76 citations · 332 across the 10 of their papers we have counts for
10 papers
Overview of 21cm Experiments at high redshift with SKAO
CD Science Working Group, Gianni Bernardi, Daniela Breitman +81
We provide an overview of the eight SKAO Science Book chapters that motivate the Epoch of Reionisation and Cosmic Dawn experiments with SKA-Low. We describe the individual SKA-Low…
ELAIS-N1 deep field uGMRT Band-2: constraints on diffuse Galactic synchrotron emission power spectrum
Rashmi Sagar, Abhirup Datta, Arnab Chakraborty +13
We present high sensitivity, low radio frequency continuum observations of the ELAIS-N1 field with 32 hours of observations of the uGMRT Band-2 ( MHz) covering $5.86\,\tex…
Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes
Raghunath Ghara, Garrelt Mellema, Sambit K. Giri +3
Three-dimensional radiative transfer simulations of the epoch of reionization can produce realistic results, but are computationally expensive. On the other hand, simulations relyi…
Line of sight anisotropies in the Cosmic Dawn and EoR 21-cm power spectrum
Suman Majumdar, Kanan K. Datta, Raghunath Ghara +5
The line of sight direction in the redshifted 21-cm signal coming from the cosmic dawn and the epoch of reionization is quite unique in many ways compared to any other cosmological…
Imaging the redshifted 21-cm pattern around the first sources during the cosmic dawn using the SKA
Raghunath Ghara, T. Roy Choudhury, Kanan K. Datta +1
Understanding properties of the first sources in the Universe using the redshifted \HI ~21-cm signal is one of the major aims of present and upcoming low-frequency experiments. We…
21-cm signature of the first sources in the Universe: Prospects of detection with SKA
Raghunath Ghara, T. Roy Choudhury, Kanan K. Datta
Currently several low-frequency experiments are being planned to study the nature of the first stars using the redshifted 21-cm signal from the cosmic dawn and epoch of reionizatio…
21-cm signal from cosmic dawn - II: Imprints of the light-cone effects
Raghunath Ghara, Kanan K. Datta, T. Roy Choudhury
Details of various unknown physical processes during the cosmic dawn and the epoch of reionization can be extracted from observations of the redshifted 21-cm signal. These observat…
Modeling the neutral hydrogen distribution in the post-reionization Universe: intensity mapping
Francisco Villaescusa-Navarro, Matteo Viel, Kanan K. Datta +1
We model the distribution of neutral hydrogen (HI) in the post-reionization era and investigate its detectability in 21 cm intensity mapping with the future SKA radio telescope. We…
Constraining Quasar and IGM Properties Through Bubble Detection in Redshifted 21-cm Maps
Suman Majumdar, Somnath Bharadwaj, T. Roy Choudhury
The infrared detection of a z>7 quasar has opened up a new window to directly probe the IGM during the epoch of reionization. In this paper we theoretically consider the possibilit…
The optimal redshift for detecting ionized bubbles in HI 21-cm maps
Kanan K. Datta, Somnath Bharadwaj, T. Roy Choudhury
The detection of individual ionized bubbles in HI 21-cm maps is one of the most promising, direct probes of the epoch of reionization(EoR). Atleast 1000 hrs of observation would be…