What does the first highly redshifted 21-cm detection tell us about early galaxies?

J Mirocha, SR Furlanetto - Monthly Notices of the Royal …, 2019 - academic.oup.com
ABSTRACT The Experiment to Detect the Global Epoch of Reionization Signature (EDGES)
recently reported a strong 21-cm absorption signal relative to the cosmic microwave …

Constraining primordial black holes as dark matter using the global 21-cm signal with X-ray heating and excess radio background

S Mittal, A Ray, G Kulkarni… - Journal of Cosmology and …, 2022 - iopscience.iop.org
Using the global 21-cm signal measurement by the EDGES collaboration, we derive
constraints on the fraction of the dark matter that is in the form of primordial black holes …

Testing for calibration systematics in the EDGES low-band data using Bayesian model selection

PH Sims, JC Pober - Monthly Notices of the Royal Astronomical …, 2020 - academic.oup.com
Cosmic Dawn (CD), when the first stars and proto-galaxies began to form, is commonly
expected to be accompanied by an absorption signature at radio frequencies. This feature …

Nebular emission from young stellar populations including binary stars

M Lecroq, S Charlot, A Bressan… - Monthly Notices of …, 2024 - academic.oup.com
We investigate the nebular emission produced by young stellar populations using the new
galsevn model based on the combination of the sevn population-synthesis code including …

An effective model for the cosmic-dawn 21-cm signal

JB Muñoz - Monthly Notices of the Royal Astronomical Society, 2023 - academic.oup.com
The 21-cm signal holds the key to understanding the first structure formation during cosmic
dawn. Theoretical progress over the last decade has focused on simulations of this signal …

Constraining noncold dark matter models with the global 21-cm signal

A Schneider - Physical Review D, 2018 - APS
Any particle dark matter (DM) scenario featuring a suppressed power spectrum of
astrophysical relevance results in a delay of galaxy formation. As a consequence, such …

Bayesian constraints on the global 21-cm signal from the Cosmic Dawn

G Bernardi, JTL Zwart, D Price… - Monthly Notices of …, 2016 - academic.oup.com
The birth of the first luminous sources and the ensuing epoch of reionization are best studied
via the redshifted 21-cm emission line, the signature of the first two imprinting the last. In this …

Probing the small-scale matter power spectrum with large-scale 21-cm data

JB Muñoz, C Dvorkin, FY Cyr-Racine - Physical Review D, 2020 - APS
The distribution of matter fluctuations in our universe is key for understanding the nature of
dark matter and the physics of the early cosmos. Different observables have been able to …

The REACH radiometer for detecting the 21-cm hydrogen signal from redshift z ≈ 7.5–28

E de Lera Acedo, DIL de Villiers, N Razavi-Ghods… - Nature …, 2022 - nature.com
Observations of the 21-cm line from primordial hydrogen promise to be one of the best tools
to study the early epochs of the Universe: the dark ages, the cosmic dawn and the …

The global 21-cm signal in the context of the high-z galaxy luminosity function

J Mirocha, SR Furlanetto, G Sun - Monthly Notices of the Royal …, 2017 - academic.oup.com
We build a new model for the global 21-cm signal that is calibrated to measurements of the
high-z galaxy luminosity function (LF) and further tuned to match the Thomson scattering …