13 papers
SCRIPT in the Cosmic Dawn: Distinguishing Redshift-Evolving Galaxy Populations with 21-cm Fluctuations
Janakee Raste, Tirthankar Roy Choudhury
Recent James Webb Space Telescope (JWST) observations suggest an unexpectedly high abundance of luminous galaxies at , challenging traditional models of star formatio…
Square Kilometer Array Synergies for the Epoch of Reionization and Cosmic Dawn
Anirban Chakraborty, Tirthankar R. Choudhury, Kanan K. Datta +15
Synergies with other instruments will be essential in making, verifying, and interpreting a detection of the cosmic 21-cm signal from the Epoch of Reionization (EoR) and Cosmic Daw…
Gravitational Wave Informed Inference of 21-cm Global Signal Parameters
Avinash Tiwari, Sajad A. Bhat, Tirthankar Roy Choudhury +3
Understanding how and when the first stars and galaxies formed remains one of the central challenges in modern cosmology. These structures emerged during the transition from the Da…
Reconciling large-scale Lyman- correlations with the SCRIPT Semi-numerical Model
Saptarshi Sarkar, Tirthankar Roy Choudhury
Recent analyses of high-redshift Lyman- forest observations have revealed strong correlations on scales exceeding 200 cMpc at redshift z = 6. Reproducing these large-scale corr…
Nearest Neighbour-Based Statistics for 21cm-Galaxy Cross-Correlations in the Epoch of Reionization
Anirban Chakraborty, Kwanit Gangopadhyay, Arka Banerjee +1
21cm radiation from neutral hydrogen serves as a direct probe of the Epoch of Reionization. However, both its detection and physical interpretation are severely hindered by contami…
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…