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Magnetospheric Multiscale Statistics of High Energy Electrons Trapped in Diamagnetic Cavities.

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Title: Magnetospheric Multiscale Statistics of High Energy Electrons Trapped in Diamagnetic Cavities.
Authors: Burkholder, B. L.1, Nykyri, K.1, Ma, X.1
Source: Journal of Geophysical Research. Space Physics. Jan2021, Vol. 126 Issue 1, p1-12. 12p.
Subject Terms: *Atmospheric research, Magnetospheric substorms, Electrons, Diamagnetic materials, Magnetohydrodynamics
Abstract: High-energy electrons observed in the magnetosheath must be accelerated by some mechanism that is as yet undetermined. We present observations of high-energy electrons trapped in diamagnetic cavities as measured by Magnetospheric Multiscale from 2015 to 2018. The observations support the notion of local acceleration in the reconnection quasi-potential as many of events show particles with pitch angles that are increasingly closer to 90° with increasing energy. It is suggested that these particles can end up in the loss cone and be transported to the magnetosheath. We also characterize each diamagnetic cavity as formed due to low- or high-latitude reconnection based on prevailing solar wind conditions. The character of the ions in the diamagnetic cavity is only briefly mentioned as their properties warrant another stand-alone investigation. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell 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: Magnetospheric Multiscale Statistics of High Energy Electrons Trapped in Diamagnetic Cavities.
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  Data: <searchLink fieldCode="AR" term="%22Burkholder%2C+B%2E+L%2E%22">Burkholder, B. L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Nykyri%2C+K%2E%22">Nykyri, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ma%2C+X%2E%22">Ma, X.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Space+Physics%22">Journal of Geophysical Research. Space Physics</searchLink>. Jan2021, Vol. 126 Issue 1, p1-12. 12p.
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  Data: *<searchLink fieldCode="DE" term="%22Atmospheric+research%22">Atmospheric research</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetospheric+substorms%22">Magnetospheric substorms</searchLink><br /><searchLink fieldCode="DE" term="%22Electrons%22">Electrons</searchLink><br /><searchLink fieldCode="DE" term="%22Diamagnetic+materials%22">Diamagnetic materials</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetohydrodynamics%22">Magnetohydrodynamics</searchLink>
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  Label: Abstract
  Group: Ab
  Data: High-energy electrons observed in the magnetosheath must be accelerated by some mechanism that is as yet undetermined. We present observations of high-energy electrons trapped in diamagnetic cavities as measured by Magnetospheric Multiscale from 2015 to 2018. The observations support the notion of local acceleration in the reconnection quasi-potential as many of events show particles with pitch angles that are increasingly closer to 90° with increasing energy. It is suggested that these particles can end up in the loss cone and be transported to the magnetosheath. We also characterize each diamagnetic cavity as formed due to low- or high-latitude reconnection based on prevailing solar wind conditions. The character of the ions in the diamagnetic cavity is only briefly mentioned as their properties warrant another stand-alone investigation. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell 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: 10.1029/2020JA028341
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        Text: English
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        PageCount: 12
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      – SubjectFull: Atmospheric research
        Type: general
      – SubjectFull: Magnetospheric substorms
        Type: general
      – SubjectFull: Electrons
        Type: general
      – SubjectFull: Diamagnetic materials
        Type: general
      – SubjectFull: Magnetohydrodynamics
        Type: general
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      – TitleFull: Magnetospheric Multiscale Statistics of High Energy Electrons Trapped in Diamagnetic Cavities.
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              Text: Jan2021
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