The redshifted 21 cm line is an emerging tool in cosmology, in principle permitting three-
dimensional surveys of our universe that reach unprecedentedly large volumes, previously …

Abstract The Giant Radio Array for Neutrino Detection (GRAND) is a planned large-scale
observatory of ultra-high-energy (UHE) cosmic particles, with energies exceeding 10 8 GeV …

After stars formed in the early Universe, their ultraviolet light is expected, eventually, to have
penetrated the primordial hydrogen gas and altered the excitation state of its 21-centimetre …

ABSTRACT The Large-aperture Experiment to Detect the Dark Age (LEDA) was designed to
detect the predicted O (100) mK sky-averaged absorption of the cosmic microwave …

Observations of the redshifted 21-cm line of atomic hydrogen have provided several upper
limits on the 21-cm power spectrum and a tentative detection of the sky-averaged signal at …

We derive constraints on the thermal and ionization states of the intergalactic medium (IGM)
at redshift≈ 9.1 using new upper limits on the 21-cm power spectrum measured by the …

ABSTRACT The Murchison Widefield Array (MWA) team has derived new upper limits on the
spherically averaged power spectrum of the 21-cm signal at six redshifts in the range z≈ 6.5 …

Results from EDGES High-band. I. Constraints on Phenomenological Models for the Global 21
cm Signal - IOPscience This site uses cookies. By continuing to use this site you agree to our …

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 …

Long-wavelength spectral distortions in the cosmic microwave background arising from the
21 cm transition in neutral hydrogen are a key probe of the Cosmic Dawn and the Epoch of …