194 citations · 923 across the 11 of their papers we have counts for
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Emulating the Global 21-cm Signal from Cosmic Dawn and Reionization
Aviad Cohen, Anastasia Fialkov, Rennan Barkana +1
The 21-cm signal of neutral hydrogen is a sensitive probe of the Epoch of Reionization (EoR) and Cosmic Dawn. Currently operating radio telescopes have ushered in a data-driven era…
Results from EDGES High-Band: III. New Constraints on Parameters of the Early Universe
Raul A. Monsalve, Anastasia Fialkov, Judd D. Bowman +5
We present new constraints on parameters of cosmic dawn and the epoch of reionization derived from the EDGES High-Band spectrum ( MHz). The parameters are probed by evaluat…
Constraining Baryon--Dark Matter Scattering with the Cosmic Dawn 21-cm Signal
Anastasia Fialkov, Rennan Barkana, Aviad Cohen
The recent detection of an anomalously strong 21-cm signal of neutral hydrogen from Cosmic Dawn by the EDGES Low-Band radio experiment can be explained if cold dark matter particle…
SARAS 2 constraints on global 21-cm signals from the Epoch of Reionization
Saurabh Singh, Ravi Subrahmanyan, N. Udaya Shankar +8
Spectral distortions in the cosmic microwave background over the 40--200~MHz band are imprinted by neutral hydrogen in the intergalactic medium prior to the end of reionization. Th…
Charting the Parameter Space of the 21-cm Power Spectrum
Aviad Cohen, Anastasia Fialkov, Rennan Barkana
The high-redshift 21-cm signal of neutral hydrogen is expected to be observed within the next decade and will reveal epochs of cosmic evolution that have been previously inaccessib…
First results on the Epoch of Reionization from First Light with SARAS 2
Saurabh Singh, Ravi Subrahmanyan, N. Udaya Shankar +8
Long wavelength spectral distortions in the Cosmic Microwave Background arising from the 21-cm transition in neutral Hydrogen are a key probe of Cosmic Dawn and the Epoch of Reioni…
Charting the Parameter Space of the Global 21-cm Signal
Aviad Cohen, Anastasia Fialkov, Rennan Barkana +1
The early star-forming Universe is still poorly constrained, with the properties of high-redshift stars, the first heating sources, and reionization highly uncertain. This leaves o…
Constraining the redshifted 21-cm signal with the unresolved soft X-ray background
Anastasia Fialkov, Aviad Cohen, Rennan Barkana +1
We use the observed unresolved cosmic X-ray background (CXRB) in the 0.5-2 keV band and existing upper limits on the 21-cm power spectrum to constrain the high-redshift population…
The 21-cm BAO signature of enriched low-mass galaxies during cosmic reionization
Aviad Cohen, Anastasia Fialkov, Rennan Barkana
Studies of the formation of the first stars have established that they formed in small halos of via molecular hydrogen cooling. Since a low level of ul…
Reconstructing the nature of the first cosmic sources from the anisotropic 21-cm signal
Anastasia Fialkov, Rennan Barkana, Aviad Cohen
The redshifted 21-cm background is expected to be a powerful probe of the early Universe, carrying both cosmological and astrophysical information from a wide range of redshifts. I…