activity
20222026
most citedDetection of Cosmological 21 cm Emission with the Canadian Hydrogen Intensity Mapping Experiment

92 citations · 122 across the 15 of their papers we have counts for

collaborators

15 papers

astro-ph.IM2026

The Canadian Galactic Emission Mapper (CGEM): A Cosmic Microwave Foreground Experiment

Parham Zarei, Pedro Villalba-González, Mandana Amiri +12

The Canadian Galactic Emission Mapper (CGEM) is a 4-meter single-dish radio telescope located at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, Canada. CGEM is d…

astro-ph.IM2026

The Canadian Galactic Emission Mapper: A New 8-10 GHz Telescope to Map the Polarization of the Northern Sky

Joshua MacEachern, Mandana Amiri, Charles L. Bennett +12

The Canadian Galactic Emission Mapper (CGEM) radio telescope is mapping polarized Galactic foregrounds from 8-10 GHz to aid in the search for B-modes in the Cosmic Microwave Backgr…

astro-ph.CO2026

Interpretation of 21 cm Auto Power Spectrum Measurement at by the Canadian Hydrogen Intensity Mapping Experiment

CHIME Collaboration, Mandana Amiri, Kevin Bandura +21

Observations with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) have been used to measure the 21 cm intensity mapping auto power spectrum, at , over a frequen…

astro-ph.CO2026

The Squeezed Bispectrum from CHIME HI Emission and Planck CMB Lensing: Current Sensitivity and Forecasts

CHIME Collaboration, Arnab Chakraborty, Matt Dobbs +18

Line intensity mapping using atomic hydrogen (HI) has the potential to efficiently map large volumes of the universe if the signal can be successfully separated from overwhelmingly…

astro-ph.CO2025★ 1 cited

Detection of the Cosmological 21 cm Signal in Auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment

CHIME Collaboration, Mandana Amiri, Kevin Bandura +36

We present the first detection of the cosmological 21 cm intensity mapping signal in auto-correlation at z ~ 1 with the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Usin…

astro-ph.GA2025

Discovery of a 21 cm absorption system at z=2.327 with CHIME

CHIME Collaboration, Mandana Amiri, Arnab Chakraborty +19

We report the detection of a new 21 cm absorption system associated with the radio source NVSS J164725+375218 at a redshift of z=2.327, identified through a pilot survey conducted…

astro-ph.CO2024★ 1 cited

Demonstration of hybrid foreground removal on CHIME data

Haochen Wang, Kiyoshi Masui, Kevin Bandura +15

The main challenge of 21 cm cosmology experiments is astrophysical foregrounds which are difficult to separate from the signal due to telescope systematics. An earlier study has sh…

astro-ph.IM2024★ 4 cited

Holographic Beam Measurements of the Canadian Hydrogen Intensity Mapping Experiment (CHIME)

Mandana Amiri, Arnab Chakraborty, Simon Foreman +17

We present the first results of the holographic beam mapping program for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). We describe the implementation of the holograph…

astro-ph.IM2024★ 3 cited

Beam Maps of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Measured with a Drone

Will Tyndall, Alex Reda, J. Richard Shaw +14

We present beam measurements of the CHIME telescope using a radio calibration source deployed on a drone payload. During test flights, the pulsing calibration source and the telesc…

astro-ph.GA2024

Faraday tomography with CHIME: the `tadpole' feature G137+7

Nasser Mohammed, Anna Ordog, Rebecca A. Booth +27

A direct consequence of Faraday rotation is that the polarized radio sky does not resemble the total intensity sky at long wavelengths. We analyze G137+7, which is undetectable in…

astro-ph.CO2023★ 2 cited

A Detection of Cosmological 21 cm Emission from CHIME in Cross-correlation with eBOSS Measurements of the Lyman- Forest

CHIME Collaboration, Mandana Amiri, Kevin Bandura +28

We report the detection of 21 cm emission at an average redshift in the cross-correlation of data from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) wi…

astro-ph.IM2022

Characterization of the John A. Galt telescope for radio holography with CHIME

Alex Reda, Tristan Pinsonneault-Marotte, Meiling Deng +21

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) will measure the 21 cm emission of astrophysical neutral hydrogen to probe large scale structure at redshifts z=0.8-2.5.…

astro-ph.CO2022★ 92 cited

Detection of Cosmological 21 cm Emission with the Canadian Hydrogen Intensity Mapping Experiment

CHIME Collaboration, Mandana Amiri, Kevin Bandura +30

We present a detection of 21-cm emission from large-scale structure (LSS) between redshift 0.78 and 1.43 made with the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Radio…

astro-ph.IM2022★ 19 cited

Using the Sun to Measure the Primary Beam Response of the Canadian Hydrogen Intensity Mapping Experiment

CHIME Collaboration, Mandana Amiri, Kevin Bandura +27

We present a beam pattern measurement of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) made using the Sun as a calibration source. As CHIME is a pure drift scan instru…

astro-ph.IM2022

An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment

The CHIME Collaboration, Mandana Amiri, Kevin Bandura +40

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a drift scan radio telescope operating across the 400-800 MHz band. CHIME is located at the Dominion Radio Astrophysic…