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Reionization constraints using Principal Component Analysis
Sourav Mitra, T. Roy Choudhury, Andrea Ferrara
Using a semi-analytical model developed by Choudhury & Ferrara (2005) we study the observational constraints on reionization via a principal component analysis (PCA). Assuming that…
Reionization and feedback in overdense regions at high redshift
Girish Kulkarni, T. Roy Choudhury
Observations of galaxy luminosity function at high redshifts typically focus on fields of view of limited sizes preferentially containing bright sources. These regions possibly are…
Cross-correlation of the HI 21-cm Signal and Lyman-alpha Forest: A Probe Of Cosmology
Tapomoy Guha Sarkar, Somnath Bharadwaj, Tirthankar Roy Choudhury +1
Separating the cosmological redshifted 21-cm signal from foregrounds is a major challenge. We present the cross-correlation of the redshifted 21-cm emission from neutral hydrogen (…