activity
20232026
most citedConstraints on the state of the IGM at using redshifted 21-cm observations with LOFAR

14 citations · 21 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.CO2026

Inferring Cosmology and Astrophysics from the High-redshift 21cm Signal with SKA-Low

Anshuman Acharya, Satadru Bag, Sabrina Berger +29

The Square Kilometre Array's low frequency telescope (SKA-Low) will enable inference of astrophysical and cosmological parameters from the redshifted 21 cm signal, probing the Cosm…

astro-ph.CO2026

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…

astro-ph.CO2026

Imaging the 21-cm Signal from the Cosmic Dawn & Epoch of Reionization and the Connection with the Global Signal

Satadru Bag, Michele Bianco, Samir Choudhuri +12

The original baseline design for SKA-Low was motivated by the ability to produce tomographic images of the redshifted 21-cm signal, thus allowing the research field to move beyond…

astro-ph.CO2026

A self-consistent analytical model for both the photoionization rate and reionization history

Christopher Cain, Kevin S. Croker, Anson D'Aloisio +4

Recent developments at the intersection of cosmology and astrophysics have highlighted the need for improved analytical models of observables that probe the Epoch of Reionization.…

astro-ph.CO2025★ 1 cited

Impact of anisotropic photon emission from sources during the epoch of reionisation

Timo P. Schwandt, Ivelin Georgiev, Sambit K. Giri +2

The reionisation of the intergalactic medium (IGM) was driven by the first stars, galaxies, and accreting black holes. However, the relative importance of these sources and the eff…

astro-ph.CO2025★ 14 cited

Constraints on the state of the IGM at using redshifted 21-cm observations with LOFAR

R. Ghara, S. Zaroubi, B. Ciardi +21

The power spectra of the redshifted 21-cm signal from the Epoch of Reionization (EoR) contain information about the ionization and thermal states of the intergalactic medium (IGM),…

astro-ph.CO2024★ 1 cited

The forest at EndEoR: The effect of Lyman Limit Systems on the End of Reionisation

Ivelin Georgiev, Garrelt Mellema, Sambit K. Giri

The final stages of cosmic reionisation (EndEoR) are expected to be strongly regulated by the residual neutral hydrogen in the already ionised regions of the Universe. Its presence…

astro-ph.CO2023

Inverse Gertsenshtein effect as a probe of high-frequency gravitational waves

Yutong He, Sambit K. Giri, Ramkishor Sharma +2

We apply the inverse Gertsenshtein effect, i.e., the graviton-photon conversion in the presence of a magnetic field, to constrain high-frequency gravitational waves (HFGWs). Using…

astro-ph.CO2023★ 5 cited

Constraining cosmic reionization by combining the kinetic Sunyaev-Zel'dovich and the 21 cm power spectra

Ivelin Georgiev, Adélie Gorce, Garrelt Mellema

During the Epoch of Reionization (EoR), the ultraviolet radiation from the first stars and galaxies ionised the neutral hydrogen of the intergalactic medium, which can emit radiati…