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Statistical Distribution of Whistler Mode Waves in the Martian Induced Magnetosphere Based on MAVEN Observations.

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Title: Statistical Distribution of Whistler Mode Waves in the Martian Induced Magnetosphere Based on MAVEN Observations.
Authors: Hengle Du1, Xing Cao1 cxing@whu.edu.cn, Binbin Ni1,2 bbni@whu.edu.cn, Song Fu1, Taifeng Jin1, Xiaotong Yun1, Minyi Long1, Shuyue Pang1
Source: Journal of Geophysical Research. Space Physics. Apr2024, Vol. 129 Issue 4, p1-10. 10p.
Subject Terms: Distribution (Probability theory), Magnetosphere, Martian atmosphere, Electromagnetic waves, Magnetic fields
Abstract: Whistler mode waves are a common type of electromagnetic waves in the Martian induced magnetosphere. Using high-resolution magnetic field data from the Magnetometer (MAG) instrument onboard Mars Atmosphere and Volatile Evolution (MAVEN) from October 2014 to November 2022, we perform a detailed analysis of the statistical distribution of the occurrence rate, averaged amplitude, peak frequency, wave normal angle and ellipticity of left-hand and right-hand polarized whistler mode waves in the Martian induced magnetosphere. Our results show that whistler mode waves are mainly observed in the subsolar and magnetic pileup region, with the occurrence rate of right-hand mode waves higher than that of left-hand mode waves. The averaged wave amplitude ranges from 0.02 to 0.13 nT and peak wave frequency ranges from 2 to 9 Hz. We also find that the wave normal angles for both left-hand and right-hand polarized whistler waves are relatively larger in the subsolar region and magnetic pileup region where the corresponding wave ellipticity is closer to the linear polarization. Our results are valuable to in-depth understanding of the generation mechanism of whistler mode waves as well as their contributions to the electron dynamics in the Martian induced magnetosphere. [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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PubTypeId: academicJournal
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  Label: Title
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  Data: Statistical Distribution of Whistler Mode Waves in the Martian Induced Magnetosphere Based on MAVEN Observations.
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  Data: <searchLink fieldCode="AR" term="%22Hengle+Du%22">Hengle Du</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xing+Cao%22">Xing Cao</searchLink><relatesTo>1</relatesTo><i> cxing@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Binbin+Ni%22">Binbin Ni</searchLink><relatesTo>1,2</relatesTo><i> bbni@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Song+Fu%22">Song Fu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Taifeng+Jin%22">Taifeng Jin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xiaotong+Yun%22">Xiaotong Yun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Minyi+Long%22">Minyi Long</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shuyue+Pang%22">Shuyue Pang</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>. Apr2024, Vol. 129 Issue 4, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Distribution+%28Probability+theory%29%22">Distribution (Probability theory)</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetosphere%22">Magnetosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Martian+atmosphere%22">Martian atmosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink>
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  Label: Abstract
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  Data: Whistler mode waves are a common type of electromagnetic waves in the Martian induced magnetosphere. Using high-resolution magnetic field data from the Magnetometer (MAG) instrument onboard Mars Atmosphere and Volatile Evolution (MAVEN) from October 2014 to November 2022, we perform a detailed analysis of the statistical distribution of the occurrence rate, averaged amplitude, peak frequency, wave normal angle and ellipticity of left-hand and right-hand polarized whistler mode waves in the Martian induced magnetosphere. Our results show that whistler mode waves are mainly observed in the subsolar and magnetic pileup region, with the occurrence rate of right-hand mode waves higher than that of left-hand mode waves. The averaged wave amplitude ranges from 0.02 to 0.13 nT and peak wave frequency ranges from 2 to 9 Hz. We also find that the wave normal angles for both left-hand and right-hand polarized whistler waves are relatively larger in the subsolar region and magnetic pileup region where the corresponding wave ellipticity is closer to the linear polarization. Our results are valuable to in-depth understanding of the generation mechanism of whistler mode waves as well as their contributions to the electron dynamics in the Martian induced magnetosphere. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  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: 10.1029/2023JA032210
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        Text: English
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        PageCount: 10
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      – SubjectFull: Distribution (Probability theory)
        Type: general
      – SubjectFull: Magnetosphere
        Type: general
      – SubjectFull: Martian atmosphere
        Type: general
      – SubjectFull: Electromagnetic waves
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      – SubjectFull: Magnetic fields
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      – TitleFull: Statistical Distribution of Whistler Mode Waves in the Martian Induced Magnetosphere Based on MAVEN Observations.
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            NameFull: Hengle Du
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              Text: Apr2024
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              Y: 2024
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