actively embedded in the turbulent cascade, at least at the radial distances sampled by PSP during its first perihelion. The stronger positive energy transfer rate observed in periods with a predominance of switchbacks indicates that they act as a mechanism injecting additional energy in the turbulence cascade.
The astrophysical journal. Letters (Print) 922 (1), pp. 1–8
Interplanetary turbulence, Solar wind, Magnetohydrodynamics, Interplanetary magnetic fields
Pezzi Oreste, Sorriso Valvo Luca
ID: 460802
Year: 2021
Type: Articolo in rivista
Creation: 2021-12-14 12:50:31.000
Last update: 2022-02-11 10:44:47.000
CNR authors
External links
OAI-PMH: Dublin Core
OAI-PMH: Mods
OAI-PMH: RDF
URL: https://iopscience.iop.org/article/10.3847/2041-8213/ac36d1/meta
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:460802
DOI: 10.3847/2041-8213/ac36d1
Scopus: 2-s2.0-85120648966
ISI Web of Science (WOS): 000720102400001