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CHIME/FRB Outriggers: Design Overview

  • Authors: Mandana Amiri, Bridget C. Andersen, Shion Andrew, Kevin Bandura, Mohit Bhardwaj, Kalyani Bhopi, Vadym Bidula, P. J. Boyle, Charanjot Brar, Mark Carlson, Tomas Cassanelli, Alyssa Cassity, Shami Chatterjee, Jean-François Cliche, Alice P. Curtin, Rachel Darlinger, David R. DeBoer, Matt Dobbs, Fengqiu Adam Dong, Gwendolyn Eadie, Emmanuel Fonseca, B. M. Gaensler, Nina Gusinskaia, Mark Halpern, Ian Hendricksen, Jason Hessels, Ronniy C. Joseph, Jane Kaczmarek, Victoria M. Kaspi, Kholoud Khairy, T. L. Landecker, Adam E. Lanman, Albert Wai Kit Lau, Mattias Lazda, Calvin Leung, Robert A. Main, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Bradley W. Meyers, Daniele Michilli, Nikola Milutinovic, Kenzie Nimmo, Gavin Noble, Ayush Pandhi, Aaron B. Pearlman, Jeffrey B. Peterson, Emily Petroff, Ziggy Pleunis, Alexander W. Pollak, Masoud Rafiei-Ravandi, Andre Renard, Mawson W. Sammons, Ketan R. Sand, Pranav Sanghavi, Paul Scholz, Vishwangi Shah, Kaitlyn Shin, Seth R. Siegel, Andrew Siemion, Jonathan L. Sievers, Kendrick Smith, David Spear, Ingrid Stairs, Keith Vanderlinde, Haochen Wang, Jacob P. Willis, Tarik J. Zegmott

Mandana Amiri et al 2025 The Astrophysical Journal 993 .

  • Provider: AAS Journals

Caption: Figure 5.

Forecasted localization region for FRBs with three combinations of bandwidth occupancy, signal-to-noise ratio (S/N), and assumptions about the impact of the ionosphere. In each case, parameters are listed above the figure. Left panel: we forecast that we achieve our localization precision goal of 50 mas for fairly typical FRBs with S/NCHIME = 20 filling the observing band and fringe-fitting for the differential sTEC in our fiducial ionosphere model. Center panel: even at lower S/NCHIME and an ionosphere five times thicker than our fiducial model, the wideband fringe fits yields reasonably good localizations. Right panel: for a narrowband FRB, precise localization requires a calibration that nulls 80% of the ionosphere.

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