Nonlinear ion-acoustic waves at Venus ionosphere

Sayed, Fatema; Turky, A; Koramy, R. A. El; Moslem, W. M.

doi:10.1016/j.asr.2020.06.023

Cited by 17 publications

(10 citation statements)

References 31 publications

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“…In addition, the amplitude of the solitons was observed to increase, while the width decreases with an increase in Mach number. However, we observe that the electric field amplitude of the solitons in the NM sector from our model is less than that reported by Sayed et al (2020) on account of the Venusian background electron temperature, T e = 10 4 K considered by them is twice as large as ours. In addition, Sayed et al (2020) did not consider the effect of streaming solar wind particles on the Venusian ionosphere.…”

Section: Comparison With Previous Theoretical Studies Of Thecontrasting

confidence: 85%

“…However, we observe that the electric field amplitude of the solitons in the NM sector from our model is less than that reported by Sayed et al (2020) on account of the Venusian background electron temperature, T e = 10 4 K considered by them is twice as large as ours. In addition, Sayed et al (2020) did not consider the effect of streaming solar wind particles on the Venusian ionosphere. Fayad et al (2021) studied weakly nonlinear ion-acoustic solitons in the Venus ionosphere assumed to be composed of streaming O + and H + ions and Maxwellian electrons using Zakharov-Kuznetsov equation.…”

Section: Comparison With Previous Theoretical Studies Of Thecontrasting

confidence: 85%

“…However, the frequency observed is less than that of Afify et al (2021) because they had considered higher total number density of the ions ∼10 4 cm −3 . Both small and arbitrary amplitude ionacoustic solitons in an unmagnetized plasma consisting of H + and O + ions and Maxwellian electrons in the NM meridian at an altitude of ∼(200-1000) km were studied by Sayed et al (2020), who reported compressive (positive) solitons with an electric field amplitude of 44 mV m −1 . In addition, the amplitude of the solitons was observed to increase, while the width decreases with an increase in Mach number.…”

Section: Comparison With Previous Theoretical Studies Of Thementioning

confidence: 99%

“…Prasad et al (2021) reported the occurrence of ion-acoustic solitary, periodic, and superperiodic waves in the NM sector as a result of ionospheric escape from the Venus atmosphere by utilizing the Sagdeev pseudopotential analysis on the plasma model of Salem et al (2019). Sayed et al (2020) investigated the propagation of nonlinear ion-acoustic waves in Venus's plasma environment. They modeled the Venus plasma using a three-component plasma consisting of H + and O + ions and electrons following Maxwellian distribution.…”

Section: Introductionmentioning

confidence: 99%

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Electrostatic Solitary Waves in the Venusian Ionosphere Pervaded by the Solar Wind: A Theoretical Perspective

Rubia

Singh

Lakhina

et al. 2023

ApJ

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Electrostatic solitary waves (ESWs) in the Venusian ionosphere that are impinged by the solar wind are investigated using a homogeneous, collisionless, and magnetized multicomponent plasma consisting of Venusian H+ and O+ ions, Maxwellian Venusian electrons and streaming solar wind protons, and suprathermal electrons following κ − distribution. The model supports the propagation of positive potential slow O+ and H+ ion-acoustic solitons. The evolution and properties of the solitons occurring in two sectors, viz., dawn-dusk and noon-midnight sector of the Venus ionosphere at an altitude of (200–2000) km, are studied. The theoretical model predicts positive potential solitons with amplitude ∼(0.067–56) mV, width ∼(1.7–53.21) m, and velocity ∼(1.48–8.33) km s−1. The bipolar soliton electric field has amplitude ∼(0.03–27.67) mV m−1 with time duration ∼(0.34–22) ms. These bipolar electric field pulses when Fourier transformed to the frequency domain occur as a broadband electrostatic noise, with frequency varying in the range of ∼9.78 Hz–8.77 kHz. Our results can explain the observed electrostatic waves in the frequency range of 100 Hz–5.4 kHz in the Venus ionosphere by the Pioneer Venus Orbiter mission. The model can also be relevant in explaining the recent observation of ESWs in the Venus magnetosheath by the Solar Orbiter during its first gravity assist maneuver of Venus.

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Section: Comparison With Previous Theoretical Studies Of Thecontrasting

confidence: 85%

Section: Comparison With Previous Theoretical Studies Of Thecontrasting

confidence: 85%

Section: Comparison With Previous Theoretical Studies Of Thementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrostatic Solitary Waves in the Venusian Ionosphere Pervaded by the Solar Wind: A Theoretical Perspective

Rubia

Singh

Lakhina

et al. 2023

ApJ

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“…Salem et al [21] proposed the plasma expansion as a possible mechanism to explain the ionospheric ion losses. Sayed et al [22,23] examined the propagation properties of both weakly and fully nonlinear ion acoustic solitary waves. Lately, they extended their work by investigating different forms of IAWs such as periodic, cnoidal, and soliton waves, through employing Painlevé analysis to get various solutions of Kadomtsev-Petviashvili (KP) equation.…”

Section: Introductionmentioning

confidence: 99%

Effect of streaming velocity, magnetic field, and higher-order correction on the nature of ion acoustic solitons in the Venusian ionosphere

2021

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Propagation properties of weakly nonlinear ion acoustic waves are investigated in a plasma at the Venusian ionosphere. The plasma model consists of two positive cold ions (oxygen O + and hydrogen H +), as well as isothermal electrons. The basic set of fluid equations is reduced to Zakharov-Kuznetsov (ZK) equation and linear inhomogeneous ZK-type equation (LIZKT) equation. The renormalization method is adopted to obtain solitary solutions of both equations. The effects of plasma parameters and higher-order correction on the nature of the solitary waves are investigated. It is found that the wave phase velocity is supersonic, which is in agreement with the observations. Furthermore, the higher-order correction enlarges the soliton amplitude, which is suitable for describing the solitary waves when the wave amplitude grows.

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