2025ApJ...979..160S

Query : 2025ApJ...979..160S

2025ApJ...979..160S - Astrophys. J., 979, 160 (2025/February-1)

Morphology of 137 Fast Radio Bursts Down to Microsecond Timescales from the First CHIME/FRB Baseband Catalog.

SAND K.R., CURTIN A.P., MICHILLI D., KASPI V.M., FONSECA E., NIMMO K., PLEUNIS Z., SHIN K., BHARDWAJ M., BRAR C., DOBBS M., EADIE G.M., GAENSLER B.M., JOSEPH R.C., LEUNG C., MAIN R., MASUI K.W., MCKINVEN R., PANDHI A., PEARLMAN A.B., RAFIEI-RAVANDI M., SAMMONS M.W., SMITH K. and STAIRS I.H.

Abstract (from CDS):

We present a spectro-temporal analysis of 137 fast radio bursts (FRBs) from the first CHIME/FRB baseband catalog, including 125 one-off bursts and 12 repeat bursts, down to microsecond resolution using the least-squares optimization fitting routine fitburst. We measure subburst components within burst envelopes as narrow as ∼23 μs (FWHM), with 20% of the sample displaying substructures narrower than 100 μs, offering constraints on emission mechanisms. Scattering timescales in the sample range from 30 μs to 13 ms at 600 MHz. Our measured values are compared with those in the first CHIME/FRB intensity catalog, revealing that nearly one-third of our sample exhibits additional burst components at higher time resolutions. We observe no correlations between scattering time and dispersion measure, rotation measure, or linear polarization fraction, with the latter suggesting that depolarization due to multipath propagation is negligible in our sample. Bursts with narrower envelopes (≤1 ms) in our sample exhibit higher flux densities, indicating the potential presence of submillisecond FRBs that are being missed by our real-time system below a brightness threshold. Most multicomponent bursts in our sample exhibit subburst separations of ≤1 ms, with no bursts showing separations < 41 μs, even at a time resolution of 2.56 μs, but both scattering and low signal-to-noise ratio can hinder the detection of additional components. Lastly, given the morphological diversity of our sample, we suggest that one-off and repeating FRBs can come from different classes but have overlapping property distributions.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Radio bursts - Radio transient sources

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 145

goto Full paper

goto View the references in ADS

Number of rows : 145
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 20190629A rB 00 25 21.6000 +12 40 12.000           ~ 11 0
2 FRB 20190102A rB 00 37 02.4000 +26 43 12.000           ~ 15 0
3 FRB 20190411C rB 00 37 19.2000 +20 30 00.000           ~ 14 0
4 FRB 20190628C rB 00 46 04.8000 +48 35 24.000           ~ 10 0
5 FRB 20181219C rB 01 11 04.8000 +14 06 36.000           ~ 9 0
6 FRB 20190102B rB 01 26 38.4000 +21 23 24.000           ~ 10 0
7 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
8 FRB 20190423D rB 01 58 45.6000 +84 48 00.000           ~ 8 0
9 FRB 20181231A rB 01 58 50.4000 +20 57 36.000           ~ 9 0
10 FRB 20190619C rB 02 33 09.6000 +36 19 48.000           ~ 7 0
11 FRB 20190607B rB 02 48 04.8000 +49 37 12.000           ~ 7 0
12 FRB 20191221A rB 02 57 21.600 +79 43 12.00           ~ 34 0
13 FRB 20190417C rB 03 02 43.2000 +71 15 36.000           ~ 12 0
14 FRB 20221022A rB 03 14 31.0 +86 52 19           ~ 16 0
15 FRB 20181222E rB 03 22 33.6000 +86 58 12.000           ~ 13 0
16 FRB 20190617B rB 03 45 43.2000 +01 09 36.000           ~ 14 0
17 FRB 20190226A rB 03 55 19.2000 +31 55 48.000           ~ 8 0
18 FRB 20190320A rB 04 06 24.0000 +63 21 36.000           ~ 8 0
19 FRB 20190110A rB 04 19 48.0000 +47 26 24.000           ~ 11 0
20 NAME FRB 180814.J0422+73 rB 04 22 44.0 +73 39 52           ~ 112 0
21 FRB 20190613B rB 04 23 00.0000 +42 40 12.000           ~ 9 0
22 FRB 20190418A rB 04 23 09.6000 +16 02 24.000           ~ 25 0
23 FRB 20190630C rB 04 33 31.2000 +80 57 00.000           ~ 8 0
24 FRB 20190609C rB 04 52 40.8000 +24 03 36.000           ~ 16 0
25 FRB 20190320E rB 05 06 33.6000 +89 09 36.000           ~ 9 0
26 FRB 20190115B rB 05 07 16.8000 +82 03 36.000           ~ 8 0
27 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
28 FRB 20190427A rB 05 15 43.2000 +07 46 12.000           ~ 9 0
29 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
30 FRB 20190517C rB 05 50 00.0000 +26 37 12.000           ~ 11 0
31 FRB 20190420B rB 06 18 55.2000 +70 07 12.000           ~ 7 0
32 FRB 20190217A rB 06 19 31.2000 +43 06 36.000           ~ 8 0
33 FRB 20190701C rB 06 25 26.4000 +81 37 48.000           ~ 13 0
34 FRB 20181209A rB 06 32 38.4000 +68 41 24.000           ~ 9 0
35 FRB 20190210B rB 06 56 43.2000 +23 42 00.000           ~ 9 0
36 FRB 20190103C rB 06 56 45.6000 +11 04 12.000           ~ 8 0
37 FRB 20190227A rB 07 13 38.4000 +56 20 24.000           ~ 7 0
38 FRB 20190606B rB 07 15 09.6000 +86 51 00.000           ~ 10 0
39 FRB 20190322A rB 07 23 00.0000 +51 18 00.000           ~ 7 0
40 FRB 20190701D rB 07 28 24.0000 +66 42 00.000           ~ 13 0
41 FRB 20190202B rB 07 37 16.8000 +32 27 00.000           ~ 11 0
42 FRB 20190619D rB 07 39 09.6000 +41 35 24.000           ~ 7 0
43 FRB 20190609D rB 07 43 45.6000 +51 41 24.000           ~ 9 0
44 FRB 20190201B rB 07 52 48.0000 +55 34 48.000           ~ 9 0
45 FRB 20181226D rB 08 00 52.8000 +22 09 36.000           ~ 9 0
46 FRB 20190604G rB 08 03 14.4000 +59 30 00.000           ~ 11 0
47 FRB 20190224C rB 08 16 12.0000 +19 46 48.000           ~ 9 0
48 FRB 20190304A rB 08 18 02.4000 +74 36 36.000           ~ 12 0
49 FRB 20181213A rB 08 30 38.4000 +73 52 12.000           ~ 9 0
50 FRB 20190303B rB 08 34 57.6000 +66 01 48.000           ~ 10 0
51 FRB 20181231B rB 08 35 04.8000 +55 59 24.000           ~ 14 0
52 FRB 20190203A rB 08 54 43.2000 +70 49 12.000           ~ 13 0
53 FRB 20190617C rB 08 57 28.8000 +35 42 00.000           ~ 8 0
54 FRB 20181229A rB 09 08 43.2000 +42 00 36.000           ~ 7 0
55 FRB 20190212B rB 09 19 57.6000 +52 06 36.000           ~ 10 0
56 FRB 20190208C rB 09 26 12.0000 +83 33 36.000           ~ 10 0
57 FRB 20190630D rB 09 33 26.4000 +08 54 00.000           ~ 10 0
58 FRB 20190612A rB 09 52 38.4000 +70 25 12.000           ~ 10 0
59 FRB 20200120E rB 09 57 56.7 +68 49 32           ~ 219 0
60 FRB 20190411B rB 10 16 07.2000 +29 13 48.000           ~ 9 0
61 FRB 20190502C rB 10 22 24.0000 +82 58 12.000           ~ 11 0
62 FRB 20190502A rB 11 00 02.4000 +59 57 00.000           ~ 8 0
63 FRB 20190619A rB 11 00 43.2000 +68 22 12.000           ~ 7 0
64 FRB 20190519E rB 11 13 07.2000 +41 39 00.000           ~ 10 0
65 FRB 20190605C rB 11 13 16.8000 -05 11 24.000           ~ 12 0
66 FRB 20190624A rB 11 13 16.8000 +69 46 48.000           ~ 9 0
67 FRB 20190130B rB 11 28 26.4000 +16 03 00.000           ~ 12 0
68 FRB 20190212C rB 11 30 16.8000 +28 08 24.000           ~ 7 0
69 FRB 20181214C rB 11 43 43.2000 +60 01 12.000           ~ 10 0
70 FRB 20190617A rB 11 54 24.0000 +83 52 12.000           ~ 11 0
71 FRB 20190423A rB 11 58 43.2000 +55 15 00.000           ~ 16 0
72 FRB 20190614A rB 11 59 09.6000 +88 19 48.000           ~ 9 0
73 FRB 20181223C rB 12 04 12.0000 +27 34 48.000           ~ 24 0
74 NAME FRB 180908.J1232+74 rB 12 32 48.0 +74 10 21           ~ 23 0
75 NAME FRB 190116.J1249+27 rB 12 49 08.0 +27 08 02           ~ 25 0
76 FRB 20190623C rB 12 49 14.4000 +86 01 48.000           ~ 7 0
77 FRB 20190621B rB 12 52 33.6000 +55 38 24.000           ~ 8 0
78 FRB 20190323B rB 12 52 52.8000 +77 14 24.000           ~ 9 0
79 FRB 20190131E rB 13 02 36.0000 +80 55 12.000           ~ 11 0
80 FRB 20190627A rB 13 03 33.6000 +00 45 00.000           ~ 9 0
81 FRB 20181231C rB 13 08 21.6000 +69 10 48.000           ~ 9 0
82 FRB 20190628A rB 13 16 14.4000 +51 45 00.000           ~ 8 0
83 FRB 20190122C rB 13 22 24.0000 +17 34 12.000           ~ 11 0
84 FRB 20190304B rB 13 39 26.4000 +24 11 24.000           ~ 9 0
85 FRB 20190621C rB 13 46 16.8000 +05 13 48.000           ~ 10 0
86 FRB 20190425B rB 14 00 28.8000 +88 36 00.000           ~ 12 0
87 FRB 20190609B rB 14 01 57.6000 +88 21 00.000           ~ 10 0
88 FRB 20190502B rB 14 08 09.6000 +64 26 24.000           ~ 10 0
89 FRB 20190124B rB 14 18 45.6000 +28 48 00.000           ~ 7 0
90 NAME FRB 190604.J1435+53 rB 14 34 47.0 +53 18 20           ~ 33 0
91 FRB 20190214C rB 14 35 28.8000 +19 21 36.000           ~ 10 0
92 FRB 20190612B rB 14 48 50.4000 +04 18 36.000           ~ 10 0
93 FRB 20181221A rB 15 22 19.2000 +25 51 36.000           ~ 17 0
94 FRB 20190619B rB 15 26 57.6000 +82 09 00.000           ~ 7 0
95 FRB 20190616A rB 15 36 07.2000 +34 28 48.000           ~ 9 0
96 FRB 20190405B rB 15 45 55.2000 +89 09 36.000           ~ 8 0
97 FRB 20181224E rB 15 57 16.8000 +07 19 12.000           ~ 10 0
98 FRB 20190520B rB 16 02 04.270 -11 17 17.32           ~ 211 0
99 FRB 20190518C rB 16 08 02.4000 +04 38 24.000           ~ 9 0
100 FRB 20190412A rB 16 13 48.0000 +61 52 12.000           ~ 8 0
101 FRB 20190206A rB 16 19 24.0000 +09 21 36.000           ~ 15 0
102 FRB 20190110C rB 16 27 55.2000 +41 25 12.000           ~ 36 0
103 FRB 20190628B rB 16 33 55.2000 +80 08 24.000           ~ 9 0
104 FRB 20190320B rB 16 41 36.0000 +39 37 48.000           ~ 9 0
105 FRB 20181228B rB 16 41 43.2000 +63 51 00.000           ~ 14 0
106 FRB 20190118A rB 16 53 14.4000 +11 33 00.000           ~ 12 0
107 FRB 20181215B rB 16 59 14.4000 +47 33 36.000           ~ 9 0
108 FRB 20190419B rB 17 01 04.8000 +86 44 24.000           ~ 9 0
109 FRB 20190425A rB 17 02 41.0 +21 34 34           ~ 47 0
110 FRB 20190204B rB 17 03 40.8000 +75 52 12.000           ~ 8 0
111 FRB 20190613A rB 17 09 36.0000 +18 51 00.000           ~ 7 0
112 FRB 20221219A rB 17 10 31.150 +71 37 36.63           ~ 19 0
113 FRB 20190111B rB 17 20 04.8000 +13 31 48.000           ~ 9 0
114 FRB 20190501B rB 17 25 48.0000 +54 21 36.000           ~ 9 0
115 FRB 20190410B rB 17 43 02.4000 +15 10 12.000           ~ 10 0
116 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
117 PSR J1745-2900 Psr 17 45 40.1640 -29 00 29.818           ~ 358 0
118 FRB 20190627C rB 17 51 31.2000 +71 34 48.000           ~ 8 0
119 FRB 20190623A rB 18 01 55.2000 +24 31 12.000           ~ 7 0
120 FRB 20190621D rB 18 02 31.2000 +78 53 24.000           ~ 11 0
121 FRB 20190430C rB 18 28 52.8000 +24 55 12.000           ~ 17 0
122 FRB 20190701A rB 18 29 52.8000 +59 02 24.000           ~ 7 0
123 FRB 20190327A rB 18 45 14.4000 +34 16 48.000           ~ 8 0
124 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 820 1
125 FRB 20190627D rB 19 41 19.2000 +43 50 24.000           ~ 9 0
126 FRB 20190622A rB 19 55 55.2000 +85 48 36.000           ~ 8 0
127 FRB 20190701B rB 20 11 43.2000 +80 10 48.000           ~ 7 0
128 FRB 20181226E rB 20 14 14.4000 +73 38 24.000           ~ 11 0
129 FRB 20190624B rB 20 18 36.0000 +73 36 36.000           ~ 12 0
130 FRB 20181221B rB 20 25 14.4000 +80 58 48.000           ~ 10 0
131 FRB 20190519G rB 20 26 43.2000 +72 20 24.000           ~ 7 0
132 NAME FRB 190222.J2052+69 rB 20 52 12.0 +69 44 42           ~ 23 0
133 FRB 20190618A rB 21 25 00.0000 +25 26 24.000           ~ 12 0
134 FRB 20190630B rB 21 52 50.4000 +43 00 36.000           ~ 8 0
135 NAME FRB 190117.J2207+17 rB 22 06 38.0 +17 22 06           ~ 28 0
136 FRB 20190224D rB 22 07 33.6000 +89 03 00.000           ~ 8 0
137 FRB 20190106B rB 22 22 31.2000 +46 07 48.000           ~ 12 0
138 FRB 20190213D rB 22 25 48.0000 +52 42 36.000           ~ 11 0
139 FRB 20190124F rB 22 35 40.8000 +05 18 00.000           ~ 8 0
140 FRB 20190519H rB 22 51 57.6000 +87 22 12.000           ~ 10 0
141 FRB 20190609A rB 23 01 12.0000 +87 56 24.000           ~ 16 0
142 FRB 20181220A rB 23 04 26.4000 +48 25 48.000           ~ 26 0
143 FRB 20220912A rB 23 09 04.9 +48 42 25           ~ 126 0
144 FRB 20190614C rB 23 46 00.0000 +35 54 36.000           ~ 9 0
145 FRB 20190608A rB 23 56 55.2000 +19 10 12.000           ~ 10 0

To bookmark this query, right click on this link: simbad:objects in 2025ApJ...979..160S and select 'bookmark this link' or equivalent in the popup menu