Parker Solar Probe observations of helical structures as boundaries for energetic particles

F. Pecora; S. Servidio; A. Greco; W. H. Matthaeus; D. J. McComas; J. Giacalone; C. J. Joyce; T. Getachew; C. M.S. Cohen; R. A. Leske; M. E. Wiedenbeck; R. L. McNutt; M. E. Hill; D. G. Mitchell; E. R. Christian; E. C. Roelof; N. A. Schwadron; S. D. Bale

doi:10.1093/mnras/stab2659

Parker Solar Probe observations of helical structures as boundaries for energetic particles

F. Pecora, S. Servidio, A. Greco, W. H. Matthaeus, D. J. McComas, J. Giacalone, C. J. Joyce, T. Getachew, C. M.S. Cohen, R. A. Leske, M. E. Wiedenbeck, R. L. McNutt, M. E. Hill, D. G. Mitchell, E. R. Christian, E. C. Roelof, N. A. Schwadron, S. D. Bale

Astrophysical Sciences

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14 Scopus citations

Abstract

Energetic particle transport in the interplanetary medium is known to be affected by magnetic structures. It has been demonstrated for solar energetic particles in near-Earth orbit studies, and also for the more energetic cosmic rays. In this paper, we show observational evidence that intensity variations of solar energetic particles can be correlated with the occurrence of helical magnetic flux tubes and their boundaries. The analysis is carried out using data from Parker Solar Probe orbit 5, in the period 2020 May 24 to June 2. We use FIELDS magnetic field data and energetic particle measurements from the Integrated Science Investigation of the Sun (IS⊙IS) suite on the Parker Solar Probe. We identify magnetic flux ropes by employing a real-space evaluation of magnetic helicity, and their potential boundaries using the Partial Variance of Increments method. We find that energetic particles are either confined within or localized outside of helical flux tubes, suggesting that the latter act as transport boundaries for particles, consistent with previously developed viewpoints.

Original language	English (US)
Pages (from-to)	2114-2122
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	508
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stab2659
State	Published - Dec 1 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Sun: magnetic fields
Sun: particle emission
magnetic fields
plasmas
solar wind

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10.1093/mnras/stab2659

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Pecora, F., Servidio, S., Greco, A., Matthaeus, W. H., McComas, D. J., Giacalone, J., Joyce, C. J., Getachew, T., Cohen, C. M. S., Leske, R. A., Wiedenbeck, M. E., McNutt, R. L., Hill, M. E., Mitchell, D. G., Christian, E. R., Roelof, E. C., Schwadron, N. A., & Bale, S. D. (2021). Parker Solar Probe observations of helical structures as boundaries for energetic particles. Monthly Notices of the Royal Astronomical Society, 508(2), 2114-2122. https://doi.org/10.1093/mnras/stab2659

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title = "Parker Solar Probe observations of helical structures as boundaries for energetic particles",

abstract = "Energetic particle transport in the interplanetary medium is known to be affected by magnetic structures. It has been demonstrated for solar energetic particles in near-Earth orbit studies, and also for the more energetic cosmic rays. In this paper, we show observational evidence that intensity variations of solar energetic particles can be correlated with the occurrence of helical magnetic flux tubes and their boundaries. The analysis is carried out using data from Parker Solar Probe orbit 5, in the period 2020 May 24 to June 2. We use FIELDS magnetic field data and energetic particle measurements from the Integrated Science Investigation of the Sun (IS⊙IS) suite on the Parker Solar Probe. We identify magnetic flux ropes by employing a real-space evaluation of magnetic helicity, and their potential boundaries using the Partial Variance of Increments method. We find that energetic particles are either confined within or localized outside of helical flux tubes, suggesting that the latter act as transport boundaries for particles, consistent with previously developed viewpoints.",

keywords = "Sun: magnetic fields, Sun: particle emission, magnetic fields, plasmas, solar wind",

author = "F. Pecora and S. Servidio and A. Greco and Matthaeus, {W. H.} and McComas, {D. J.} and J. Giacalone and Joyce, {C. J.} and T. Getachew and Cohen, {C. M.S.} and Leske, {R. A.} and Wiedenbeck, {M. E.} and McNutt, {R. L.} and Hill, {M. E.} and Mitchell, {D. G.} and Christian, {E. R.} and Roelof, {E. C.} and Schwadron, {N. A.} and Bale, {S. D.}",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2021",

month = dec,

day = "1",

doi = "10.1093/mnras/stab2659",

language = "English (US)",

volume = "508",

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Pecora, F, Servidio, S, Greco, A, Matthaeus, WH, McComas, DJ, Giacalone, J, Joyce, CJ, Getachew, T, Cohen, CMS, Leske, RA, Wiedenbeck, ME, McNutt, RL, Hill, ME, Mitchell, DG, Christian, ER, Roelof, EC, Schwadron, NA & Bale, SD 2021, 'Parker Solar Probe observations of helical structures as boundaries for energetic particles', Monthly Notices of the Royal Astronomical Society, vol. 508, no. 2, pp. 2114-2122. https://doi.org/10.1093/mnras/stab2659

TY - JOUR

T1 - Parker Solar Probe observations of helical structures as boundaries for energetic particles

AU - Pecora, F.

AU - Servidio, S.

AU - Greco, A.

AU - Matthaeus, W. H.

AU - McComas, D. J.

AU - Giacalone, J.

AU - Joyce, C. J.

AU - Getachew, T.

AU - Cohen, C. M.S.

AU - Leske, R. A.

AU - Wiedenbeck, M. E.

AU - McNutt, R. L.

AU - Hill, M. E.

AU - Mitchell, D. G.

AU - Christian, E. R.

AU - Roelof, E. C.

AU - Schwadron, N. A.

AU - Bale, S. D.

PY - 2021/12/1

Y1 - 2021/12/1

N2 - Energetic particle transport in the interplanetary medium is known to be affected by magnetic structures. It has been demonstrated for solar energetic particles in near-Earth orbit studies, and also for the more energetic cosmic rays. In this paper, we show observational evidence that intensity variations of solar energetic particles can be correlated with the occurrence of helical magnetic flux tubes and their boundaries. The analysis is carried out using data from Parker Solar Probe orbit 5, in the period 2020 May 24 to June 2. We use FIELDS magnetic field data and energetic particle measurements from the Integrated Science Investigation of the Sun (IS⊙IS) suite on the Parker Solar Probe. We identify magnetic flux ropes by employing a real-space evaluation of magnetic helicity, and their potential boundaries using the Partial Variance of Increments method. We find that energetic particles are either confined within or localized outside of helical flux tubes, suggesting that the latter act as transport boundaries for particles, consistent with previously developed viewpoints.

AB - Energetic particle transport in the interplanetary medium is known to be affected by magnetic structures. It has been demonstrated for solar energetic particles in near-Earth orbit studies, and also for the more energetic cosmic rays. In this paper, we show observational evidence that intensity variations of solar energetic particles can be correlated with the occurrence of helical magnetic flux tubes and their boundaries. The analysis is carried out using data from Parker Solar Probe orbit 5, in the period 2020 May 24 to June 2. We use FIELDS magnetic field data and energetic particle measurements from the Integrated Science Investigation of the Sun (IS⊙IS) suite on the Parker Solar Probe. We identify magnetic flux ropes by employing a real-space evaluation of magnetic helicity, and their potential boundaries using the Partial Variance of Increments method. We find that energetic particles are either confined within or localized outside of helical flux tubes, suggesting that the latter act as transport boundaries for particles, consistent with previously developed viewpoints.

KW - Sun: magnetic fields

KW - Sun: particle emission

KW - magnetic fields

KW - plasmas

KW - solar wind

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U2 - 10.1093/mnras/stab2659

DO - 10.1093/mnras/stab2659

M3 - Article

AN - SCOPUS:85119068798

SN - 0035-8711

VL - 508

SP - 2114

EP - 2122

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Parker Solar Probe observations of helical structures as boundaries for energetic particles

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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