2021
DOI: 10.1029/2021ja029188
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Magnetic Field in Magnetosheath Jets: A Statistical Study of BZ Near the Magnetopause

Abstract: Magnetosheath jets travel from the bow shock toward the magnetopause, and some of them eventually impact it. Jet impacts have recently been linked to triggering magnetopause reconnection in case studies by Hietala et al. (2018, https://doi.org/10.1002/2017gl076525) and Nykyri et al. (2019, https://doi.org/10.1029/2018ja026357). In this study, we focus on the enhancing or suppressing effect jets could have on reconnection by locally altering the magnetic shear via their own magnetic fields. Using observations f… Show more

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Cited by 6 publications
(3 citation statements)
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“…(2021), and Vuorinen et al. (2021) , but our results show that their predictions should be applied with a special care in a highly disturbed magnetosheath. On the other hand, the fact that our events were observed under a nearly radial magnetic field in a combination with the aforementioned THEMIS orbital limitation probably led Merka et al.…”
Section: Discussionmentioning
confidence: 38%
“…(2021), and Vuorinen et al. (2021) , but our results show that their predictions should be applied with a special care in a highly disturbed magnetosheath. On the other hand, the fact that our events were observed under a nearly radial magnetic field in a combination with the aforementioned THEMIS orbital limitation probably led Merka et al.…”
Section: Discussionmentioning
confidence: 38%
“…Previous research shows that occurrence rates for foreshock transients are higher for higher solar wind speeds and lower solar wind densities (Chu et al., 2017; Facskó et al., 2009; Liu et al., 2017, 2021). The magnetosheath high‐speed jets are also typically found more frequently behind the quasi‐parallel bow shock during high‐speed and low dense solar wind plasma conditions (Koller et al., 2023; Raptis et al., 2020; Vuorinen et al., 2023) associated them with high‐speed streams. Our analysis provides a possible answer to this by indicating that IMF discontinuities with the normals needed to produce foreshock events, as well as magnetosheath jets, also occur for high solar wind speed and low solar wind density.…”
Section: Discussion and Summarymentioning
confidence: 99%
“…Previous studies suggest that the occurrence of magnetic reconnection is closely related to the southward (B z < 0) or northward (B z > 0) IMF, which drives the magnetosphere dynamic process (Vuorinen et al 2021) and plays a role in generating whistler-mode waves (Miyoshi et al 2013). However, the IMF B z orientation, magnetic reconnection, and whistler-mode wave are interconnected.…”
Section: Occurrence and Characteristics Of Whistler-mode Waves Affect...mentioning
confidence: 99%