35th Annual Report (2022-2023) - ENGLISH

160 Areas of Research: Theoretical Astro- particlephysicsandCosmology. The main research areas pursued by the faculty members and research scholars of the ICARD, CBPBU include probing of relativistic compact objects, gravitational collapse, dark matter and dark energy and applications of some extended theories of gravity. Coordinator: Dr Ranjan Sharma ICARD, Department of Physics, Cooch Behar Panchanan Barma University (CBPBU): Activities from 01 April 2022 till 31 March 2023 List of workshops/schools organised by ICARD: 1. ICARD, CBPBU organized a two-day national seminar titled “General Relativity and Gravitation” at the university (main) campus during 22-23 November 2022. The seminar was meant to introduce the participants to the fundamentals of General Relativity and Gravitation and give a flavour of recent progress in astrophysics and cosmology. The seminar was attended bymore than eighty participants (post- graduate students, research scholars and faculty members) from nearby colleges and universities. As a Visiting Professor, Prof. Kanak Saha of IUCAA delivered a lecture series to the 4th Semester students of the department during03-11 June 2022 PublicationsbyusingICARDfacilities: 1. K. Komathiraj, Ranjan Sharma and S. Chanda (2022), Efects of electric field and anisotropy on the mass-radius relationship of a particular class of compact stars,, Astrophys. Space Sci. (2022) 367:86; https://doi.org/10.1007/s10509-022- 04119-5 2. Bikash Chandra Paul, Shyam Das, Ranjan Sharma (2022), Anisotropic compact objects with colour-flavour- locked equation of state in Finch and Skea geometry, Eur. Phys. J. Plus 137:525; https://doi.org/10.1140/epjp/s13360- 022-02746-z 3. Shyam Das, Bikram Keshari Parida, Ranjan Sharma and Farook Rahaman (2022), Central pressure-dependent compact anisotropic stellar model and its tidal Love number, Eur. Phys. J. Plus 137:1092; https://doi.org/10.1140/epjp/s13360- 022-03292-4 4. S. Thirukkanesh, I. Saparamadu, Ranjan Sharma and S. Bhattacharya (2022), Models for charged relativistic spheres via hyper-geometric equations, P r ama n a - j . o f p h y s . 96 : 1 8 3 ; https://doi.org/10.1007/s12043-022- 02424-w 5. B. Das, K. B. Goswami, P. K. Chattopadhyay, Ranjan Sharma (2023), Core-envelope model of an anisotropic strange star with density- dependent Bag (B) parameter, Indian J. of Phys.; https://doi.org/10.1007/s12648-023- 02586-2. 6. Kunal Labar, A. Shankar, M. Das and Ranjan Sharma (2023), An insight on the origin of half-metallicity of new equiatomic quaternary Heusler alloys PtRuTiZ (Z = Al/Si): GGA and GGA + U approaches, Computational Materials Science 220, 112039 ; https://doi.org/10.1016/j.commatsci.2 023.112039 7. Koushik Ballav Goswami, Anirban Saha and Pradip Kumar Chattopadhyay