Khagol Bulletin # 136 (Apr 2025) - ENG

| 14 | KHAG L | No. 136 - APRIL 2025 science in expanding the understanding of the universe. A special memorial session was dedicated to the late Tanuka Chattopadhyay, recognising her invaluable contributions to the field of astrostatistics. In this session, her lifelong collaborators, including Asis Kumar Chattopadhyay and Didier Fraix- Burnet, presented their final collaborative workswith her. The first day concludedwith techn i ca l presentat i ons on so l ar astrophysics and an engaging poster session that provided a platform for students and early-career researchers to showcase their innovative studies. The second day of the conference continued with a series of technical sessions chaired by distinguished experts. These sessions focused on advanced computational methods in astrophysics, the application of artificial intelligence in gravitational wave detection, and statistical modeling for cosmic microwave background analysis. A highlight of the day was the poster competition, where young researchers presented their work. Sraddha Biswas (Indian Centre for Space Physics) secured the first position, while Aswathy S. (Providence Women's College, University of Calicut) secured the second position. The conference concluded with a valedictory session led by Abisa Sinha Adhikary, convenor of the seminar, who expressed gratitude to the sponsors and participants. Contributions from the seminar were encouraged to be submitted for publication in a special bulletin of the IAPQR Transactions, ensuring that the g r oundb r eak i ng d i scuss i ons and innovations presented at the conference would be documented for future reference. The conference was coordinated by Abisa Sinha (Amity University) and Asis K. Chattopadhyay (University of Calcutta). Focused Meeting on Cosmology and Gravitation A focused Meeting on Cosmology and Gravitation was held from January 08-10, 2025, at the Department of Physics, Gauhati University (GU), Assam, in collaboration with IUCAA, Pune. The primary aim of the meeting was to c o mm e m o r a t e t h e c e n t u r y o f developments in cosmology since Friedmann's publication of the first relativistic expanding cosmological models between 1922 and 1924. The event brought together experts and researchers in the field of gravity and cosmology, focusing on current challenges and developments in these areas. The target audience for the meeting included Ph.D. students, Post-Doctoral Fellows, and faculty members working in cosmology and gravitation. The meeting was inaugurated by Utpal Sarma (Registrar, Gauhati University), who welcomed the participants and set the tone for the discussions. The inaugural talk was delivered by Naresh Dadhich (former Director and Emeritus Professor, IUCAA), who discussed the historical development of cosmology. He also presented lectures on the physical aspects of general relativity and the nature of gravitationally collapsed objects. Naresh Dadhich also engaged the public with a special talk on the conceptual development of general relativity. Kanak Saha (IUCAA) contributed to the discussions by presenting talks on the high redshift universe and the astrophysics of JWST observations, with a focus on cosmic r e i o n i s a t i o n h i s t o r y . P r a v a b a t i Chingangbam (IIA) spoke about testing the C o smo l o g i c a l P r i n c i p l e t h r o u g h observations, while Shadab Alam (TIFR) discussed methods for testing general relativity, dark energy physics, and modified gravity theories by observing large-scale structures. Umananda Dev Goswami (Dibrugarh University) spoke about the possibility of testing modified