2021ApJ...923....1P

Query : 2021ApJ...923....1P

2021ApJ...923....1P - Astrophys. J., 923, 1-1 (2021/December-2)

Fast radio burst morphology in the first CHIME/FRB catalog.

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., MASUI K.W., MENA-PARRA J., MICHILLI D., NG C., PATEL C., RAFIEI-RAVANDI M., RAHMAN M., SANGHAVI P., SHIN K., SMITH K.M., STAIRS I.H. and TENDULKAR S.P.

Abstract (from CDS):

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.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Radio transient sources - High energy astrophysics

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 FRB 20190527A rB 00 49 48.0000 +07 59 24.000           ~ 14 0
2 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
3 FRB 20190422A rB 03 14 14.4000 +35 09 00.000           ~ 13 0
4 FRB 20190515D rB 04 28 31.2000 -05 00 36.000           ~ 10 0
5 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
6 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
7 FRB 20190601C rB 05 54 04.8000 +28 28 12.000           ~ 15 0
8 FRB 20181125A rB 09 51 45.6000 +33 55 48.000           ~ 14 0
9 FRB 20190423A rB 11 58 43.2000 +55 15 00.000           ~ 16 0
10 FRB 20190308C rB 12 33 26.4000 +44 23 24.000           ~ 13 0
11 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 820 1
12 NAME FRB 190117.J2207+17 rB 22 06 38.0 +17 22 06           ~ 28 0

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