15 citations · 42 across the 17 of their papers we have counts for
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Accelerating reionization constraints: An ANN-emulator framework for the SCRIPT Semi-numerical Model
Saptarshi Sarkar, Tirthankar Roy Choudhury
Constraining the Epoch of Reionization (EoR) with physically motivated simulations is hampered by the high cost of conventional parameter inference. We present an efficient emulato…
Can an Anti-de Sitter Vacuum in the Dark Energy Sector Explain JWST High-Redshift Galaxy and Reionization Observations?
Anirban Chakraborty, Tirthankar Roy Choudhury, Anjan Ananda Sen +1
The unexpectedly large abundance of UV-bright galaxies at discovered by the James Webb Space Telescope poses a significant challenge to the standard CDM cosmology. This w…
Capturing Small-Scale Reionization Physics: A Sub-Grid Model for Photon Sinks with SCRIPT
Tirthankar Roy Choudhury, Anirban Chakraborty
The epoch of reionization represents a major phase transition in cosmic history, during which the first luminous sources ionized the intergalactic medium (IGM). However, the small-…
Probing Reionization-Era Galaxies with JWST UV Luminosity Functions and Large-Scale Clustering
Anirban Chakraborty, Tirthankar Roy Choudhury
JWST has transformed our understanding of early galaxy formation, providing an unprecedented view of the first billion years of cosmic history. In this work, we build upon our prev…
Reionization and its sources
Anirban Chakraborty, Tirthankar Roy Choudhury
Reionization represents an important phase in the history of our Universe when ultraviolet radiation from the first luminous sources, primarily stars and accreting black holes, ion…