Institution: | Department of Physics, Barasat Government College, Barasat 700 124, North 24 Parganas, West Bengal, India;Inter-University Centre for Astronomy and Astrophysics, PO Box 4, Pune 411 007, India;Belda Prabhati Balika Vidyapith, Belda, Midnapur 721 424, West Bengal, India |