AR_final file_2018-19

Celebration of the National Science Day, on February 28, 2019, is an important event in IUCAA. It is the time of the year when IUCAA is open to the general public all day long, and the staff exhibits and explains the experiments and activities which are conducted in IUCAA, to the general public. The Radio Physics Lab has been demonstrating and explaining various astronomy related experiments. This year in addition to the horn, 3 m parabolic radio telescope, ASRT, Raman Spectroscopy and Muon Detector, the recently discovered Saraswati Supercluster LED model, which was made by RPL project students were presented. This supercluster was discovered in this lab by a team of scientist and students lead by Joydeep Bagchi. A brief explanation on the history of Radio Astronomy, detailed working of a radio telescope represented in block diagram for an easy understanding for the general public and different types of radio telescopes working on different types of bands around the world were also displayed. On science day, thousands of people visited IUCAA. The volunteers representing RPL were from Vishwakarma Institute of Technology, Cummins College of Engineering, and D.Y. Patil College of Engineering, Pune. On the first day, talks on basic theory, various other aspects of radio astronomy and horn antenna theory were covered. On the second day, the participants fabricated the horn antenna under expert guidance. Post- fabrication, training of observations (such as observing 21 cm hydrogen line from the Milky way) with the instrument was carried out on the third day of the workshop. This was followed by the training on the software used for data analysis of the spectrumobtained from the horn antenna. The participants were extremely enthusiastic during the activities and talks in the workshop. They understood the details in the theory of antenna and radio astronomy, the electronic equipment used in the experiment. After fabrication of the horn antenna, the participants saw the hydrogen line through their antennas and analyzed the spectrum. The coordinators were D.J. Saikia and Joydeep Bagchi . Teaching and Learning Centre (TLC), in collaboration with the RPL, organized a workshop on Radio Observations using Horn Antenna, during March 9 - 11, 2019, at IUCAA. The aim of this workshop was to initiate and promote radio astronomy observations to college and university teachers, who came from different parts of the country. There were 6 participants. WORKSHOP ON RADIO OBSERVATIONS USING HORN ANTENNA NATIONAL SCIENCE DAY On the occasion of the National Science Day, Shishir Sankhyayan and Jameer Manur (both from RPL) gave two public talks on: How we study the Large Scale Structures in the Universe? and Observe our Universe in multi wavelength, respectively. ( 164 )