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Efficient exploration of reionization parameters for the upcoming 21 cm observations using a photon conserving semi-numerical model SCRIPT
Barun Maity, Tirthankar Roy Choudhury
One of the most promising probes to constrain the reionization history of the universe is the power spectrum of neutral hydrogen 21 cm emission fluctuations. The corresponding anal…
A Short Introduction to Reionization Physics
Tirthankar Roy Choudhury
The epoch of reionization probes the state of our universe when the very first stars formed and ionized the hydrogen atoms in the surrounding medium. Since the epoch has not yet be…
A framework to mitigate patchy reionization contamination on the primordial gravitational wave signal
Divesh Jain, Tirthankar Roy Choudhury, Suvodip Mukherjee +1
One of the major goals of future cosmic microwave background (CMB) -mode polarization experiments is the detection of primordial gravitational waves through an unbiased measurem…
Lognormal semi-numerical simulations of the Lyman- forest: comparison with full hydrodynamic simulations
Bhaskar Arya, Tirthankar Roy Choudhury, Aseem Paranjape +1
Observations of the Lyman- (Ly) forest in spectra of distant quasars enable us to probe the matter power spectrum at relatively small scales. With several upcoming surveys, i…
Constraining the reionization and thermal history of the Universe using a semi-numerical photon-conserving code SCRIPT
Barun Maity, Tirthankar Roy Choudhury
Given that the reionization history of cosmic hydrogen is yet to be stringently constrained, it is worth checking the prospects of doing so using physically motivated models and av…