Publication:
Enhanced Energy Transfer Rate in Solar Wind Turbulence Observed near the Sun from Parker Solar Probe

Issued Date

2020-02-01

Resource Type

Article

ISSN

00670049

DOI

10.3847/1538-4365/ab5dae

Other identifier(s)

2-s2.0-85087356695

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Astrophysical Journal, Supplement Series. Vol.246, No.2 (2020)

Suggested Citation

Riddhi Bandyopadhyay, M. L. Goldstein, B. A. Maruca, W. H. Matthaeus, T. N. Parashar, D. Ruffolo, R. Chhiber, A. Usmanov, A. Chasapis, R. Qudsi, Stuart D. Bale, J. W. Bonnell, Thierry Dudok De Wit, Keith Goetz, Peter R. Harvey, Robert J. MacDowall, David M. Malaspina, Marc Pulupa, J. C. Kasper, K. E. Korreck, A. W. Case, M. Stevens, P. Whittlesey, D. Larson, R. Livi, K. G. Klein, M. Velli, N. Raouafi Enhanced Energy Transfer Rate in Solar Wind Turbulence Observed near the Sun from Parker Solar Probe. Astrophysical Journal, Supplement Series. Vol.246, No.2 (2020). doi:10.3847/1538-4365/ab5dae Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/57866

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Title

Enhanced Energy Transfer Rate in Solar Wind Turbulence Observed near the Sun from Parker Solar Probe

Author(s)

Riddhi Bandyopadhyay
 M. L. Goldstein
 B. A. Maruca
 W. H. Matthaeus
 T. N. Parashar
 D. Ruffolo
 R. Chhiber
 A. Usmanov
 A. Chasapis
 R. Qudsi
 Stuart D. Bale
 J. W. Bonnell
 Thierry Dudok De Wit
 Keith Goetz
 Peter R. Harvey
 Robert J. MacDowall
 David M. Malaspina
 Marc Pulupa
 J. C. Kasper
 K. E. Korreck
 A. W. Case
 M. Stevens
 P. Whittlesey
 D. Larson
 R. Livi
 K. G. Klein
 M. Velli
 N. Raouafi

Other Contributor(s)

Universite d'Orleans
 University of Minnesota Twin Cities
 Space Sciences Laboratory at UC Berkeley
 University of California, Los Angeles
 University of Michigan, Ann Arbor
 University of California, Berkeley
 University of Maryland, Baltimore County
 Queen Mary, University of London
 Johns Hopkins University Applied Physics Laboratory
 Imperial College London
 Mahidol University
 The University of Arizona
 Smithsonian Astrophysical Observatory
 NASA Goddard Space Flight Center
 The Bartol Research Institute
 University of Colorado Boulder

Abstract

© 2020. The American Astronomical Society. All rights reserved.. Direct evidence of an inertial-range turbulent energy cascade has been provided by spacecraft observations in heliospheric plasmas. In the solar wind, the average value of the derived heating rate near 1 au is ∼103 Jkg-1s-1, an amount sufficient to account for observed departures from adiabatic expansion. Parker Solar Probe, even during its first solar encounter, offers the first opportunity to compute, in a similar fashion, a fluid-scale energy decay rate, much closer to the solar corona than any prior in situ observations. Using the Politano-Pouquet third-order law and the von Kármán decay law, we estimate the fluid-range energy transfer rate in the inner heliosphere, at heliocentric distance R ranging from 54 R o˙ (0.25 au) to 36 R o˙ (0.17 au). The energy transfer rate obtained near the first perihelion is about 100 times higher than the average value at 1 au, which is in agreement with estimates based on a heliospheric turbulence transport model. This dramatic increase in the heating rate is unprecedented in previous solar wind observations, including those from Helios, and the values are close to those obtained in the shocked plasma inside the terrestrial magnetosheath.

Keyword(s)

Earth and Planetary Sciences
 Physics and Astronomy

Availability

URI

https://repository.li.mahidol.ac.th/handle/20.500.14594/57866

Collections

Scopus 2020