2025ApJS..277...43M

Query : 2025ApJS..277...43M

2025ApJS..277...43M - Astrophys. J., Suppl. Ser., 277, 43 (2025/April-0)

The Dispersion Measure and Scattering of Fast Radio Bursts: Contributions from Multicomponents, and Clues for the Intrinsic Properties.

MO J.-F., ZHU W. and FENG L.-L.

Abstract (from CDS):

Fast radio bursts (FRBs) are luminous, millisecond-duration transients that offer great potential for probing the Universe, yet their physical origins remain unclear. The dispersion measure (DM) and scattering time (τ) distributions provide key insights into FRBs' properties, including source population, redshift, and energy distribution. We use a simplified model of FRB source population and intrinsic Schechter function-like energy distribution, coupled with a thorough assessment of various contributors to dispersion and scattering, to replicate the joint distribution of DM and τ in the CHIME/FRB catalog. A mixed FRB source population, including both young and old progenitors, is considered. Contributions to the DM and τ from the interstellar medium (ISM), circumgalactic medium (CGM) within the host, and foreground halos are informed by the IllustrisTNG simulation, while contributions from the Milky Way, intergalactic medium, and local environment are estimated by updated models. Using Markov Chain Monte Carlo simulations, we identify the optimal model that will reproduce the DM distribution and broadly reproduce the τ distribution in the CHIME/FRB catalog. Our model suggests that the fraction of FRBs tracing star formation rate is ${f}_{\mathrm{PSFR}}=0.5{8}_{-0.27}^{+0.16}$, while ${{\rm{log}}}_{10}{{E}}_{* }{\rm{[erg]}}=42.2{7}_{-1.18}^{+1.17}$ and $\gamma =-1.6{0}_{-0.13}^{+0.11}$ in the energy distribution function. Scattering predominantly arises from the circumburst medium or the ISM and CGM of hosts, which cause a DM of ∼10 pc cm–3. Using our optimal model, we estimate FRB redshifts with two methods: DM-only and combined DM-τ. Evaluation with 68 localized FRBs reveals an rms error 0.11-0.12, and incorporation of τ has a minor effect. We further argue that the host galaxy properties of localized FRBs could be a potential tool to validate our model in the future.

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

Journal keyword(s): Radio transient sources - Intergalactic medium - Interstellar medium - Circumgalactic medium

Simbad objects: 73

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Number of rows : 73
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 20200223B rB 00 28 16.800 +29 00 36.00           ~ 25 0
2 FRB 20221116A rB 01 24 50.450 +72 39 14.10           ~ 14 0
3 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
4 FRB 20220319D rB 02 08 42.700 +71 02 06.94           ~ 39 0
5 FRB 200906 rB 03 33 59.08 -14 04 59.5           ~ 43 0
6 FRB 20190614D rB 04 20 18.13 +73 42 24.3           ~ 37 0
7 NAME FRB 180814.J0422+73 rB 04 22 44.0 +73 39 52           ~ 112 0
8 FRB 20190418A rB 04 23 09.6000 +16 02 24.000           ~ 25 0
9 FRB 20221113A rB 04 45 38.640 +70 18 26.60           ~ 14 0
10 FRB 20220726A rB 04 55 46.960 +69 55 44.80           ~ 16 0
11 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
12 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
13 FRB 180301 rB 06 12 43.40 +04 33 44.8           ~ 125 0
14 FRB 20221027A rB 08 43 29.230 +72 06 03.50           ~ 14 0
15 FRB 20220310F rB 08 58 52.920 +73 29 27.00           ~ 25 0
16 FRB 20221029A rB 09 27 51.220 +72 27 08.34           ~ 15 0
17 FRB 20231120A rB 09 35 56.150 +73 17 04.80           ~ 16 0
18 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
19 FRB 20200120E rB 09 57 56.7 +68 49 32           ~ 219 0
20 FRB 20230216A rB 10 25 53.320 +03 26 12.57           ~ 12 0
21 FRB 211212 rB 10 30 40.700 +01 40 36.80           ~ 30 0
22 NAME FRB 181030.J1054+73 rB 10 33 24.0000 +73 47 24.000           ~ 79 0
23 FRB 20220330D rB 10 55 00.300 +70 21 02.70           ~ 15 0
24 FRB 20230628A rB 11 07 08.810 +72 16 54.64           ~ 16 0
25 FRB 20230712A rB 11 09 26.050 +72 33 28.02           ~ 13 0
26 FRB 20230307A rB 11 51 07.520 +71 41 44.30           ~ 14 0
27 FRB 20181223C rB 12 04 12.0000 +27 34 48.000           ~ 24 0
28 FRB 190714 rB 12 15 55.1 -13 01 16           ~ 64 0
29 FRB 20191106C rB 13 18 +43.0           ~ 22 0
30 FRB 211127 rB 13 19 09.500 -18 49 28.40           ~ 32 0
31 FRB 210320 rB 13 37 16.800 -15 24 37.30           ~ 29 0
32 FRB 211203 rB 13 37 52.800 -31 22 04.00           ~ 20 0
33 FRB 190523 rB 13 48 15.6 +72 28 11           ~ 109 0
34 FRB 20190303A G 13 51 59.77 +48 06 57.6           ~ 58 0
35 FRB 20220105A rB 13 55 12.94 +22 27 59.4           ~ 19 0
36 FRB 20220418A rB 14 36 25.340 +70 05 45.40           ~ 24 0
37 FRB 200430 rB 15 18 49.54 +12 22 36.8           ~ 59 0
38 FRB 20230124A rB 15 27 39.900 +70 58 05.20           ~ 15 0
39 FRB 20230626A rB 15 42 31.100 +71 08 00.77           ~ 14 0
40 FRB 20220920A rB 16 01 01.700 +70 55 07.68           ~ 28 0
41 FRB 20190520B rB 16 02 04.270 -11 17 17.32           ~ 211 0
42 FRB 20231123B rB 16 10 09.160 +70 47 06.20           ~ 14 0
43 FRB 20190110C rB 16 27 55.2000 +41 25 12.000           ~ 36 0
44 FRB 20210405I rB 17 01 21.50 -49 32 42.8           ~ 17 0
45 FRB 20190425A rB 17 02 41.0 +21 34 34           ~ 47 0
46 FRB 20221219A rB 17 10 31.150 +71 37 36.63           ~ 19 0
47 FRB 20220204A rB 18 16 54.300 +69 43 21.01           ~ 15 0
48 FRB 20221012A rB 18 43 11.690 +70 31 27.15           ~ 25 0
49 FRB 20220914A rB 18 48 13.630 +73 20 12.89           ~ 31 0
50 FRB 20220509G rB 18 50 40.800 +70 14 37.80           ~ 37 0
51 FRB 200428 rB 19 35.0 +21 57           ~ 291 0
52 FRB 210807 rB 19 56 49.000 -00 48 51.40           ~ 27 0
53 FRB 20220207C rB 20 40 47.890 +72 52 56.38           ~ 29 0
54 FRB 20220825A rB 20 47 55.550 +72 35 05.89           ~ 25 0
55 FRB 20220506D rB 21 12 10.760 +72 49 38.20           ~ 24 0
56 FRB 190611 rB 21 22 58.91 -79 23 51.3           ~ 82 0
57 FRB 190102 rB 21 29 39.76 -79 28 32.5           ~ 83 0
58 FRB 20220208A rB 21 30 18.030 +70 02 27.75           ~ 15 0
59 FRB 191001 rB 21 33 24.373 -54 44 51.40           ~ 64 0
60 FRB 20210410D rB 21 44 20.70 -79 19 05.5           ~ 23 0
61 FRB 180924 rB 21 44 25.255 -40 54 00.10           ~ 140 0
62 FRB 181112 rB 21 49 23.630 -52 58 15.39           ~ 131 0
63 FRB 20190711A rB 21 57 40.7 -80 21 29           ~ 114 0
64 FRB 171020 rB 22 15.0 -19 40           ~ 54 0
65 FRB 190608 rB 22 16 04.74 -07 53 53.6           ~ 102 0
66 FRB 20210117A rB 22 39 55.015 -16 09 05.45           ~ 49 0
67 FRB 20230501A rB 22 40 06.520 +70 55 19.82           ~ 14 0
68 FRB 20221101B rB 22 48 51.890 +70 40 52.20           ~ 18 0
69 FRB 191228 rB 22 57 43.30 -29 35 38.7           ~ 37 0
70 FRB 20181220A rB 23 04 26.4000 +48 25 48.000           ~ 26 0
71 FRB 20220912A rB 23 09 04.9 +48 42 25           ~ 126 0
72 FRB 20220307B rB 23 23 29.880 +72 11 32.59           ~ 26 0
73 FRB 20220610A rB 23 24 17.569 -33 30 49.37           ~ 31 0

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