2026ApJ...996...50K

Query : 2026ApJ...996...50K

2026ApJ...996...50K - Astrophys. J., 996, 50 (2026/January-1)

Revealing Limitation in the Standard Cosmological Model: A Redshift-dependent Hubble Constant from Fast Radio Bursts.

KALITA S., UNIYAL A., BULIK T. and MIZUNO Y.

Abstract (from CDS):

A major issue in contemporary cosmology is the persistent discrepancy, known as the Hubble tension, between the Hubble constant (H0) estimates from local measurements and those inferred from early-Universe observations under the standard Lambda cold dark matter (ΛCDM) paradigm. Recent advances have identified fast radio bursts (FRBs), a class of extragalactic phenomena observable at considerable redshifts, as a promising observational tool for probing late-time cosmology. In this study, we incorporate two complementary methodologies, machine learning algorithms and Bayesian analysis, on a set of localized FRBs to rigorously test the consistency of the ΛCDM model at late cosmic epochs. Our results reveal a statistically significant redshift-dependent variation of H0 when using separate priors on baryon density parameters Ωb or Ωbh2, indicating contradiction to the core postulate of ΛCDM. However, when the priors are combined, this redshift dependence disappears, yielding a consistent estimate of H0. We further validate that the redshift dependency of H0 can be removed within the more flexible framework of the w0waCDM model even without combining the priors. These findings highlight that the redshift evolution of H0 is not merely an artifact of the standard model but an indication of a deeper inadequacy in the ΛCDM model, supporting the need for a more flexible cosmological framework.

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

Journal keyword(s): Cosmology - Cosmological parameters - Cosmological models - Hubble constant - Neural networks - Radio transient sources

Simbad objects: 119

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Number of rows : 119
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 20240210A rB 00 39 55.040 -27 39 34.78           ~ 12 0
3 FRB 20210603A rB 00 41 05.774 +21 13 34.57           ~ 17 0
4 FRB 20240310A rB 01 10 57.700 -44 24 05.24           ~ 10 0
5 FRB 20220918A rB 01 10 57.900 -70 47 05.90           ~ 10 0
6 FRB 20231011A G 01 12 57.86 +41 44 56.8           ~ 8 0
7 FRB 20220529A rB 01 16 25.014 +20 37 56.60           ~ 15 0
8 FRB 20221116A rB 01 24 50.450 +72 39 14.10           ~ 14 0
9 FRB 20230526A rB 01 29 27.500 -52 46 07.70           ~ 12 0
10 FRB 20231229A G 01 45 52.28 +35 06 46.5           ~ 8 0
11 FRB 20180916B rB 01 58 00.750 +65 43 00.30           ~ 457 0
12 FRB 20220319D rB 02 08 42.700 +71 02 06.94           ~ 39 0
13 FRB 20230902A rB 03 29 28.100 -47 33 45.50           ~ 9 0
14 FRB 20230808F rB 03 33 12.960 -51 56 07.02           ~ 4 0
15 FRB 200906 rB 03 33 59.08 -14 04 59.5           ~ 43 0
16 FRB 20231201A G 03 38 21.43 +26 49 03.6           ~ 7 0
17 FRB 20230730A G 03 38 39.49 +33 09 33.5           ~ 7 0
18 FRB 20221106A rB 03 46 38.100 -25 39 44.90           ~ 12 0
19 FRB 20190614D rB 04 20 18.13 +73 42 24.3           ~ 37 0
20 FRB 20190418A rB 04 23 09.6000 +16 02 24.000           ~ 25 0
21 FRB 20240123A rB 04 24 32.161 +71 35 47.37           ~ 10 0
22 FRB 20221113A rB 04 45 38.640 +70 18 26.60           ~ 14 0
23 FRB 20231230A G 04 51 11.43 +02 23 38.3           ~ 8 0
24 FRB 20220726A rB 04 55 46.960 +69 55 44.80           ~ 16 0
25 FRB 20201124A rB 05 07 57.600 +26 11 24.00           ~ 307 0
26 FRB 20231123A G 05 30 29.58 +04 28 31.9           ~ 8 0
27 FRB 20181119D rB 05 31 58.6980 +33 08 52.588           ~ 933 0
28 FRB 20230311A G 06 04 26.32 +55 56 45.4           ~ 7 0
29 FRB 180301 rB 06 12 43.40 +04 33 44.8           ~ 125 0
30 FRB 20230222A G 07 07 50.49 +11 13 28.3           ~ 8 0
31 FRB 20231206A G 07 29 46.28 +56 15 22.6           ~ 7 0
32 FRB 20231220A rB 08 08 49.305 +71 43 18.17           ~ 10 0
33 FRB 20230718A rB 08 32 38.804 -40 27 06.33           ~ 12 0
34 FRB 20221027A rB 08 43 29.230 +72 06 03.50           ~ 14 0
35 FRB 20190203A rB 08 54 43.2000 +70 49 12.000           ~ 13 0
36 FRB 20220310F rB 08 58 52.920 +73 29 27.00           ~ 25 0
37 FRB 20221029A rB 09 27 51.220 +72 27 08.34           ~ 15 0
38 FRB 20231120A rB 09 35 56.150 +73 17 04.80           ~ 16 0
39 FRB 20200120E rB 09 57 56.7 +68 49 32           ~ 219 0
40 FRB 20240201A rB 10 01 49.110 +13 54 48.53           ~ 12 0
41 FRB 20230203A G 10 06 38.78 +35 41 38.8           ~ 8 0
42 FRB 20210924D rB 10 10 59.710 -04 39 08.20           ~ 2 0
43 FRB 20231226A rB 10 21 07.600 +06 07 45.90           ~ 11 0
44 FRB 20230216A rB 10 25 53.320 +03 26 12.57           ~ 12 0
45 FRB 211212 rB 10 30 40.700 +01 40 36.80           ~ 30 0
46 FRB 20240213A rB 10 35 02.703 +71 46 31.29           ~ 10 0
47 FRB 20220330D rB 10 55 00.300 +70 21 02.70           ~ 15 0
48 FRB 20230628A rB 11 07 08.810 +72 16 54.64           ~ 16 0
49 FRB 20230712A rB 11 09 26.050 +72 33 28.02           ~ 13 0
50 FRB 20240229A rB 11 34 56.311 +71 47 01.68           ~ 10 0
51 FRB 20230307A rB 11 51 07.520 +71 41 44.30           ~ 14 0
52 FRB 20181223C rB 12 04 12.0000 +27 34 48.000           ~ 24 0
53 FRB 190714 rB 12 15 55.1 -13 01 16           ~ 64 0
54 FRB 20230703A G 12 18 29.87 +48 43 47.7           ~ 7 0
55 FRB 20231128A G 13 18 18.77 +42 59 33.8           ~ 7 0
56 FRB 20191106C rB 13 18 +43.0           ~ 22 0
57 FRB 211127 rB 13 19 09.500 -18 49 28.40           ~ 32 0
58 FRB 210320 rB 13 37 16.800 -15 24 37.30           ~ 29 0
59 FRB 211203 rB 13 37 52.800 -31 22 04.00           ~ 20 0
60 FRB 190523 rB 13 48 15.6 +72 28 11           ~ 109 0
61 FRB 20190303A G 13 51 59.77 +48 06 57.6           ~ 58 0
62 FRB 20220105A rB 13 55 12.94 +22 27 59.4           ~ 19 0
63 FRB 20240119A rB 14 32 28.067 +71 45 19.55           ~ 10 0
64 FRB 20220418A rB 14 36 25.340 +70 05 45.40           ~ 24 0
65 FRB 200430 rB 15 18 49.54 +12 22 36.8           ~ 59 0
66 FRB 20230124A rB 15 27 39.900 +70 58 05.20           ~ 15 0
67 FRB 20230626A rB 15 42 31.100 +71 08 00.77           ~ 14 0
68 FRB 20230222B G 15 54 57.39 +30 53 55.3           ~ 8 0
69 FRB 20220920A rB 16 01 01.700 +70 55 07.68           ~ 28 0
70 FRB 20190520B rB 16 02 04.270 -11 17 17.32           ~ 211 0
71 FRB 20231123B rB 16 10 09.160 +70 47 06.20           ~ 14 0
72 FRB 20231005A G 16 24 06.72 +35 26 55.4           ~ 8 0
73 FRB 20190110C rB 16 27 55.2000 +41 25 12.000           ~ 36 0
74 FRB 20210405I rB 17 01 21.50 -49 32 42.8           ~ 17 0
75 FRB 20190425A rB 17 02 41.0 +21 34 34           ~ 47 0
76 FRB 20221219A rB 17 10 31.150 +71 37 36.63           ~ 19 0
77 FRB 20231223C G 17 18 10.72 +29 29 52.6           ~ 8 0
78 FRB 20201123A rB 17 34 40.560 -50 46 02.00           ~ 12 0
79 FRB 20240215A rB 17 53 43.990 +71 39 14.28           ~ 10 0
80 FRB 20230926A G 17 56 29.97 +41 48 51.5           ~ 8 0
81 FRB 20231025B G 18 03 09.14 +63 59 20.7           ~ 7 0
82 FRB 20220204A rB 18 16 54.300 +69 43 21.01           ~ 15 0
83 FRB 20221012A rB 18 43 11.690 +70 31 27.15           ~ 25 0
84 FRB 20220914A rB 18 48 13.630 +73 20 12.89           ~ 31 0
85 FRB 20220509G rB 18 50 40.800 +70 14 37.80           ~ 37 0
86 NAME FRB 190208.J1855+46 rB 18 54 07.0 +46 55 20           ~ 30 0
87 FRB 20240209A rB 19 19 33.0 +86 03 52           ~ 21 0
88 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 820 1
89 FRB 200428 rB 19 35.0 +21 57           ~ 291 0
90 FRB 210807 rB 19 56 49.000 -00 48 51.40           ~ 27 0
91 FRB 20230708A rB 20 12 56.900 -55 22 50.40           ~ 14 0
92 FRB 20220207C rB 20 40 47.890 +72 52 56.38           ~ 29 0
93 FRB 20220825A rB 20 47 55.550 +72 35 05.89           ~ 25 0
94 FRB 20220506D rB 21 12 10.760 +72 49 38.20           ~ 24 0
95 FRB 190611 rB 21 22 58.91 -79 23 51.3           ~ 82 0
96 FRB 20240114A rB 21 27 39.8350 +04 19 45.634           ~ 66 0
97 FRB 190102 rB 21 29 39.76 -79 28 32.5           ~ 83 0
98 FRB 20220208A rB 21 30 18.030 +70 02 27.75           ~ 15 0
99 FRB 191001 rB 21 33 24.373 -54 44 51.40           ~ 64 0
100 FRB 20210410D rB 21 44 20.70 -79 19 05.5           ~ 23 0
101 FRB 180924 rB 21 44 25.255 -40 54 00.10           ~ 140 0
102 FRB 181112 rB 21 49 23.630 -52 58 15.39           ~ 131 0
103 FRB 20190711A rB 21 57 40.7 -80 21 29           ~ 114 0
104 FRB 171020 rB 22 15.0 -19 40           ~ 54 0
105 FRB 190608 rB 22 16 04.74 -07 53 53.6           ~ 102 0
106 FRB 20230814A rB 22 23 53.90 +73 01 33.3           ~ 8 0
107 FRB 20220725A rB 22 27 00.000 +34 53 00.00           ~ 13 0
108 FRB 20220831A rB 22 34.8 +70 32           ~ 12 0
109 FRB 20210117A rB 22 39 55.015 -16 09 05.45           ~ 49 0
110 FRB 20230501A rB 22 40 06.520 +70 55 19.82           ~ 14 0
111 FRB 20221101B rB 22 48 51.890 +70 40 52.20           ~ 18 0
112 FRB 191228 rB 22 57 43.30 -29 35 38.7           ~ 37 0
113 FRB 20181220A rB 23 04 26.4000 +48 25 48.000           ~ 26 0
114 FRB 20231017A G 23 07 01.03 +36 39 09.6           ~ 7 0
115 FRB 20220912A rB 23 09 04.9 +48 42 25           ~ 126 0
116 FRB 20230521B rB 23 18 42.840 +71 31 19.07           ~ 10 0
117 FRB 20220307B rB 23 23 29.880 +72 11 32.59           ~ 26 0
118 FRB 20220610A rB 23 24 17.569 -33 30 49.37           ~ 31 0
119 FRB 20220501C rB 23 29 50.000 -32 27 00.00           ~ 12 0

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