Modelling of nonlinear ion-acoustic wave structures due to Martian ionospheric loss

Kolay, Debaditya; Dutta, Dipak Kumar; Saha, Asit

doi:10.1007/s10509-022-04161-3

Cited by 6 publications

(5 citation statements)

References 71 publications

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“…In this section, the numerical calculations in the kinetic framework are used to examine the results of equations ( 10), (11), ( 16) and (18). With non-zero streaming speed of electrons v e0 and finite OAM states, the wave frequency, its growth rate and cutoff limit for instability are drastically altered.…”

Section: Resultsmentioning

confidence: 99%

“…In further studies, Buti [17] also incorpo-rated the effects of Coulomb collisions on the propagation of IA waves and found that such collisions increase damping. The prediction of the existence of super nonlinear waves was initially made in a two-component electron-ion plasma featuring Maxwellian-distributed electrons [18]. Recently, the nonlinear characteristics of ion acoustic waves that arise from the interaction between the ionospheric plasma of Mars and the solar wind are investigated [19].…”

Section: Introductionmentioning

confidence: 99%

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Ion-acoustic waves with non-planar wavefronts

BUKHARI,

SHAHID,

RAHMAN

2024

Plasma Sci. Technol.

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The ion-acoustic (IA) mode exhibiting various orbital angular momentum (OAM) states is examined in a plasma with drifting electrons. The constituent plasma species are modeled with a non-gyrotropic Maxwellian distribution and discussion of dispersion relation and growth rate of twisted IA waves under various conditions are presented. In the domain of kinetic model, the twisted IA waves are characterized by Laguerre-Gaussian (LG) solutions, where plasma distribution function and electric field are decomposed into axial and azimuthal components. The plasma response function is obtained under paraxial approximations and investigated for threshold condition of instability growth rate with helical electric field structures. The impact of an extra electron specie on the instability is demonstrated through a comparison of twisted waves for single and double electron species.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ion-acoustic waves with non-planar wavefronts

BUKHARI,

SHAHID,

RAHMAN

2024

Plasma Sci. Technol.

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“…These observations agree with our results as the duration period of ∼0.4 ms, bipolar electric field pulse of ∼1.4 mV/m, and the solitary structure frequency range of 1000Hz. Kolay et al [28] investigated the propagation dynamics of ion-acoustic waves caused by Martian ionospheric plasma with positive and negative ions with Maxwellian electrons interacting with the solar wind ions and electrons. The Sagdeev pseudo-potential formalism is used to study the nonlinear features of ion- acoustic waves.…”

Section: Arbitrary Amplitude Iaswsmentioning

confidence: 99%

“…Ahmed et al have investigated IAWs, which may exist as a result of the dynamics of several ion species in Titan's ionosphere [27]. Kolay et al [28] developed a mathematical model to examine the nonlinear dynamics of ionized particles by analyzing the propagation conditions of IAWs generated from the interaction between Martian ionospheric plasma and the solar wind.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, evidence of solitary waves in the Martian magnetosphere at altitudes of 10003500 km, using data from the Mars Atmosphere and Volatile Evolution (MAVEN) mission, has been observed [22,23]. Different mathematical models were used to investigate the nonlinear dynamics of the IAW formation [22,28]. Due to instrument limitations, ion-acoustic solitary waves are still not exactly ensured at altitudes of 250350 km.…”

Section: Introductionmentioning

confidence: 99%

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Ion-acoustic solitary waves in Mars’ lower ionosphere

Elgohary,

Farag,

Moslem

2024

Phys. Scr.

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This study suggests that ionic species dynamics generate electrostatic ion-acoustic solitary waves (IASWs) in Mars' ionosphere. Based on observational evidence, it has been determined that the dayside ionosphere of Mars, specifically within the altitude range from 200 to 350 km, predominantly consists of ions such as $O_2^+$, $O^+$, and $CO_2^+$, alongside the presence of superthermal electrons.This study investigates the occurrence, propagation, and properties of IASWs.The derivation of the evolution equation is conducted for waves with small-but-finite-amplitude. In order to analyze IASWs with large amplitude, the Sagdeev pseudo-potential is obtained. The model predicts the propagation of electrostatic IASWs within an electric field range of 1 to 6 mV/m, and pulse duration period of 0.5 to 4 ms.Fast Fourier analysis of the electric field pulse revealed pulses from 0.8 to 4 kHz.This study aims to examine the various elements that impact the presence, transmission, and characteristics of nonlinear ion-acoustic solitary waves.The derivation of the evolution equation is conducted for waves with small but finite amplitudes. In order to analyze internal atmospheric solitary waves (IASWs) with variable amplitudes, the Sagdeev pseudo-potential is acquired. The model accurately predicts the propagation of electrostatic solitary waves within an electric field range of 0.7 to 1.4 mV/m.By employing quick Fourier analysis on the electric field pulse, it was determined that an anticipated period of 0.4 ms and a frequency of around 1 kHz could be observed.

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Amplitude modulation and nonlinear dynamics of small amplitude ion‐acoustic waves in five component cometary plasmas

Kolay,

Dutta,

Sahu

2024

Contrib. Plasma Phys

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The formation and propagation dynamics of the finite‐amplitude ion‐acoustic wave (IAW) structures (e.g., soliton, breather, rogue wave, etc.) is theoretically investigated in a plasma comprising of kappa distributed solar and cometary electrons of different temperatures, a hot drift ion component, and a pair of oppositely charged oxygen ion components. The modified‐KdV (mKdV) equation is derived in order to study the propagation dynamics of the ion‐acoustic solitary wave (IASW). It is then converted into the nonlinear Schrödinger equation (NLS) through appropriate algebraic manipulation in order to observe the amplitude modulation of the IAWs. Also, the appearance of envelope soliton and the possibility of breather structure formation have been studied from the NLS equation. The dependence of plasma parameters on the formation and propagation of IAW structures has been briefly discussed. The modified‐KdV equation is reduced in a dynamical system through the application of coordinate transformation. The existence of finite‐amplitude nonlinear and supernonlinear IAWs is demonstrated by phase plane analysis. Due to the fact that the results are primarily associated with cometary plasma, they possibly provide greater insight of the nonlinear characteristics of cometary plasma.

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Modelling of nonlinear ion-acoustic wave structures due to Martian ionospheric loss

Cited by 6 publications

References 71 publications

Ion-acoustic waves with non-planar wavefronts

Ion-acoustic waves with non-planar wavefronts

Ion-acoustic solitary waves in Mars’ lower ionosphere

Amplitude modulation and nonlinear dynamics of small amplitude ion‐acoustic waves in five component cometary plasmas

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