SWASTi-SW: Space Weather Adaptive Simulation Framework for Solar Wind and Its Relevance to the Aditya-L1 Mission

Mayank, Prateek; Vaidya, Bhargav; Chakrabarty, D.

doi:10.3847/1538-4365/ac8551

Cited by 10 publications

(8 citation statements)

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“…The description of the initiation mechanisms for the cone and FR models into the MHD domain at 0.1 au is also provided. Once the initial properties of the CMEs are defined, they undergo propagation in conjunction with the ambient SW generated by the SWASTi-SW module (Mayank et al 2022).…”

Section: Summary and Discussionmentioning

confidence: 99%

SWASTi-CME: A Physics-based Model to Study Coronal Mass Ejection Evolution and Its Interaction with Solar Wind

Mayank,

Vaidya,

Mishra

et al. 2023

ApJS

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Coronal mass ejections (CMEs) are primary drivers of space weather, and studying their evolution in the inner heliosphere is vital to prepare for a timely response. Solar wind streams, acting as background, influence their propagation in the heliosphere and associated geomagnetic storm activity. This study introduces SWASTi-CME, a newly developed MHD-based CME model integrated into the Space Weather Adaptive SimulaTion (SWASTi) framework. It incorporates a nonmagnetized elliptic cone and a magnetized flux rope CME model. To validate the model’s performance with in situ observation at L1, two Carrington rotations were chosen: one during solar maxima with multiple CMEs, and one during solar minima with a single CME. The study also presents a quantitative analysis of CME–solar wind interaction using this model. To account for ambient solar wind effects, two scenarios of different complexity in solar wind conditions were established. The results indicate that ambient conditions can significantly impact some of the CME properties in the inner heliosphere. We found that the drag force on the CME front exhibits a variable nature, resulting in asymmetric deformation of the CME leading edge. Additionally, the study reveals that the impact on the distribution of CME internal pressure primarily occurs during the initial stage, while the CME density distribution is affected throughout its propagation. Moreover, regardless of the ambient conditions, it was observed that, after a certain propagation time (t), the CME volume follows a nonfractal power-law expansion (∝t 3.03−3.33) due to the attainment of a balanced state with ambient.

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Section: Summary and Discussionmentioning

confidence: 99%

SWASTi-CME: A Physics-based Model to Study Coronal Mass Ejection Evolution and Its Interaction with Solar Wind

Mayank,

Vaidya,

Mishra

et al. 2023

ApJS

Self Cite

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“…Additionally, the PFSS + SCS magnetic field extrapolation model combined with the WSA model had the best performance in all the cases. Mayank et al (2022) used a physics-based inner heliospheric model to forecast the ambient solar wind from 0.1 au to 2.1 au. The three-dimensional MHD equations were solved using the PLUTO code.…”

Section: Numerical Simulation Of Solar Wind With the Heliospheric Upw...mentioning

confidence: 99%

“…Process flow diagram of the proposed solar wind model showing the range of numerical models involved in the inner heliospheric model (Mayank et al, 2022).…”

Section: Figurementioning

confidence: 99%

Numerical modeling of solar wind and coronal mass ejection in the inner heliosphere: A review

Zhang

Feng

Li³

et al. 2023

Front. Astron. Space Sci.

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The predictions of plasma parameters in the interplanetary medium are the core of space weather forecasts, and the magnetohydrodynamics (MHD) numerical simulation is an important tool in the prediction of plasma parameters. Operational space weather forecasts are commonly produced by a heliosphere model whose inner boundary is set at 18 Rs or beyond. Such predictions typically use empirical/physics-based inner boundary conditions to solve the MHD equations for numerical simulation. In recent years, significant progress has been made in the numerical modeling of the inner heliosphere. In this paper, the numerical modeling of solar wind and coronal mass ejection in the inner heliosphere is reviewed. In particular, different inner boundary conditions used in the simulation are investigated since the MHD solutions are predetermined by the treatment of the inner boundary conditions to a large extent. Discussion is made on further development of the heliosphere model.

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“…ASPEX (see Fig. 5) contains two ion spectrometers (Janardhan et al 2017;Goyal et al 2018;Mayank et al 2022), viz. the Solar Wind Ion Spectrometer (SWIS) and the Supra Thermal and Energetic Particle Spectrometer (STEPS).…”

Section: X-ray Observations Of the Sun With Aditya-l1mentioning

confidence: 99%

The Aditya-L1 mission of ISRO

Tripathi,

Chakrabarty,

Nandi

et al. 2022

Proc. IAU

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The Aditya-L1 is the first space-based solar observatory of the Indian Space Research Organization (ISRO). The spacecraft will carry seven payloads providing uninterrupted observations of the Sun from the first Lagrangian point. Aditya-L1 comprises four remote sensing instruments, viz. a coronagraph observing in visible and infrared, a full disk imager in Near Ultra-Violet (NUV), and two full-sun integrated spectrometers in soft X-ray and hard X-ray. In addition, there are three instruments for in-situ measurements, including a magnetometer, to study the magnetic field variations during energetic events. Aditya-L1 is truly a mission for multi-messenger solar astronomy from space that will provide comprehensive observations of the Sun across the electromagnetic spectrum and in-situ measurements in a broad range of energy, including magnetic field measurements at L1.

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SWASTi-SW: Space Weather Adaptive Simulation Framework for Solar Wind and Its Relevance to the Aditya-L1 Mission

Cited by 10 publications

References 50 publications

SWASTi-CME: A Physics-based Model to Study Coronal Mass Ejection Evolution and Its Interaction with Solar Wind

SWASTi-CME: A Physics-based Model to Study Coronal Mass Ejection Evolution and Its Interaction with Solar Wind

Numerical modeling of solar wind and coronal mass ejection in the inner heliosphere: A review

The Aditya-L1 mission of ISRO

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