Near-Sun In Situ and Remote-sensing Observations of a Coronal Mass Ejection and its Effect on the Heliospheric Current Sheet

O. M. Romeo; C. R. Braga; S. T. Badman; D. E. Larson; M. L. Stevens; J. Huang; T. Phan; A. Rahmati; R. Livi; S. T. Alnussirat; P. L. Whittlesey; A. Szabo; K. G. Klein; T. Niembro-Hernandez; K. Paulson; J. L. Verniero; D. Lario; N. E. Raouafi; T. Ervin; J. Kasper; M. Pulupa; S. D. Bale; M. G. Linton

doi:10.3847/1538-4357/ace62e

The Astrophysical Journal (Jan 2023)

Near-Sun In Situ and Remote-sensing Observations of a Coronal Mass Ejection and its Effect on the Heliospheric Current Sheet

O. M. Romeo,
C. R. Braga,
S. T. Badman,
D. E. Larson,
M. L. Stevens,
J. Huang,
T. Phan,
A. Rahmati,
R. Livi,
S. T. Alnussirat,
P. L. Whittlesey,
A. Szabo,
K. G. Klein,
T. Niembro-Hernandez,
K. Paulson,
J. L. Verniero,
D. Lario,
N. E. Raouafi,
T. Ervin,
J. Kasper,
M. Pulupa,
S. D. Bale,
M. G. Linton

Affiliations

O. M. Romeo: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA; Department of Earth and Planetary Science, University of California , Berkeley, CA 94720, USA
C. R. Braga: ORCiD; George Mason University , Fairfax, VA 22030, USA
S. T. Badman: ORCiD; Center for Astrophysics ∣ Harvard & Smithsonian , Cambridge, MA 02138, USA
D. E. Larson: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
M. L. Stevens: ORCiD; Center for Astrophysics ∣ Harvard & Smithsonian , Cambridge, MA 02138, USA
J. Huang: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
T. Phan: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
A. Rahmati: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
R. Livi: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
S. T. Alnussirat: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
P. L. Whittlesey: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
A. Szabo: ORCiD; NASA Goddard Space Flight Center , Greenbelt, MD, 20771, USA
K. G. Klein: ORCiD; Lunar and Planetary Laboratory, University of Arizona , Tucson, AZ 85721, USA
T. Niembro-Hernandez: ORCiD; Center for Astrophysics ∣ Harvard & Smithsonian , Cambridge, MA 02138, USA
K. Paulson: ORCiD; Center for Astrophysics ∣ Harvard & Smithsonian , Cambridge, MA 02138, USA
J. L. Verniero: ORCiD; NASA Goddard Space Flight Center , Greenbelt, MD, 20771, USA
D. Lario: ORCiD; NASA Goddard Space Flight Center , Greenbelt, MD, 20771, USA
N. E. Raouafi: ORCiD; Johns Hopkins University Applied Physics Laboratory , Laurel, MD 20723, USA
T. Ervin: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA; Physics Department, University of California , Berkeley, CA 94720-7300, USA
J. Kasper: ORCiD; University of Michigan , Ann Arbor, MI 48109, USA
M. Pulupa: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA
S. D. Bale: ORCiD; Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA; Physics Department, University of California , Berkeley, CA 94720-7300, USA
M. G. Linton: ORCiD; Space Science Division, U.S. Naval Research Laboratory , Washington, DC 20375, USA

DOI: https://doi.org/10.3847/1538-4357/ace62e
Journal volume & issue: Vol. 954, no. 2
p. 168

Abstract

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During the thirteenth encounter of the Parker Solar Probe (PSP) mission, the spacecraft traveled through a topologically complex interplanetary coronal mass ejection (ICME) beginning on 2022 September 5. PSP traversed through the flank and wake of the ICME while observing the event for nearly two days. The Solar Probe ANalyzer and FIELDS instruments collected in situ measurements of the plasma particles and magnetic field at ∼13.3 R _S from the Sun. We observe classical ICME signatures, such as a fast-forward shock, bidirectional electrons, low proton temperatures, low plasma β , and high alpha particle to proton number density ratios. In addition, PSP traveled through two magnetic inversion lines, a magnetic reconnection exhaust, and multiple sub-Alfvénic regions. We compare these in situ measurements to remote-sensing observations from the Wide-field Imager for Solar PRobe Plus instrument on board PSP and the Sun Earth Connection Coronal and Heliospheric Investigation on the Solar Terrestrial Relations Observatory. Based on white-light coronagraphs, two CMEs are forward modeled to best fit the extent of the event. Furthermore, Air Force Data Assimilative Flux Transport magnetograms modeled from Global Oscillation Network Group magnetograms and Potential Field Source Surface modeling portray a global reconfiguration of the heliospheric current sheet (HCS) after the CME event, suggesting that these eruptions play a significant role in the evolution of the HCS.

Published in The Astrophysical Journal

ISSN: 1538-4357 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0004-637X

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