Plasma Waves in the Distant Martian Environment: Implications for Mars' Sphere of Influence

Esman, T. M.; Espley, J. R.; Gruesbeck, J.; Klein, K. G.; Giacalone, J.

doi:10.1029/2021ja029686

Cited by 4 publications

(6 citation statements)

References 65 publications

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“…Figures 5a and 5b show that the amplitudes of most left-hand and right-hand polarized waves are smaller than 0.2 nT, and the valid sample numbers peaking at 0.04-0.05 nT. Esman et al (2021) found that the semi-amplitudes of the whistler mode waves ranged from 0.01 to 1.34 nT based on MAVEN observations. In addition, the peak frequencies of left-hand and right-hand polarized waves are generally lower than 10 Hz, with their sample numbers peaking at around 4 Hz (Figures 5e and 5f).…”

Section: Statistical Resultsmentioning

confidence: 88%

“…Esman et al. (2021) found that the semi‐amplitudes of the whistler mode waves ranged from 0.01 to 1.34 nT based on MAVEN observations. In addition, the peak frequencies of left‐hand and right‐hand polarized waves are generally lower than 10 Hz, with their sample numbers peaking at around 4 Hz (Figures 5e and 5f).…”

Section: Statistical Resultsmentioning

confidence: 99%

“…Whistler mode waves, typically observed at frequencies below the electron cyclotron frequency, are one of the most important constituents of naturally occurring electromagnetic waves (Albert, 2005; Esman et al., 2021; Omura et al., 2008; Santolik et al., 2011; Teng et al., 2023; Thorne et al., 2010; Viberg et al., 2014). These waves are present ubiquitously in various plasma environments in the solar system including those with and without intrinsic magnetic fields, such as Earth, Jupiter, Venus, Saturn, Mars, Moon (Daniels et al., 2012; Hart et al., 2022; Li et al., 2009, 2013; Perez‐Invernon et al., 2017; Russell et al., 2008; Shi et al., 2019; Sulaiman et al., 2017; Teng et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

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

Du,

Cao,

et al. 2024

JGR Space Physics

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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.

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Section: Statistical Resultsmentioning

confidence: 88%

Section: Statistical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Du,

Cao,

et al. 2024

JGR Space Physics

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“…A multi-step process to identify periods of possible wave signals in MAVEN MAG data was developed. The method is similarly described in Esman et al (2021), Esman et al (2022), andEsman (2022).…”

Section: A Semi-automated Methods For Wave Searchesmentioning

confidence: 99%

Will we find Martian lightning via Schumann resonances?

Esman,

Espley,

Gruesbeck

et al. 2023

Front. Astron. Space Sci.

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Schumann resonances are electromagnetic resonances generally associated with lightning. If they exist on Mars, Schumann resonances are expected to resonate within the ionospheric cavity at a fundamental frequency of 7–14 Hz. We conducted a search for 5–16 Hz signals below 400 km in magnetic field data from the Mars Global Surveyor (MGS) and Mars Atmosphere and Volatile Evolution (MAVEN) missions. Fast Fourier transforms and wavelet analysis were used to find these signals and investigate their characteristics further. We discuss our null results and the required steps forward to continue and improve this search. Future studies will require higher sensitivity instruments and would benefit from additional missions that reach into the lower ionosphere of Mars.

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“…The result was a time series of magnetic fluctuation power for the entire data set, which indicated periods of possible wave activity with enhanced relative spectral power when compared to the overall average spectral power. We note that this method was similarly used and described by Esman et al (2021).…”

Section: Event Identification and Initial Analysismentioning

confidence: 99%

Martian Ionospheric Magnetic Fluctuations Below 200 km

et al. 2022

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Plasma Waves in the Distant Martian Environment: Implications for Mars' Sphere of Influence

Abstract: Mars has no global intrinsic magnetic field, but has localized crustal magnetic fields (Acuña et al., 1998). The interaction between the solar wind and plasma environment around Mars produces an induced mag-

Cited by 4 publications

References 65 publications

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

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

Will we find Martian lightning via Schumann resonances?

Martian Ionospheric Magnetic Fluctuations Below 200 km

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