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From Foreshock 30-Second Waves to Magnetospheric Pc3 Waves.

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Title: From Foreshock 30-Second Waves to Magnetospheric Pc3 Waves.
Authors: Turc, Lucile1 (AUTHOR) lucile.turc@helsinki.fi, Takahashi, Kazue2 (AUTHOR) kazue.takahashi@jhuapl.edu, Kajdič, Primož3 (AUTHOR) primoz@igeofisica.unam.mx, Kilpua, Emilia K. J.1 (AUTHOR) emilia.kilpua@helsinki.fi, Sarris, Theodoros4 (AUTHOR) tsarris@ee.duth.gr, Palmroth, Minna1,5 (AUTHOR) minna.palmroth@helsinki.fi, Soucek, Jan6 (AUTHOR) soucek@ufa.cas.cz, Pfau-Kempf, Yann1 (AUTHOR) yann.kempf@helsinki.fi, Dimmock, Andrew7 (AUTHOR) andrew.dimmock@irfu.se, Takahashi, Naoko8 (AUTHOR) n.takahashi@nict.go.jp
Source: Space Science Reviews. Mar2025, Vol. 221 Issue 2, p1-81. 81p.
Subjects: Magnetospheric physics, Electromagnetic waves, Theory of wave motion, Space environment, Scientific observation, Plasma waves
Abstract: Ultra-low frequency waves, with periods between 1-1000 s, are ubiquitous in the near-Earth plasma environment and play an important role in magnetospheric dynamics and in the transfer of electromagnetic energy from the solar wind to the magnetosphere. A class of those waves, often referred to as Pc3 waves when they are recorded from the ground, with periods between 10 and 45 s, are routinely observed in the dayside magnetosphere. They originate from the ion foreshock, a region of geospace extending upstream of the quasi-parallel portion of Earth's bow shock. There, the interaction between shock-reflected ions and the incoming solar wind gives rise to a variety of waves, and predominantly fast-magnetosonic waves with a period typically around 30 s. The connection between these waves upstream of the shock and their counterparts observed inside the magnetosphere and on the ground was inferred already early on in space observations due to similar properties, thereby implying the transmission of the waves across near-Earth space, through the shock and the magnetopause. This review provides an overview of foreshock 30-second/Pc3 waves research from the early observations in the 1960s to the present day, covering the entire propagation pathway of these waves, from the foreshock to the ground. We describe the processes at play in the different regions of geospace, and review observational, theoretical and numerical works pertaining to the study of these waves. We conclude this review with unresolved questions and upcoming opportunities in both observations and simulations to further our understanding of these waves. [ABSTRACT FROM AUTHOR]
Copyright of Space Science Reviews is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: From Foreshock 30-Second Waves to Magnetospheric Pc3 Waves.
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  Data: <searchLink fieldCode="AR" term="%22Turc%2C+Lucile%22">Turc, Lucile</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lucile.turc@helsinki.fi</i><br /><searchLink fieldCode="AR" term="%22Takahashi%2C+Kazue%22">Takahashi, Kazue</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> kazue.takahashi@jhuapl.edu</i><br /><searchLink fieldCode="AR" term="%22Kajdič%2C+Primož%22">Kajdič, Primož</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> primoz@igeofisica.unam.mx</i><br /><searchLink fieldCode="AR" term="%22Kilpua%2C+Emilia+K%2E+J%2E%22">Kilpua, Emilia K. J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> emilia.kilpua@helsinki.fi</i><br /><searchLink fieldCode="AR" term="%22Sarris%2C+Theodoros%22">Sarris, Theodoros</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> tsarris@ee.duth.gr</i><br /><searchLink fieldCode="AR" term="%22Palmroth%2C+Minna%22">Palmroth, Minna</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> minna.palmroth@helsinki.fi</i><br /><searchLink fieldCode="AR" term="%22Soucek%2C+Jan%22">Soucek, Jan</searchLink><relatesTo>6</relatesTo> (AUTHOR)<i> soucek@ufa.cas.cz</i><br /><searchLink fieldCode="AR" term="%22Pfau-Kempf%2C+Yann%22">Pfau-Kempf, Yann</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yann.kempf@helsinki.fi</i><br /><searchLink fieldCode="AR" term="%22Dimmock%2C+Andrew%22">Dimmock, Andrew</searchLink><relatesTo>7</relatesTo> (AUTHOR)<i> andrew.dimmock@irfu.se</i><br /><searchLink fieldCode="AR" term="%22Takahashi%2C+Naoko%22">Takahashi, Naoko</searchLink><relatesTo>8</relatesTo> (AUTHOR)<i> n.takahashi@nict.go.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Space+Science+Reviews%22">Space Science Reviews</searchLink>. Mar2025, Vol. 221 Issue 2, p1-81. 81p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetospheric+physics%22">Magnetospheric physics</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Theory+of+wave+motion%22">Theory of wave motion</searchLink><br /><searchLink fieldCode="DE" term="%22Space+environment%22">Space environment</searchLink><br /><searchLink fieldCode="DE" term="%22Scientific+observation%22">Scientific observation</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+waves%22">Plasma waves</searchLink>
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  Data: Ultra-low frequency waves, with periods between 1-1000 s, are ubiquitous in the near-Earth plasma environment and play an important role in magnetospheric dynamics and in the transfer of electromagnetic energy from the solar wind to the magnetosphere. A class of those waves, often referred to as Pc3 waves when they are recorded from the ground, with periods between 10 and 45 s, are routinely observed in the dayside magnetosphere. They originate from the ion foreshock, a region of geospace extending upstream of the quasi-parallel portion of Earth's bow shock. There, the interaction between shock-reflected ions and the incoming solar wind gives rise to a variety of waves, and predominantly fast-magnetosonic waves with a period typically around 30 s. The connection between these waves upstream of the shock and their counterparts observed inside the magnetosphere and on the ground was inferred already early on in space observations due to similar properties, thereby implying the transmission of the waves across near-Earth space, through the shock and the magnetopause. This review provides an overview of foreshock 30-second/Pc3 waves research from the early observations in the 1960s to the present day, covering the entire propagation pathway of these waves, from the foreshock to the ground. We describe the processes at play in the different regions of geospace, and review observational, theoretical and numerical works pertaining to the study of these waves. We conclude this review with unresolved questions and upcoming opportunities in both observations and simulations to further our understanding of these waves. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Space Science Reviews is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11214-025-01152-y
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        Text: English
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      – SubjectFull: Magnetospheric physics
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      – SubjectFull: Electromagnetic waves
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      – SubjectFull: Theory of wave motion
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