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Determination of z ∼ 0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping autocorrelation
The large-scale distribution of neutral hydrogen in the Universe will be luminous through its 21 cm emission. Here, for the first time, we use the auto-power spectrum of 21 cm intensity fluctuations
Dense magnetized plasma associated with a fast radio burst
The examination of archival data revealing Faraday rotation in the fast radio burst FRB 110523 is reported, indicating magnetization in the vicinity of the source itself or within a host galaxy.
Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation
In this Letter, 21 cm intensity maps acquired at the Green Bank Telescope are cross-correlated with large-scale structure traced by galaxies in the WiggleZ Dark Energy Survey. The data span the
An intensity map of hydrogen 21-cm emission at redshift z ≈ 0.8
A three-dimensional 21-cm intensity field is reported and neutral-hydrogen emission from the volumes surrounding about 10,000 galaxies (from the DEEP2 optical galaxy redshift survey) is co-added to detect the aggregate 21- cm glow at a significance of ∼4σ.
In this paper, we present results from the complete set of cosmic microwave background (CMB) radiation temperature anisotropy observations made with the Arcminute Cosmology Bolometer Array Receiver
A simulation-calibrated limit on the H i power spectrum from the GMRT Epoch of Reionization experiment
The Giant Metrewave Radio Telescope Epoch of Reionization experiment is an ongoing effort to measure the power spectrum from neutral hydrogen at high redshift. We have previously reported an upper
Canadian Hydrogen Intensity Mapping Experiment (CHIME) pathfinder
A pathfinder version of CHIME (the Canadian Hydrogen Intensity Mapping Experiment) is currently being commissioned at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC. The
Baryon acoustic oscillation intensity mapping of dark energy.
Here it is shown how the study of acoustic oscillation in the 21 cm brightness can be accomplished by economical three-dimensional intensity mapping, and may be the starting point for a new class of dark energy experiments dedicated to large angular scale mapping of the radio sky, shedding light on dark energy.
Optical and X-Ray Observations of the Merging Cluster AS1063
We present the first in-depth analysis of the massive cluster AS1063. This is one of the hottest X-ray clusters discovered to date and is undergoing a major merging event. The average temperature of
The GMRT Epoch of Reionization experiment: a new upper limit on the neutral hydrogen power spectrum at z≈ 8.6
We present a new upper limit to the 21cm power spectrum during the Epoch of Reionization (EoR) which constrains reionization models with an unheated IGM. The GMRT-EoR experiment is an ongoing effort