22 July 2014 Calibrating CHIME: a new radio interferometer to probe dark energy
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Abstract
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a transit interferometer currently being built at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC, Canada. We will use CHIME to map neutral hydrogen in the frequency range 400 { 800MHz over half of the sky, producing a measurement of baryon acoustic oscillations (BAO) at redshifts between 0.8 { 2.5 to probe dark energy. We have deployed a pathfinder version of CHIME that will yield constraints on the BAO power spectrum and provide a test-bed for our calibration scheme. I will discuss the CHIME calibration requirements and describe instrumentation we are developing to meet these requirements.
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Laura B. Newburgh, Laura B. Newburgh, Graeme E. Addison, Graeme E. Addison, Mandana Amiri, Mandana Amiri, Kevin Bandura, Kevin Bandura, J. Richard Bond, J. Richard Bond, Liam Connor, Liam Connor, Jean-François Cliche, Jean-François Cliche, Greg Davis, Greg Davis, Meiling Deng, Meiling Deng, Nolan Denman, Nolan Denman, Matt Dobbs, Matt Dobbs, Mateus Fandino, Mateus Fandino, Heather Fong, Heather Fong, Kenneth Gibbs, Kenneth Gibbs, Adam Gilbert, Adam Gilbert, Elizabeth Griffin, Elizabeth Griffin, Mark Halpern, Mark Halpern, David Hanna, David Hanna, Adam D. Hincks, Adam D. Hincks, Gary Hinshaw, Gary Hinshaw, Carolin Höfer, Carolin Höfer, Peter Klages, Peter Klages, Tom Landecker, Tom Landecker, Kiyoshi Masui, Kiyoshi Masui, Juan Mena Parra, Juan Mena Parra, Ue-Li Pen, Ue-Li Pen, Jeff Peterson, Jeff Peterson, Andre Recnik, Andre Recnik, J. Richard Shaw, J. Richard Shaw, Kris Sigurdson, Kris Sigurdson, Micheal Sitwell, Micheal Sitwell, Graeme Smecher, Graeme Smecher, Rick Smegal, Rick Smegal, Keith Vanderlinde, Keith Vanderlinde, Don Wiebe, Don Wiebe, } "Calibrating CHIME: a new radio interferometer to probe dark energy", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91454V (22 July 2014); doi: 10.1117/12.2056962; https://doi.org/10.1117/12.2056962
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