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Quasi-periodic ripples in the heliosphere at 1 AU and beyond

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Quasi-periodic ripples in the heliosphere at 1 AU and beyond. / Birch, M.J.; Hargreaves, J.K.
In: Advances in Space Research, Vol. 67, No. 1, 01.01.2021, p. 678-699.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Birch, MJ & Hargreaves, JK 2021, 'Quasi-periodic ripples in the heliosphere at 1 AU and beyond', Advances in Space Research, vol. 67, no. 1, pp. 678-699. https://doi.org/10.1016/j.asr.2020.08.030

APA

Birch, M. J., & Hargreaves, J. K. (2021). Quasi-periodic ripples in the heliosphere at 1 AU and beyond. Advances in Space Research, 67(1), 678-699. https://doi.org/10.1016/j.asr.2020.08.030

Vancouver

Birch MJ, Hargreaves JK. Quasi-periodic ripples in the heliosphere at 1 AU and beyond. Advances in Space Research. 2021 Jan 1;67(1):678-699. Epub 2020 Sept 10. doi: 10.1016/j.asr.2020.08.030

Author

Birch, M.J. ; Hargreaves, J.K. / Quasi-periodic ripples in the heliosphere at 1 AU and beyond. In: Advances in Space Research. 2021 ; Vol. 67, No. 1. pp. 678-699.

Bibtex

@article{7933b4a0223a45fab2892c34bb860c45,
title = "Quasi-periodic ripples in the heliosphere at 1 AU and beyond",
abstract = "This study extends the investigation of the ripples in the solar wind and the interplanetary magnetic field at L1 reported by Birch and Hargreaves (2020) to cover heliospheric distances from 1 to 40 AU, using data from the Voyager 2, Ulysses, Juno, Cassini, Themis and Apollo-12 spacecraft. The ripples were extracted from the source data using a bandpass filter which reduces the noise component of the source data while removing long-term trends. The ripples were found to propagate throughout the heliosphere with an average periodicity of 26 min, without significant attenuation relative to the background. They also permeated within the magnetospheres of Earth, Jupiter and Saturn with an average periodicity of 25 min, though with some attenuation relative to the solar wind, especially in the case of Jupiter. Within the planetary magnetospheres, the ripples were suppressed by the intense fields in close proximity to each planet, and though the distance varied at which this cutoff occurred, the flux density was very similar in all three cases.",
keywords = "Geomagnetosphere, Interplanetary magnetic field, Jovian magnetosphere, Quasi-periodic ripples, Saturnian magnetosphere, Solar wind, Bandpass filters, Interplanetary flight, Magnetosphere, Close proximity, Flux densities, Intense field, Interplanetary magnetic fields, Long-term trend, Noise components, Planetary magnetosphere, Quasi-periodic, Interplanetary spacecraft",
author = "M.J. Birch and J.K. Hargreaves",
year = "2021",
month = jan,
day = "1",
doi = "10.1016/j.asr.2020.08.030",
language = "English",
volume = "67",
pages = "678--699",
journal = "Advances in Space Research",
issn = "0273-1177",
publisher = "Elsevier Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - Quasi-periodic ripples in the heliosphere at 1 AU and beyond

AU - Birch, M.J.

AU - Hargreaves, J.K.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - This study extends the investigation of the ripples in the solar wind and the interplanetary magnetic field at L1 reported by Birch and Hargreaves (2020) to cover heliospheric distances from 1 to 40 AU, using data from the Voyager 2, Ulysses, Juno, Cassini, Themis and Apollo-12 spacecraft. The ripples were extracted from the source data using a bandpass filter which reduces the noise component of the source data while removing long-term trends. The ripples were found to propagate throughout the heliosphere with an average periodicity of 26 min, without significant attenuation relative to the background. They also permeated within the magnetospheres of Earth, Jupiter and Saturn with an average periodicity of 25 min, though with some attenuation relative to the solar wind, especially in the case of Jupiter. Within the planetary magnetospheres, the ripples were suppressed by the intense fields in close proximity to each planet, and though the distance varied at which this cutoff occurred, the flux density was very similar in all three cases.

AB - This study extends the investigation of the ripples in the solar wind and the interplanetary magnetic field at L1 reported by Birch and Hargreaves (2020) to cover heliospheric distances from 1 to 40 AU, using data from the Voyager 2, Ulysses, Juno, Cassini, Themis and Apollo-12 spacecraft. The ripples were extracted from the source data using a bandpass filter which reduces the noise component of the source data while removing long-term trends. The ripples were found to propagate throughout the heliosphere with an average periodicity of 26 min, without significant attenuation relative to the background. They also permeated within the magnetospheres of Earth, Jupiter and Saturn with an average periodicity of 25 min, though with some attenuation relative to the solar wind, especially in the case of Jupiter. Within the planetary magnetospheres, the ripples were suppressed by the intense fields in close proximity to each planet, and though the distance varied at which this cutoff occurred, the flux density was very similar in all three cases.

KW - Geomagnetosphere

KW - Interplanetary magnetic field

KW - Jovian magnetosphere

KW - Quasi-periodic ripples

KW - Saturnian magnetosphere

KW - Solar wind

KW - Bandpass filters

KW - Interplanetary flight

KW - Magnetosphere

KW - Close proximity

KW - Flux densities

KW - Intense field

KW - Interplanetary magnetic fields

KW - Long-term trend

KW - Noise components

KW - Planetary magnetosphere

KW - Quasi-periodic

KW - Interplanetary spacecraft

U2 - 10.1016/j.asr.2020.08.030

DO - 10.1016/j.asr.2020.08.030

M3 - Journal article

VL - 67

SP - 678

EP - 699

JO - Advances in Space Research

JF - Advances in Space Research

SN - 0273-1177

IS - 1

ER -