The Astrophysical Journal (Jan 2023)
A CHIME/FRB Study of Burst Rate and Morphological Evolution of the Periodically Repeating FRB 20180916B
- Ketan R. Sand,
- Daniela Breitman,
- Daniele Michilli,
- Victoria M. Kaspi,
- Pragya Chawla,
- Emmanuel Fonseca,
- Ryan Mckinven,
- Kenzie Nimmo,
- Ziggy Pleunis,
- Kaitlyn Shin,
- Bridget C. Andersen,
- Mohit Bhardwaj,
- P. J. Boyle,
- Charanjot Brar,
- Tomas Cassanelli,
- Amanda M. Cook,
- Alice P. Curtin,
- Fengqiu Adam Dong,
- Gwendolyn M. Eadie,
- B. M. Gaensler,
- Jane Kaczmarek,
- Adam Lanman,
- Calvin Leung,
- Kiyoshi W. Masui,
- Mubdi Rahman,
- Ayush Pandhi,
- Aaron B. Pearlman,
- Emily Petroff,
- Masoud Rafiei-Ravandi,
- Paul Scholz,
- Vishwangi Shah,
- Kendrick Smith,
- Ingrid Stairs,
- David C. Stenning
Affiliations
- Ketan R. Sand
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Daniela Breitman
- ORCiD
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
- 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
- Victoria M. Kaspi
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Pragya Chawla
- ORCiD
- Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands
- Emmanuel Fonseca
- ORCiD
- Center for Gravitational Waves and Cosmology, West Virginia University , Chestnut Ridge Research Building, Morgantown, WV 26505, USA; Department of Physics and Astronomy, West Virginia University , P.O. Box 6315, Morgantown, WV 26506, USA
- Ryan Mckinven
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Kenzie Nimmo
- ORCiD
- MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- Ziggy Pleunis
- ORCiD
- Dunlap Institute for Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, 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
- Bridget C. Andersen
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Mohit Bhardwaj
- ORCiD
- Department of Physics, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
- P. J. Boyle
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Charanjot Brar
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Tomas Cassanelli
- ORCiD
- Department of Electrical Engineering, Universidad de Chile , Av. Tupper 2007, Santiago 8370451, Chile
- Amanda M. Cook
- ORCiD
- Dunlap Institute for Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada; David A. Dunlap Department of Astronomy & 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, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Fengqiu Adam Dong
- ORCiD
- Department of Physics and Astronomy, University of British Columbia , 6224 Agricultural Road, Vancouver, BC, V6T 1Z1 Canada
- Gwendolyn M. Eadie
- ORCiD
- David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada; Department of Statistical Sciences, University of Toronto , 700 University Avenue 9th Floor, Toronto, ON, M5G 1X6, Canada
- B. M. Gaensler
- ORCiD
- Dunlap Institute for Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada; David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada
- Jane Kaczmarek
- ORCiD
- CSIRO Space and Astronomy, Parkes Observatory , P.O. Box 276, Parkes NSW 2870, Australia; Department of Computer Science, Math, Physics and Statistics, University of British Columbia , Kelowna, BC, V1V 1V7, Canada
- Adam Lanman
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Calvin Leung
- 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
- 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
- Mubdi Rahman
- ORCiD
- Sidrat Research , 124 Merton Street, Suite 507, Toronto, ON, M4S 2Z2, Canada
- Ayush Pandhi
- ORCiD
- Dunlap Institute for Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada; David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto , 50 St. George Street, Toronto, ON, M5S 3H4, Canada
- Aaron B. Pearlman
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, 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, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- Paul Scholz
- ORCiD
- Dunlap Institute for Astronomy & 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
- Vishwangi Shah
- ORCiD
- Department of Physics, McGill University , 3600 rue University, Montréal, QC, H3A 2T8, Canada ; [email protected]; Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC, H3A 2A7, Canada
- 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
- David C. Stenning
- ORCiD
- Department of Statistics and Actuarial Science, Simon Fraser University , 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
- DOI
- https://doi.org/10.3847/1538-4357/acf221
- Journal volume & issue
-
Vol. 956,
no. 1
p. 23
Abstract
FRB 20180916B is a repeating fast radio burst (FRB) with a 16.3 day periodicity in its activity. In this study, we present morphological properties of 60 FRB 20180916B bursts detected by CHIME/FRB between 2018 August and 2021 December. We recorded raw voltage data for 45 of these bursts, enabling microseconds time resolution in some cases. We studied variation of spectro-temporal properties with time and activity phase. We find that the variation in dispersion measure (DM) is ≲1 pc cm ^−3 and that there is burst-to-burst variation in scattering time estimates ranging from ∼0.16 to over 2 ms, with no discernible trend with activity phase for either property. Furthermore, we find no DM and scattering variability corresponding to the recent change in rotation measure from the source, which has implications for the immediate environment of the source. We find that FRB 20180916B has thus far shown no epochs of heightened activity as have been seen in other active repeaters by CHIME/FRB, with its burst count consistent with originating from a Poissonian process. We also observe no change in the value of the activity period over the duration of our observations and set a 1 σ upper limit of 1.5 × 10 ^−4 day day ^−1 on the absolute period derivative. Finally, we discuss constraints on progenitor models yielded by our results, noting that our upper limits on changes in scattering and DM as a function of phase do not support models invoking a massive binary companion star as the origin of the 16.3 day periodicity.
Keywords
