शोध विषय

Spacecraft Charging is the electrical charge buildup on the spacecraft due to the interaction with the space plasma. The electrostatic charge can build up on the surface of the body, as well as inside the volume, known as surface charging and bulk charging effects. Varying plasma environments driven by solar activity lead to varying degrees of charging. This project aims to build simulation tools for surface and bulk currents.

Collaborators: Prof. Soumyabrata Chakrabarty, SPASE

Radio waves undergo scattering in the inhomogeneous solar corona. The radio waves propagation is altered from rectilinear path depending on the density gradients, refractive index variation. We study propagation of the individual ray packets in the presence of realtistic solar corona plasma configuration. We are using multiple codes to simulate the propagation. We modify pyC2ray, a python-based ray propagation simulator to include coronal scattering effects.

Collaborators: Michele Bianco (ETH Zurich)

The problem of ray propagation in the solar corona is studied using learning models. The model will learn the propagation process. We use high-resolution solar radio maps and generative ML models to learn low-frequency radio wave propagation in the corona.

Collaborators: Brandon Panos (FHNW, Switzerland)

Electron beams are proposed to be generated in the solar corona. When travelling in the corona, they loose their kinetic energy into the ambient plasma. Kinetic-scale PIC simulations of electron beam propagation and wave-particle interactions in the corona.

Collaborators: Bhoosan Paradkar (CEBS, Mumbai)

We are building a versatile radio array to tackle multiple challenges in the field of sciences and enginering. In solar sciences,this instrumentation project will build solar monitoring stations (100 MHz – 10 GHz) with high time-frequency resolution, targeting solar spikes.

Collaborators: Mugundhan V., IIT Kanpur

Creating joint event lists from MWA and STIX for statistical studies of particle acceleration in solar flares.

Collaborators: Predrag, Andre Csillaghy (FHNW)

Developing theoretical framework to incorporate large-scale refraction into existing radio scattering codes.

Collaborators: Supratik, IIT Kanpur

Studying MHD wave signatures using high-resolution EUV and radio imaging spectroscopy during flares.

Collaborators: Abhishek Shrivastava, IIT BHU

End-to-end radio observation simulator (KARABO) for SKA science cases including solar flares, CMEs and quiet Sun.

Forward modelling of solar radio maps (flares/CMEs/quiet Sun) using telescope models from various instruments.

Combining VLA, RHESSI, Parker Solar Probe, Solar Orbiter and STIX observations to constrain particle acceleration mechanisms.