Error message

Colloquium
Speaker
Piyali Chatterjee (Indian Institute of Astrophysics Bengaluru)
Date & Time
Tue, 29 August 2023, 15:00 to 16:30
Venue
Madhava Lecture Hall and Online
Resources
Abstract

At any given time, it is estimated that millions of spicules are present on the solar surface. We find an intriguing parallel between the simulated spicular forest in a solar-like atmosphere and the numerous jets of polymeric fluid in the laboratory when both are subjected to harmonic driving or Faraday excitation. In our radiative (both 2D and 3D) MHD simulations with realistic sub-surface convection, the solar surface oscillations are excited similarly to those harmonic vibrations. A forest of spicules are formed in our simulations bear substantially closer resemblance to clusters of jets observed in the solar atmosphere compared to earlier efforts. Taken together, the numerical simulations of the Sun and the laboratory fluid dynamics experiments provide insights into the mechanism underlying the ubiquity of jets.

Zoom link: https://icts-res-in.zoom.us/j/82720714104?pwd=dzdnMG1wL3NiSUNnVlVsRWlXWThpUT09

Meeting ID: 827 2071 4104

Passcode: 754198