34th Annual Report (2021-22)

168 IUCAA CENTRES FOR ASTRONOMY RESEARCH AND DEVELOPMENT (ICARDs) Department of Physics, Cooch Behar Panchanan Barma University (CBPBU): Activities from 01 April 2021 till 31 March 2022 Coordinator: Ranjan Sharma AreaofResearch Publicationsusing ICARDfacilities: Theoretical astro-particle physics and cosmology Compact stars; Exact solutions; Modified theories of gravity; Dark matter; Gravitational collapse. The Department of Physics, CBPBU has introduced General Relativity as one of the Generic Elective papers (2.5 credits) and Astro-particle physics and Cosmology (15 credits) as Discipline Centric Elective papers in its CBCS syllabus for post- graduate students. ¬ Colloquia/Seminars: 1. Seminar talk delivered by Dr Kanak Saha, Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, Govt. of India on 10December 2021. Title of the talk: The Extraordinary Escape of Extreme-UVPhotons. 2. Seminar talk delivered by Prof. Mehedi Kalam, Department of Physics, Aliah University on04March 2022. Title of the talk: Relativity, wormhole and darkmatter. 1. Ranjan Sharma, Arpita Ghosh, Soumik Bhattacharya and Shyam Das (2021), Anisotropic generalization of Buchdahl bound for specific stellar models, Eur. Phys. J C, 81,1-5. 2. Shyam Das, Bikram Keshari Parida and Ranjan Sharma (2022), Estimating tidal Love number of a class of Compact Stars, Eur. Phys. J C, 82: 136. 3. Bikash Chandra Paul, Shyam Das and Ranjan Sharma (2022), Anisotropic Compact Objects with the colour- flavour-locked equation of state in Finch and Skea geometry, Eur. Phys. J Plus (to appear). 4. A Saha, K B Goswami and P K Chattopadhyay (2021), Anisotropic star in Vaidya-Tikekar model admitting MIT bag model equation of state in pseudo- spheroidal geometry, Astrophys. Space Sci. 366, I:98 5. K B Goswami, A Saha and P K Chattopadhyay (2022), Anisotropic compact star in modified Vaidya-Tikekar model admitting new solutions and maximum mass, Pramana-j phys. (to appear). ¬ public lectures/sky watch arranged by ICARD,etc: 1. Ranjan Sharma participated in the G r av i t ex2021 , an I n t e r na t i ona l Outreach programmes, including C o n f e r e n c e o r g a n i z e d b y t h e As t r ophy s i cs Resea r ch Cen t r e , University of KwaZulu-Natal, Durban, South Africa and delivered a talk during 9-12 August 2021. 2. Ranjan Sharma delivered a talk as an invited speaker at the High Energy Cosmic Ray Research Centre, the University of North Bengal, on 15 March 2022. ¬ received by persons connected with ICARD: The ICARD, CBPBU arranged a felicitation programme on 10 December 2021 to honour Dr Kanak Saha, IUCAA, recipient of the Shanti Swaroop Bhatnagar Prize 2021 in Physical Science. The Hon'ble Vice- Chancellor, CBPBU, Registrar, CBPBU, Dean of Faculty of Post-Graduate Studies in Science, Technology and Vocational Studies and Dean, Faculty of Post-Graduate Studies in Arts, Fine Arts, Performing Art and Traditional Art Forms were present to grace the occasion. It is noteworthy that Dr Kanak Saha is a Visiting Professor at the Department of Physics, CBPBU. Honours/distinctions/awards, etc. Dr Kanak Saha, recipient of the Shanti Swarup Bhatnagar Prize 2021 in Physical Science, being felicitated by the Hon'ble Vice-Chancellor, Cooch Behar Panchanan Barma University.