Two Indian scientists, Subhashis Roy of National Centre for Radio Astrophysics (NCRA-TIFR),Pune and Sabyasachi Pal of Indian Centre for Space Physics(ICSP), Kolkata, discovered the youngest supernova remnant within the galaxy using Giant Metrewave Radio Telescope (GMRT) near Pune. Their research work has been published in the September 2013 issue of the Astrophysical Journal, by the American Astronomical Society.
A supernova is an explosion of a massive supergiant star. It may shine with the brightness of 10 billion suns.The explosion expels much or all of a star’s material at a velocity of up to 30,000 km/s, driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant.
About thousand supernova remnants are expected to be in our galaxy. Detailed age analysis of the discovered supernova suggests that this should have occurred very recently, not older than a few hundred years, making it one of the youngest supernova remnant discovered with GMRT.