17 papers
Constraining the neutral hydrogen (HI) distribution
Minal Chhabra, Raghunath Ghara, Somnath Bharadwaj
We constrain the HI distribution by jointly modeling two independent, existing observations of the 21-cm signal, the HI density parameter measured using…
Accurate parameter inference for the Light-cone Epoch of Reionization 21-cm signal
Suman Pramanick, Anoop Krishna, Rajesh Mondal +1
The light-cone (LC) effect introduces line-of-sight (LoS) statistical inhomogeneity into the 21-cm signal. Consequently, the traditional power spectrum (PS) fails to capture the fu…
Methodological Frontiers in 21-cm Intensity Mapping: the Treatment of Systematics and Foreground Contamination
Marta Spinelli, Matilde Barberi-Squarotti, José Luis Bernal +29
The distribution of neutral hydrogen (HI) in the post-reionization universe traces the cosmic large-scale structure and therefore serves as a powerful cosmological probe. An effici…
Observations of the Cosmic Dawn and Epoch of Reionization with the SKAO: Observational Lessons Learned from Precursors and Pathfinder Instruments
Eloy de Lera Acedo, James Aguirre, Dominic Anstey +34
This chapter summarizes the observational lessons learned after two decades of observations of the Cosmic Dawn (CD) and Epoch of Reionization (EoR) with SKAO pathfinders and precur…
Observational Frontiers in the post-EoR 21-cm Intensity Mapping: Lessons from the SKA Pathfinders
Khandakar Md Asif Elahi, Somnath Bharadwaj, Philip Bull +21
The 21-cm line from neutral hydrogen has long been recognised as a promising tracer of the large-scale structure of the Universe. The line is weak however, making individual galaxy…
Brisk estimator for the angular multipoles of the redshift space bispectrum
Sukhdeep Singh Gill, Somnath Bharadwaj
The anisotropy of the redshift space bispectrum depends upon the orientation of the triangles formed by three modes with respect to the line of sight. For a triangle o…