2022ApJ...931..127C

Query : 2022ApJ...931..127C

2022ApJ...931..127C - Astrophys. J., 931, 127-127 (2022/June-1)

MARS: A New Maximum-entropy-regularized Strong Lensing Mass Reconstruction Method.

CHA S. and JEE M.J.

Abstract (from CDS):

Free-form strong-lensing (SL) mass reconstructions typically suffer from overfitting, which manifests itself as false-positive small-scale fluctuations. We present a new free-form MAximum-entropy ReconStruction (MARS) method without the assumption that light traces mass (LTM). The MARS algorithm enables us to achieve excellent convergence in source positions (∼0.''001), minimize spurious small-scale fluctuations, and provide a quasi-unique solution independently of initial conditions. Our method is tested with the publicly available synthetic SL data FF-SIMS. The comparison with the truth shows that the mass reconstruction quality is on par with those of the best-performing LTM methods published in the literature, which have been demonstrated to outperform existing free-form methods. In terms of the radial mass profile reconstruction, we achieve <1% agreement with the truth for the regions constrained by multiple images. Finally, we apply MARS to A1689 and find that the cluster mass in the SL regime is dominated by the primary halo centered on the brightest cluster galaxy and the weaker secondary halo is also coincident with the bright cluster member ∼160 kpc northeast. Within the SL field, the A1689 radial profile is well described by a Navarro-Frenk-White profile with c200 = 5.53 ± 0.77 and {r}_{s}={538}_{-100}^{+90} kpc, and we find no evidence that A1689 is overconcentrated.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dark matter distribution - Strong gravitational lensing - Galaxy clusters

Simbad objects: 111

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Number of rows : 111
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 [CBB2010b] 46b LeG 13 11 24.959 -01 20 13.98           ~ 2 0
2 [BBC2005] 17.3 LeG 13 11 24.979 -01 20 41.84           ~ 6 0
3 [BBC2005] 26.1 LeG 13 11 25.153 -01 20 32.74           ~ 4 0
4 [BBC2005] 27.1 LeG 13 11 25.173 -01 20 33.16           ~ 4 0
5 [BBC2005] 19.2 LeG 13 11 25.241 -01 20 20.05           ~ 5 0
6 [BBC2005] 21.3 LeG 13 11 25.250 -01 20 11.28           ~ 5 0
7 [CBB2010b] A1689 368 LeG 13 11 25.4470 -01 20 51.740           ~ 16 0
8 [BBC2005] 8.4 LeG 13 11 25.526 -01 20 20.01           ~ 5 0
9 [CBB2010b] 40b LeG 13 11 26.176 -01 21 03.29           ~ 2 0
10 [BBC2005] 9.4 LeG 13 11 26.279 -01 20 26.90           ~ 5 0
11 [BBC2005] 4.4 LeG 13 11 26.285 -01 20 35.40           ~ 5 0
12 [BBC2005] 1.2 LeG 13 11 26.289 -01 20 00.19           ~ 8 1
13 [CBB2010b] A1689 308 LeG 13 11 26.4410 -01 19 56.940           ~ 10 1
14 [BBC2005] 2.1 LeG 13 11 26.5410 -01 19 55.700           ~ 11 0
15 [BBC2005] 16.1 LeG 13 11 27.990 -01 20 25.29           ~ 5 0
16 [BBC2005] 10.2 LeG 13 11 28.055 -01 20 12.61           ~ 6 0
17 [BBC2005] 15.1 LeG 13 11 28.0753 -01 20 15.196           ~ 5 0
18 [BBC2005] 18.1 LeG 13 11 28.2448 -01 20 09.540           ~ 5 0
19 [BBC2005] 28.1 LeG 13 11 28.301 -01 20 10.86           ~ 5 0
20 [CBB2010b] 33a LeG 13 11 28.449 -01 21 00.66           ~ 2 0
21 [CBB2010b] 35a LeG 13 11 28.560 -01 20 59.35           ~ 2 0
22 [BBC2005] 9.3 LeG 13 11 28.737 -01 21 15.83           ~ 5 0
23 [BBC2005] 16.2 LeG 13 11 28.905 -01 20 28.53           ~ 5 0
24 [BBC2005] 14.1 LeG 13 11 29.033 -01 21 41.82           ~ 5 0
25 [BBC2005] 11.2 LeG 13 11 29.056 -01 20 01.31           ~ 7 0
26 [BBC2005] 5.1 LeG 13 11 29.064 -01 20 48.64           ~ 8 0
27 [BBC2005] 24.1 LeG 13 11 29.192 -01 20 56.22           ~ 6 0
28 [BBC2005] 5.2 LeG 13 11 29.224 -01 20 44.24           ~ 6 0
29 [BBC2005] 29.1 LeG 13 11 29.226 -01 20 58.06           ~ 5 0
30 [BBC2005] 15.3 LeG 13 11 29.239 -01 20 27.62           ~ 5 0
31 [BBC2005] 10.3 LeG 13 11 29.316 -01 20 27.99           ~ 6 0
32 [BBC2005] 18.3 LeG 13 11 29.364 -01 20 27.39           ~ 5 0
33 [CBB2010b] 35c LeG 13 11 29.431 -01 20 34.66           ~ 2 0
34 [BBC2005] 14.2 LeG 13 11 29.461 -01 21 42.73           ~ 5 0
35 [BBC2005] 11.3 LeG 13 11 29.498 -01 20 26.51           ~ 6 0
36 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
37 [BBC2005] 23.1 LeG 13 11 29.533 -01 20 10.08           ~ 5 0
38 [BBC2005] 23.2 LeG 13 11 29.558 -01 20 22.96           ~ 5 0
39 [CBB2010b] 32c LeG 13 11 29.589 -01 21 02.83           ~ 2 0
40 [BBC2005] 22.2 LeG 13 11 29.617 -01 20 23.76           ~ 5 0
41 [BBC2005] 22.1 LeG 13 11 29.694 -01 20 08.84           ~ 6 0
42 [BBC2005] 1.3 LeG 13 11 29.773 -01 21 07.43           ~ 7 1
43 [CBB2010b] 32d LeG 13 11 29.804 -01 20 43.35           ~ 2 0
44 [BBC2005] 2.4 EmG 13 11 29.812 -01 21 06.05           ~ 11 0
45 [BBC2005] 7.3 LeI 13 11 29.8204 -01 20 24.870           ~ 4 0
46 [BBC2005] 4.5 LeG 13 11 29.837 -01 20 29.45           ~ 6 0
47 [BBC2005] 1.6 LeG 13 11 29.852 -01 20 38.50           ~ 7 1
48 [BBC2005] 2.5 LeG 13 11 29.881 -01 20 39.48           ~ 7 0
49 [BBC2005] 29.2 LeG 13 11 30.022 -01 19 34.20           ~ 5 0
50 [BBC2005] 27.3 LeG 13 11 30.192 -01 20 32.94           ~ 4 0
51 [BBC2005] 26.3 LeG 13 11 30.242 -01 20 32.63           ~ 4 0
52 [CBB2010b] 40a LeG 13 11 30.260 -01 20 12.04           ~ 2 0
53 [BBC2005] 24.3 LeG 13 11 30.290 -01 19 34.21           ~ 5 0
54 [BBC2005] 9.1 LeG 13 11 30.303 -01 19 48.65           ~ 6 0
55 [BBC2005] 17.2 LeG 13 11 30.392 -01 20 27.83           ~ 5 0
56 [BBC2005] 4.2 LeG 13 11 30.528 -01 21 12.02           ~ 8 0
57 [BBC2005] 17.1 LeG 13 11 30.662 -01 20 24.87           ~ 6 0
58 [BBC2005] 7.2 LeG 13 11 30.678 -01 20 13.99           ~ 6 0
59 [BBC2005] 6.1 LeG 13 11 30.755 -01 19 38.19           ~ 6 0
60 [BBC2005] 4.3 LeG 13 11 30.758 -01 20 08.25           ~ 5 0
61 [BBC2005] 21.2 LeG 13 11 30.819 -01 20 44.91           ~ 5 0
62 [CBB2010b] 50b LeG 13 11 31.021 -01 21 09.08           ~ 3 0
63 [BBC2005] 21.1 LeG 13 11 31.027 -01 20 45.82           ~ 5 0
64 [BBC2005] 26.2 LeG 13 11 31.326 -01 20 25.28           ~ 5 0
65 [BBC2005] 27.2 LeG 13 11 31.369 -01 20 24.64           ~ 4 0
66 [BBC2005] 8.2 LeG 13 11 31.402 -01 21 05.63           ~ 6 0
67 [BBC2005] 8.3 LeG 13 11 31.495 -01 20 14.10           ~ 5 0
68 [CBB2010b] 36a LeG 13 11 31.566 -01 19 45.94           ~ 2 0
69 [BBC2005] 19.1 LeG 13 11 31.634 -01 20 22.64           ~ 5 0
70 [CBB2010b] 50c LeG 13 11 31.660 -01 20 13.66           ~ 3 0
71 [CBB2010b] 46a LeG 13 11 31.669 -01 20 47.19           ~ 2 0
72 [CBB2010b] 36b LeG 13 11 31.686 -01 19 47.39           ~ 2 0
73 [BBC2005] 3.3 LeG 13 11 31.703 -01 20 55.99           ~ 5 0
74 [BBC2005] 1.5 LeG 13 11 31.932 -01 20 05.91           ~ 6 1
75 [BBC2005] 19.3 LeG 13 11 31.958 -01 20 59.38           ~ 5 0
76 [BBC2005] 2.3 LeG 13 11 31.978 -01 20 07.17           ~ 8 0
77 [BBC2005] 19.4 LeG 13 11 32.040 -01 20 57.47           ~ 5 0
78 [BBC2005] 3.1 LeG 13 11 32.041 -01 20 27.27           ~ 5 0
79 [BBC2005] 24.2 LeG 13 11 32.059 -01 19 50.56           ~ 6 0
80 [BBC2005] 4.1 LeG 13 11 32.175 -01 20 57.37           ~ 10 0
81 [BBC2005] 29.3 LeG 13 11 32.177 -01 19 52.89           ~ 6 0
82 [BBC2005] 3.2 LeG 13 11 32.178 -01 20 33.37           ~ 5 0
83 [CBB2010b] 32a LeG 13 11 32.191 -01 20 03.53           ~ 2 0
84 [BBC2005] 8.1 LeG 13 11 32.302 -01 20 51.09           ~ 6 0
85 [BBC2005] 22.3 LeG 13 11 32.420 -01 21 15.94           ~ 12 0
86 [BBC2005] 30.1 LeG 13 11 32.420 -01 19 19.80           ~ 5 0
87 [BBC2005] 6.4 LeG 13 11 32.478 -01 19 58.81           ~ 5 0
88 [CBB2010b] 50a LeG 13 11 32.580 -01 20 43.60           ~ 3 0
89 [BBC2005] 23.3 LeG 13 11 32.662 -01 21 15.26           ~ 5 0
90 [BBC2005] 6.3 LeG 13 11 32.742 -01 19 54.49           ~ 5 0
91 [BBC2005] 13.1 LeG 13 11 32.828 -01 19 24.44           ~ 5 0
92 [BBC2005] 2.2 LeG 13 11 32.969 -01 20 25.51           ~ 8 0
93 [BBC2005] 13.2 LeG 13 11 32.986 -01 19 25.83           ~ 5 0
94 [CBB2010b] A1689 307 LeG 13 11 33.0650 -01 20 27.450           ~ 6 1
95 [BBC2005] 30.2 LeG 13 11 33.185 -01 19 26.07           ~ 5 0
96 [CBB2010b] 32b LeG 13 11 33.216 -01 20 20.90           ~ 2 0
97 [BBC2005] 6.2 LeG 13 11 33.345 -01 20 12.20           ~ 6 0
98 [BBC2005] 11.1 LeG 13 11 33.349 -01 21 06.73           ~ 7 0
99 [BBC2005] 13.3 LeG 13 11 33.398 -01 19 31.27           ~ 5 0
100 [BBC2005] 9.2 LeG 13 11 33.519 -01 20 50.42           ~ 5 0
101 [BBC2005] 29.4 LeG 13 11 33.626 -01 20 20.64           ~ 5 0
102 [BBC2005] 30.3 LeG 13 11 33.662 -01 19 32.73           ~ 5 0
103 [BBC2005] 24.4 LeG 13 11 33.719 -01 20 19.91           ~ 5 0
104 [BBC2005] 18.2 LeG 13 11 33.8200 -01 20 54.539           ~ 5 0
105 [CBB2010b] 35b LeG 13 11 33.958 -01 20 32.52           ~ 2 0
106 [CBB2010b] A1689 306 LeG 13 11 33.9810 -01 20 50.950           ~ 6 0
107 [BBC2005] 15.2 LeG 13 11 34.0756 -01 20 51.311           ~ 5 0
108 [CBB2010b] 5c LeG 13 11 34.120 -01 20 20.96           ~ 8 0
109 [BBC2005] 28.2 LeG 13 11 34.262 -01 21 00.01           ~ 5 0
110 [BBC2005] 16.3 LeG 13 11 34.400 -01 20 46.40           ~ 5 0
111 [BBC2005] 25.2 LeG 13 11 34.6484 -01 20 33.581           ~ 4 0

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