1. “Understanding Expansion History with the aid of CMB- Distance ladder tension in H0â€, presented in North Eastern Meet of Astronomers, 2019, Tezpur University
2. “Cosmic expansion history beyond ΛCDM paradigm: The cases for quissence, ω(z) and dark radiationâ€, presented inInternational Conference on Gravitation and Cosmology, December 10-13, 2019, IISER Mohali.
3. IUCAA sponsored Winter School in Astronomy, Astrophysics and cosmology, 2019, Gauhati University
4. “A study on mass of dark matter clump and formation of protogalaxy clustersâ€, presented in National Conference On Current Issues In Cosmology, Astrophysics And High Energy Physics, (CICAHEP), November 2-5, 2015, Dibrugarh University.