The Astrophysical Journal (Jan 2024)
A Detection of Cosmological 21 cm Emission from CHIME in Cross-correlation with eBOSS Measurements of the Lyα Forest
- Mandana Amiri,
- Kevin Bandura,
- Arnab Chakraborty,
- Matt Dobbs,
- Mateus Fandino,
- Simon Foreman,
- Hyoyin Gan,
- Mark Halpern,
- Alex S. Hill,
- Gary Hinshaw,
- Carolin Höfer,
- T. L. Landecker,
- Zack Li,
- Joshua MacEachern,
- Kiyoshi Masui,
- Juan Mena-Parra,
- Nikola Milutinovic,
- Arash Mirhosseini,
- Laura Newburgh,
- Anna Ordog,
- Sourabh Paul,
- Ue-Li Pen,
- Tristan Pinsonneault-Marotte,
- Alex Reda,
- J. Richard Shaw,
- Seth R. Siegel,
- Keith Vanderlinde,
- Haochen Wang,
- D. V. Wiebe,
- Dallas Wulf,
- The CHIME Collaboration
Affiliations
- Mandana Amiri
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Kevin Bandura
- ORCiD
- Department of Computer Science and Electrical Engineering, West Virginia University , Morgantown, WV, USA; Center for Gravitational Waves and Cosmology, West Virginia University , Morgantown, WV, USA
- Arnab Chakraborty
- ORCiD
- Department of Physics, McGill University , Montreal, QC, Canada; Trottier Space Institute, McGill University , Montreal, QC, Canada
- Matt Dobbs
- ORCiD
- Department of Physics, McGill University , Montreal, QC, Canada; Trottier Space Institute, McGill University , Montreal, QC, Canada
- Mateus Fandino
- ORCiD
- Department of Physical Sciences, Thompson Rivers University , Kamloops, BC, Canada
- Simon Foreman
- ORCiD
- Department of Physics, Arizona State University , Tempe, AZ, USA
- Hyoyin Gan
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Mark Halpern
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Alex S. Hill
- ORCiD
- Department of Computer Science, Math, Physics, and Statistics, University of British Columbia-Okanagan , Kelowna, BC, Canada; Dominion Radio Astrophysical Observatory, Herzberg Astronomy & Astrophysics Research Centre , National Research Council Canada, Penticton, BC, Canada
- Gary Hinshaw
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Carolin Höfer
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]; Kapteyn Astronomical Institute, University of Groningen , Groningen, The Netherlands
- T. L. Landecker
- ORCiD
- Dominion Radio Astrophysical Observatory, Herzberg Astronomy & Astrophysics Research Centre , National Research Council Canada, Penticton, BC, Canada
- Zack Li
- ORCiD
- Canadian Institute for Theoretical Astrophysics , Toronto, ON, Canada
- Joshua MacEachern
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Kiyoshi Masui
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA, USA; Department of Physics, Massachusetts Institute of Technology , Cambridge, MA, USA
- Juan Mena-Parra
- ORCiD
- Dunlap Institute for Astronomy and Astrophysics, University of Toronto , Toronto, ON, Canada; David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto , Toronto, ON, Canada
- Nikola Milutinovic
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Arash Mirhosseini
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Laura Newburgh
- ORCiD
- Department of Physics, Yale University , New Haven, CT, USA
- Anna Ordog
- ORCiD
- Department of Computer Science, Math, Physics, and Statistics, University of British Columbia-Okanagan , Kelowna, BC, Canada; Dominion Radio Astrophysical Observatory, Herzberg Astronomy & Astrophysics Research Centre , National Research Council Canada, Penticton, BC, Canada
- Sourabh Paul
- ORCiD
- Department of Physics, McGill University , Montreal, QC, Canada; Trottier Space Institute, McGill University , Montreal, QC, Canada
- Ue-Li Pen
- ORCiD
- Canadian Institute for Theoretical Astrophysics , Toronto, ON, Canada
- Tristan Pinsonneault-Marotte
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Alex Reda
- ORCiD
- Department of Physics, Yale University , New Haven, CT, USA
- J. Richard Shaw
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Seth R. Siegel
- ORCiD
- Department of Physics, McGill University , Montreal, QC, Canada; Trottier Space Institute, McGill University , Montreal, QC, Canada; Perimeter Institute for Theoretical Physics , Waterloo, ON, Canada
- Keith Vanderlinde
- ORCiD
- Dunlap Institute for Astronomy and Astrophysics, University of Toronto , Toronto, ON, Canada; David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto , Toronto, ON, Canada
- Haochen Wang
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA, USA; Department of Physics, Massachusetts Institute of Technology , Cambridge, MA, USA
- D. V. Wiebe
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , Vancouver, BC, Canada ; [email protected]
- Dallas Wulf
- ORCiD
- Department of Physics, McGill University , Montreal, QC, Canada; Trottier Space Institute, McGill University , Montreal, QC, Canada
- The CHIME Collaboration
- DOI
- https://doi.org/10.3847/1538-4357/ad0f1d
- Journal volume & issue
-
Vol. 963,
no. 1
p. 23
Abstract
We report the detection of 21 cm emission at an average redshift $\bar{z}=2.3$ in the cross-correlation of data from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) with measurements of the Ly α forest from eBOSS. Data collected by CHIME over 88 days in the 400–500 MHz frequency band (1.8 1.8.
Keywords
