Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

S. T. Alnussirat; R. Livi; D. E. Larson; A. Rahmati; P. L. Whittlesey; O. Romeo; S. T. Badman; Milo Buitrago-Casas; Juan Carlos Martínez Oliveros; M. Pulupa; S. D. Bale; J. Huang; J. Verniero; N. Raouafi; Donald Mitchell; D. J. McComas; Matt Hill; Christina Cohen

doi:10.3847/2041-8213/acf21c

Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

S. T. Alnussirat, R. Livi, D. E. Larson, A. Rahmati, P. L. Whittlesey, O. Romeo, S. T. Badman, Milo Buitrago-Casas, Juan Carlos Martínez Oliveros, M. Pulupa, S. D. Bale, J. Huang, J. Verniero, N. Raouafi, Donald Mitchell, D. J. McComas, Matt Hill, Christina Cohen

Astrophysical Sciences

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Abstract

During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.

Original language	English (US)
Article number	L32
Journal	Astrophysical Journal Letters
Volume	954
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/acf21c
State	Published - Sep 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Alnussirat, S. T., Livi, R., Larson, D. E., Rahmati, A., Whittlesey, P. L., Romeo, O., Badman, S. T., Buitrago-Casas, M., Martínez Oliveros, J. C., Pulupa, M., Bale, S. D., Huang, J., Verniero, J., Raouafi, N., Mitchell, D., McComas, D. J., Hill, M., & Cohen, C. (2023). Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission. Astrophysical Journal Letters, 954(1), Article L32. https://doi.org/10.3847/2041-8213/acf21c

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title = "Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission",

abstract = "During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event{\textquoteright}s nature, origin, and characteristics.",

author = "Alnussirat, {S. T.} and R. Livi and Larson, {D. E.} and A. Rahmati and Whittlesey, {P. L.} and O. Romeo and Badman, {S. T.} and Milo Buitrago-Casas and {Mart{\'i}nez Oliveros}, {Juan Carlos} and M. Pulupa and Bale, {S. D.} and J. Huang and J. Verniero and N. Raouafi and Donald Mitchell and McComas, {D. J.} and Matt Hill and Christina Cohen",

note = "Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2023",

month = sep,

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doi = "10.3847/2041-8213/acf21c",

language = "English (US)",

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Alnussirat, ST, Livi, R, Larson, DE, Rahmati, A, Whittlesey, PL, Romeo, O, Badman, ST, Buitrago-Casas, M, Martínez Oliveros, JC, Pulupa, M, Bale, SD, Huang, J, Verniero, J, Raouafi, N, Mitchell, D, McComas, DJ, Hill, M & Cohen, C 2023, 'Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission', Astrophysical Journal Letters, vol. 954, no. 1, L32. https://doi.org/10.3847/2041-8213/acf21c

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T1 - Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

AU - Alnussirat, S. T.

AU - Livi, R.

AU - Larson, D. E.

AU - Rahmati, A.

AU - Whittlesey, P. L.

AU - Romeo, O.

AU - Badman, S. T.

AU - Buitrago-Casas, Milo

AU - Martínez Oliveros, Juan Carlos

AU - Pulupa, M.

AU - Bale, S. D.

AU - Huang, J.

AU - Verniero, J.

AU - Raouafi, N.

AU - Mitchell, Donald

AU - McComas, D. J.

AU - Hill, Matt

AU - Cohen, Christina

PY - 2023/9/1

Y1 - 2023/9/1

N2 - During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.

AB - During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.

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Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

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