Webinar 5: Special Multidisciplinary Webinar

Talk 1 Probing Solar System: PPT and Video 
Talk 2 Antarctica - The Journey South: PPT and Video
Talk 3 Probing... interior and outer .... our Sun: PPT  and Video
Talk 4 Asteroseismology of Delta Scuti Stars: PPT  

This webinar consisted of four talks on a variety of topics. The summary of these are as below:

1. Probing Solar System by Professor U. C. Joshi on 4^th September 2018: Study of minor bodies in solar system (comets and asteroids) is very important to understand the formation of solar system. These possess pristine material to investigate physical conditions that existed at the time of the formation of solar system. The talk covered a brief introduction to the solar system with more emphasis on comets and asteroids.

2. Antarctica - The Journey South by Mr. Rakesh P. Rao on 5^th September 2018: The Antarctic continent spans around 14 million square kilometers in area, of which 98 % is covered with snow and ice. In last 3 decades, India has built 3 research stations; Dakshina Gangotri, Maitri and Bharati. The presentation highlighted Antarctica and Southern Ocean. This emphasized the Indian Antarctica research program.

3. Probing the hidden interior and outer atmosphere of our Sun by Professor Ashok Ambastha on 6^th September 2018: Sun is our nearest star and the only stars where it is possible to study the outer surface in fine details. However, its interior is hidden under the dense surface. Similarly, the outer atmosphere of the Sun, where a host of activities occur, is not directly visible. We discussed various techniques for probing these aspects of our Sun.

4. Asteroseismology of Delta Scuti Stars by Mr. Janaka Adassuriya on 7^th September 2018: Asteroseismology allows an unprecedented way to determine the internal structure of stars by studying their oscillations. These oscillations are radial or non-radial. The UBVRI photometry and high-resolution spectroscopy can be used to detect the pulsation frequencies of the stellar oscillations and hence determine the stellar properties.