Continued PSP/WISPR Observations of a Phaethon-related Dust Trail

Battams, K.; Gutarra-Leon, Angel J.; Gallagher, Brendan; Knight, Matthew M.; Stenborg, G.; Tanner, Sarah; Linton, M. G.; Szalay, J. R.; Kelley, Michael S. P.; Howard, R. A.

doi:10.48550/arxiv.2207.12239

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“…This dust trail has been observed by WISPR in every orbit, first in WISPR-I and then in WISPR-O as the PSP orbits evolved. In a follow-up study, Battams et al (2022) find that the dust trail is not exactly along Phaethon's orbital path, the separation between them being a function of Phaethon's true anomaly. They point out, however, that a simple change of Phaethon's argument of periapsis by 1.0°gives a near-perfect by-eye fit to the portion of the trail observed in WISPR-O.…”

Section: Activity On 2021 November 22-23mentioning

confidence: 93%

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙

Howard

Stenborg

Vourlidas

et al. 2022

ApJ

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The closest perihelion pass of Parker Solar Probe (PSP), so far, occurred between 2021 November 16 and 26 and reached ∼13.29 R ☉ from Sun center. This pass resulted in very unique observations of the solar corona by the Wide-field Instrument for Solar PRobe (WISPR). WISPR observed at least 10 coronal mass ejections (CMEs), some of which were so close that the structures appear distorted. All of the CMEs appeared to have a magnetic flux rope (MFR) structure, and most were oriented such that the view was along the axis orientation, revealing very complex interiors. Two CMEs had a small MFR develop in the interior, with a bright circular boundary surrounding a very dark interior. Trailing the larger CMEs were substantial outflows of small blobs and flux-rope-like structures within striated ribbons, lasting for many hours. When the heliospheric plasma sheet was inclined, as it was during the days around perihelion on 2021 November 21, the outflow was over a very wide latitude range. One CME was overtaken by a faster one, with a resultant compression of the rear of the leading CME and an unusual expansion in the trailing CME. The small Thomson surface creates brightness variations of structures as they pass through the field of view. In addition to this dynamic activity, a brightness band from excess dust along the orbit of asteroid/comet 3200 Phaethon is also seen for several days.

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Section: Activity On 2021 November 22-23mentioning

confidence: 93%

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙

Howard

Stenborg

Vourlidas

et al. 2022

ApJ

Self Cite

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Continued PSP/WISPR Observations of a Phaethon-related Dust Trail

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Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙

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Continued PSP/WISPR Observations of a Phaethon-related Dust Trail

Cited by 1 publication

References 0 publications

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R ⊙

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R ⊙

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Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R _⊙