Fast Radio Burst Morphology in the First CHIME/FRB Catalog

Ziggy Pleunis; Deborah C. Good; Victoria M. Kaspi; Ryan McKinven; Scott M. Ransom; Paul Scholz; Kevin Bandura; Mohit Bhardwaj; P. J. Boyle; Charanjot Brar; Tomas Cassanelli; Pragya Chawla; Fengqiu Dong; Emmanuel Fonseca; B. M. Gaensler; Alexander Josephy; Jane F. Kaczmarek; Calvin Leung; Hsiu Hsien Lin; Kiyoshi W. Masui; Juan Mena-Parra; Daniele Michilli; Cherry Ng; Chitrang Patel; Masoud Rafiei-Ravandi; Mubdi Rahman; Pranav Sanghavi; Kaitlyn Shin; Kendrick M. Smith; Ingrid H. Stairs; Shriharsh P. Tendulkar

doi:10.3847/1538-4357/ac33ac

Fast Radio Burst Morphology in the First CHIME/FRB Catalog

Ziggy Pleunis
, Deborah C. Good
, Victoria M. Kaspi
, Ryan McKinven
, Scott M. Ransom
, Paul Scholz
, Kevin Bandura
, Mohit Bhardwaj
, P. J. Boyle
, Charanjot Brar
, Tomas Cassanelli
, Pragya Chawla
, Fengqiu Dong
, Emmanuel Fonseca
, B. M. Gaensler
, Alexander Josephy
, Jane F. Kaczmarek
, Calvin Leung
, Hsiu Hsien Lin
, Kiyoshi W. Masui

Juan Mena-Parra, Daniele Michilli, Cherry Ng, Chitrang Patel, Masoud Rafiei-Ravandi, Mubdi Rahman, Pranav Sanghavi, Kaitlyn Shin, Kendrick M. Smith, Ingrid H. Stairs, Shriharsh P. Tendulkar

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

212 Scopus citations

Abstract

We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from the first CHIME/FRB catalog. The catalog consists of 62 bursts from 18 repeating sources, plus 474 one-off FRBs, detected between 2018 July 25 and 2019 July 2. We identify four observed archetypes of burst morphology ("simple broadband,""simple narrowband,""temporally complex,"and "downward drifting") and describe relevant instrumental biases that are essential for interpreting the observed morphologies. Using the catalog properties of the FRBs, we confirm that bursts from repeating sources, on average, have larger widths, and we show, for the first time, that bursts from repeating sources, on average, are narrower in bandwidth. This difference could be due to beaming or propagation effects, or it could be intrinsic to the populations. We discuss potential implications of these morphological differences for using FRBs as astrophysical tools.

Original language	English
Article number	1
Journal	Astrophysical Journal
Volume	923
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/ac33ac
State	Published - Dec 10 2021

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Pleunis, Z., Good, D. C., Kaspi, V. M., McKinven, R., Ransom, S. M., Scholz, P., Bandura, K., Bhardwaj, M., Boyle, P. J., Brar, C., Cassanelli, T., Chawla, P., Dong, F., Fonseca, E., Gaensler, B. M., Josephy, A., Kaczmarek, J. F., Leung, C., Lin, H. H., ... Tendulkar, S. P. (2021). Fast Radio Burst Morphology in the First CHIME/FRB Catalog. Astrophysical Journal, 923(1), Article 1. https://doi.org/10.3847/1538-4357/ac33ac

@article{0290a83efb5844a5aec05f1f093d38aa,

title = "Fast Radio Burst Morphology in the First CHIME/FRB Catalog",

abstract = "We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from the first CHIME/FRB catalog. The catalog consists of 62 bursts from 18 repeating sources, plus 474 one-off FRBs, detected between 2018 July 25 and 2019 July 2. We identify four observed archetypes of burst morphology ({"}simple broadband,{"}{"}simple narrowband,{"}{"}temporally complex,{"}and {"}downward drifting{"}) and describe relevant instrumental biases that are essential for interpreting the observed morphologies. Using the catalog properties of the FRBs, we confirm that bursts from repeating sources, on average, have larger widths, and we show, for the first time, that bursts from repeating sources, on average, are narrower in bandwidth. This difference could be due to beaming or propagation effects, or it could be intrinsic to the populations. We discuss potential implications of these morphological differences for using FRBs as astrophysical tools.",

author = "Ziggy Pleunis and Good, \{Deborah C.\} and Kaspi, \{Victoria M.\} and Ryan McKinven and Ransom, \{Scott M.\} and Paul Scholz and Kevin Bandura and Mohit Bhardwaj and Boyle, \{P. J.\} and Charanjot Brar and Tomas Cassanelli and Pragya Chawla and Fengqiu Dong and Emmanuel Fonseca and Gaensler, \{B. M.\} and Alexander Josephy and Kaczmarek, \{Jane F.\} and Calvin Leung and Lin, \{Hsiu Hsien\} and Masui, \{Kiyoshi W.\} and Juan Mena-Parra and Daniele Michilli and Cherry Ng and Chitrang Patel and Masoud Rafiei-Ravandi and Mubdi Rahman and Pranav Sanghavi and Kaitlyn Shin and Smith, \{Kendrick M.\} and Stairs, \{Ingrid H.\} and Tendulkar, \{Shriharsh P.\}",

note = "Publisher Copyright: {\textcopyright} 2021. The Author(s). Published by the American Astronomical Society..",

year = "2021",

month = dec,

day = "10",

doi = "10.3847/1538-4357/ac33ac",

language = "English",

volume = "923",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Pleunis, Z, Good, DC, Kaspi, VM, McKinven, R, Ransom, SM, Scholz, P, Bandura, K, Bhardwaj, M, Boyle, PJ, Brar, C, Cassanelli, T, Chawla, P, Dong, F, Fonseca, E, Gaensler, BM, Josephy, A, Kaczmarek, JF, Leung, C, Lin, HH, Masui, KW, Mena-Parra, J, Michilli, D, Ng, C, Patel, C, Rafiei-Ravandi, M, Rahman, M, Sanghavi, P, Shin, K, Smith, KM, Stairs, IH & Tendulkar, SP 2021, 'Fast Radio Burst Morphology in the First CHIME/FRB Catalog', Astrophysical Journal, vol. 923, no. 1, 1. https://doi.org/10.3847/1538-4357/ac33ac

TY - JOUR

T1 - Fast Radio Burst Morphology in the First CHIME/FRB Catalog

AU - Pleunis, Ziggy

AU - Good, Deborah C.

AU - Kaspi, Victoria M.

AU - McKinven, Ryan

AU - Ransom, Scott M.

AU - Scholz, Paul

AU - Bandura, Kevin

AU - Bhardwaj, Mohit

AU - Boyle, P. J.

AU - Brar, Charanjot

AU - Cassanelli, Tomas

AU - Chawla, Pragya

AU - Dong, Fengqiu

AU - Fonseca, Emmanuel

AU - Gaensler, B. M.

AU - Josephy, Alexander

AU - Kaczmarek, Jane F.

AU - Leung, Calvin

AU - Lin, Hsiu Hsien

AU - Masui, Kiyoshi W.

AU - Mena-Parra, Juan

AU - Michilli, Daniele

AU - Ng, Cherry

AU - Patel, Chitrang

AU - Rafiei-Ravandi, Masoud

AU - Rahman, Mubdi

AU - Sanghavi, Pranav

AU - Shin, Kaitlyn

AU - Smith, Kendrick M.

AU - Stairs, Ingrid H.

AU - Tendulkar, Shriharsh P.

PY - 2021/12/10

Y1 - 2021/12/10

N2 - We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from the first CHIME/FRB catalog. The catalog consists of 62 bursts from 18 repeating sources, plus 474 one-off FRBs, detected between 2018 July 25 and 2019 July 2. We identify four observed archetypes of burst morphology ("simple broadband,""simple narrowband,""temporally complex,"and "downward drifting") and describe relevant instrumental biases that are essential for interpreting the observed morphologies. Using the catalog properties of the FRBs, we confirm that bursts from repeating sources, on average, have larger widths, and we show, for the first time, that bursts from repeating sources, on average, are narrower in bandwidth. This difference could be due to beaming or propagation effects, or it could be intrinsic to the populations. We discuss potential implications of these morphological differences for using FRBs as astrophysical tools.

AB - We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from the first CHIME/FRB catalog. The catalog consists of 62 bursts from 18 repeating sources, plus 474 one-off FRBs, detected between 2018 July 25 and 2019 July 2. We identify four observed archetypes of burst morphology ("simple broadband,""simple narrowband,""temporally complex,"and "downward drifting") and describe relevant instrumental biases that are essential for interpreting the observed morphologies. Using the catalog properties of the FRBs, we confirm that bursts from repeating sources, on average, have larger widths, and we show, for the first time, that bursts from repeating sources, on average, are narrower in bandwidth. This difference could be due to beaming or propagation effects, or it could be intrinsic to the populations. We discuss potential implications of these morphological differences for using FRBs as astrophysical tools.

UR - https://www.scopus.com/pages/publications/85121829555

U2 - 10.3847/1538-4357/ac33ac

DO - 10.3847/1538-4357/ac33ac

M3 - Article

AN - SCOPUS:85121829555

SN - 0004-637X

VL - 923

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 1

ER -

Fast Radio Burst Morphology in the First CHIME/FRB Catalog

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