The Astrophysical Journal (Jan 2024)
Polarization Properties of 128 Nonrepeating Fast Radio Bursts from the First CHIME/FRB Baseband Catalog
- Ayush Pandhi,
- Ziggy Pleunis,
- Ryan Mckinven,
- B. M. Gaensler,
- Jianing Su,
- Cherry Ng,
- Mohit Bhardwaj,
- Charanjot Brar,
- Tomas Cassanelli,
- Amanda Cook,
- Alice P. Curtin,
- Victoria M. Kaspi,
- Mattias Lazda,
- Calvin Leung,
- Dongzi Li,
- Kiyoshi W. Masui,
- Daniele Michilli,
- Kenzie Nimmo,
- Aaron B. Pearlman,
- Emily Petroff,
- Masoud Rafiei-Ravandi,
- Ketan R. Sand,
- Paul Scholz,
- Kaitlyn Shin,
- Kendrick Smith,
- Ingrid Stairs
Affiliations
- Ayush Pandhi
- ORCiD
- David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada ; [email protected]; Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada
- Ziggy Pleunis
- ORCiD
- Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada; Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands; ASTRON, Netherlands Institute for Radio Astronomy , Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands
- Ryan Mckinven
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- B. M. Gaensler
- ORCiD
- David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada ; [email protected]; Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada; Department of Astronomy and Astrophysics, 1156 High Street, University of California Santa Cruz , Santa Cruz, CA 95064, USA
- Jianing Su
- ORCiD
- David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada ; [email protected]
- Cherry Ng
- ORCiD
- Laboratoire de Physique et Chimie de l’Environnement et de l’Espace—Université d’Orléans/CNRS , 45071, Orléans Cedex 02, France
- Mohit Bhardwaj
- ORCiD
- Department of Physics, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, 15213, PA, USA
- Charanjot Brar
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Tomas Cassanelli
- ORCiD
- Department of Electrical Engineering, Universidad de Chile , Av. Tupper 2007, Santiago 8370451, Chile
- Amanda Cook
- ORCiD
- David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada ; [email protected]; Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada
- Alice P. Curtin
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Victoria M. Kaspi
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Mattias Lazda
- ORCiD
- David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada ; [email protected]; Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada
- Calvin Leung
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA
- Dongzi Li
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USA
- Kiyoshi W. Masui
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Daniele Michilli
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Kenzie Nimmo
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Aaron B. Pearlman
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Emily Petroff
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street N, Waterloo, ON N25 2YL, Canada
- Masoud Rafiei-Ravandi
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Ketan R. Sand
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montreal, QC H3A 2T8, Canada; Trottier Space Institute, McGill University , 3550 rue University, Montreal, QC H3A 2A7, Canada
- Paul Scholz
- ORCiD
- Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON M5S 3H4, Canada; Department of Physics and Astronomy, York University , 4700 Keele Street, Toronto, ON MJ3 1P3, Canada
- Kaitlyn Shin
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Kendrick Smith
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street N, Waterloo, ON N25 2YL, Canada
- Ingrid Stairs
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
- DOI
- https://doi.org/10.3847/1538-4357/ad40aa
- Journal volume & issue
-
Vol. 968,
no. 2
p. 50
Abstract
We present a 400–800 MHz polarimetric analysis of 128 nonrepeating fast radio bursts (FRBs) from the first CHIME/FRB baseband catalog, increasing the total number of FRB sources with polarization properties by a factor of ∼3. A total of 89 FRBs have >6 σ linearly polarized detections, 29 FRBs fall below this significance threshold and are deemed linearly unpolarized, and for 10 FRBs, the polarization data are contaminated by instrumental polarization. For the 89 polarized FRBs, we find Faraday rotation measure (RM) amplitudes, after subtracting approximate Milky Way contributions, in the range 0.5–1160 rad m ^−2 with a median of 53.8 rad m ^−2 . Most nonrepeating FRBs in our sample have RMs consistent with Milky Way–like host galaxies, and their linear polarization fractions range from ≤10% to 100% with a median of 63%. We see marginal evidence that nonrepeating FRBs have more constraining lower limits than repeating FRBs for the host electron-density-weighted line of sight magnetic field strength. We classify the nonrepeating FRB polarization position angle (PA) profiles into four archetypes: (i) single component with constant PA (57% of the sample), (ii) single component with variable PA (10%), (iii) multiple components with a single-constant PA (22%), and (iv) multiple components with different or variable PAs (11%). We see no evidence for population-wide frequency-dependent depolarization, and, therefore, the spread in the distribution of fractional linear polarization is likely intrinsic to the FRB emission mechanism. Finally, we present a novel method to derive redshift lower limits for polarized FRBs without host galaxy identification and test this method on 20 FRBs with independently measured redshifts.
Keywords
