2015MNRAS.452.3905A

Query : 2015MNRAS.452.3905A

2015MNRAS.452.3905A - Mon. Not. R. Astron. Soc., 452, 3905-3923 (2015/October-1)

Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra.

ANDERSON M.E., CHURAZOV E. and BREGMAN J.N.

Abstract (from CDS):

We conduct a comprehensive search for X-ray emission lines from sterile neutrino dark matter, motivated by recent claims of unidentified emission lines in the stacked X-ray spectra of galaxy clusters and the centres of the Milky Way and M31. Since the claimed emission lines lie around 3.5 keV, we focus on galaxies and galaxy groups (masking the central regions), since these objects emit very little radiation above ∼ 2 keV and offer a clean background against which to detect emission lines. We develop a formalism for maximizing the signal-to-noise of decaying dark matter emission lines by weighing each X-ray event according to the expected dark matter profile. In total, we examine 81 and 89 galaxies with Chandra and XMM-Newton, respectively, totalling 15.0 and 14.6 Ms of integration time. We find no significant evidence of any emission lines, placing strong constraints on the mixing angle of sterile neutrinos with masses between 4.8 and 12.4 keV. In particular, if the 3.57 keV feature from Bulbul et al. were due to 7.1 keV sterile neutrino emission, we would have detected it at 4.4σ and 11.8σ in our two samples. The most conservative estimates of the systematic uncertainties reduce these constraints to 4.4σ and 7.8σ, or letting the line energy vary between 3.50 and 3.60 keV reduces these constraints to 2.7σ and 11.0σ, respectively. Unlike previous constraints, our measurements do not depend on the model of the X-ray background or on the assumed logarithmic slope of the centre of the dark matter profile.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): neutrinos - galaxies: haloes - dark matter - diffuse radiation - X-rays: galaxies

Simbad objects: 133

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Number of rows : 133
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 NGC 45 Sy2 00 14 04.0072128696 -23 10 55.132646808 11.92 11.21 10.73 10.58 10.4 ~ 269 1
2 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
4 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 480 2
5 NGC 278 H2G 00 52 04.3452013728 +47 33 01.675026036   10.5       ~ 244 1
6 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
7 NGC 474 GiP 01 20 06.6870520512 +03 24 55.861973100 12.75 12.37 11.51 11.42 10.56 ~ 371 1
8 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
9 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
10 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
11 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
12 NGC 1023 AG? 02 40 24.0133575864 +39 03 47.663392896 10.91 10.35 9.35 7.83   ~ 689 2
13 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
14 NGC 1209 EmG 03 06 03.020 -15 36 40.58   12   11.42   ~ 153 0
15 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
16 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
17 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
18 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
19 NGC 1386 Sy1 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 553 1
20 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 289 0
21 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
22 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
23 NGC 1493 Sy2 03 57 27.4270810416 -46 12 38.513195316   11.88   11.01 11.6 ~ 149 0
24 NGC 1521 GiG 04 08 18.9110259504 -21 03 07.337782908   12.31   10.73   ~ 122 0
25 NVSS J041911+555245 rG 04 19 11.8616039088 +55 52 43.283517456           ~ 16 1
26 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
27 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
28 NGC 1637 Sy2 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 444 0
29 NGC 1961 LIN 05 42 04.6327819680 +69 22 42.411028872   11.73 10.99     ~ 362 3
30 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 712 1
31 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
32 NGC 2325 rG 07 02 40.40266151 -28 41 50.0483640   12.17   10.46   ~ 117 1
33 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
34 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
35 NGC 2681 LIN 08 53 32.7183058512 +51 18 49.159212120 11.40 11.09 10.29     ~ 332 1
36 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 526 2
37 NGC 2798 GiG 09 17 22.95407 +41 59 58.9560 13.03 13.04 12.32     ~ 338 3
38 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
39 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 951 3
40 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
41 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
42 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
43 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
44 NGC 3227 Sy1 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1807 2
45 NGC 3312 LIN 10 37 02.5165552728 -27 33 53.924090760   12.63 13.96     ~ 122 0
46 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 809 1
47 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
48 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1638 0
49 M 108 AGN 11 11 30.967 +55 40 26.84   10.70       ~ 497 1
50 NGC 3585 GiG 11 13 17.109 -26 45 17.96   10.64   9.22   ~ 304 0
51 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
52 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
53 NGC 3631 AG? 11 21 02.8871865144 +53 10 10.415331660   11.0       ~ 385 1
54 NGC 3683 H2G 11 27 31.890 +56 52 36.15   12.7       ~ 197 0
55 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
56 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 347 0
57 NGC 3898 LIN 11 49 15.370 +56 05 03.66   11.7       ~ 329 1
58 NGC 3923 GiG 11 51 01.783 -28 48 22.36 11.41 10.59 9.80 8.88   ~ 459 1
59 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 447 1
60 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
61 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
62 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
63 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
64 NGC 4157 GiC 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 373 2
65 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 324 2
66 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 582 1
67 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
68 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
69 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
70 NGC 4291 GiG 12 20 17.699 +75 22 15.47   17.0       ~ 321 1
71 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
72 NGC 4414 GiC 12 26 27.1276893168 +31 13 24.626206488 11.12 10.96 10.12     ~ 593 2
73 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
74 NGC 4477 Sy2 12 30 02.1955766304 +13 38 11.543715888 11.98 11.38 10.42     ~ 419 2
75 NGC 4490 GiG 12 30 34.5 +41 38 26 10.03 10.22 9.79     ~ 616 3
76 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
77 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 532 1
78 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
79 M 90 Sy2 12 36 49.8009839880 +13 09 46.523813040 10.56 10.26 9.54     ~ 953 1
80 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1179 0
81 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
82 NGC 4618 GiP 12 41 32.8976471760 +41 09 03.185175528 11.03 11.22 10.78     ~ 344 2
83 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
84 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
85 NGC 4668 EmG 12 45 31.941 -00 32 02.36   13.5   12.714   ~ 138 0
86 NGC 4697 GiG 12 48 35.8981498824 -05 48 02.482374564   10.97   9.83   ~ 895 0
87 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
88 NGC 4782 rG 12 54 35.698 -12 34 06.92   13 12.75 13.11   ~ 158 2
89 IC 3961 GiP 12 59 00.2 +34 50 39   14.1       ~ 39 0
90 NGC 5018 GiP 13 13 01.0452720960 -19 31 05.649751992   11.71   10.31   ~ 335 1
91 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
92 NGC 5073 Sy2 13 19 20.6629199856 -14 50 40.937423928   13.46   12.19   ~ 102 0
93 NGC 5087 Sy2 13 20 24.9671751960 -20 36 39.392008020   11.96 12.08 10.41   ~ 104 0
94 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
95 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
96 IC 4329 BiC 13 49 05.314 -30 17 45.20   11.96 11.54 10.31   ~ 192 2
97 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
98 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
99 NGC 5506 Bla 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1173 1
100 NGC 5529 GiP 14 15 34.226 +36 13 37.12   12.9       ~ 164 2
101 NGC 5643 Sy2 14 32 40.778 -44 10 28.60   11.03 13.60 9.92 10.6 ~ 652 1
102 NGC 5746 GiP 14 44 56.005 +01 57 17.06   12.3       ~ 375 0
103 MCG-02-38-016 GiP 14 49 30.685 -10 10 33.83   10.9   9.9   ~ 35 1
104 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
105 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
106 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
107 NGC 5879 AGN 15 09 46.7271710112 +57 00 00.538947900   11.9       ~ 262 0
108 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0
109 NGC 6217 AGN 16 32 39.2100852960 +78 11 53.487076092   14.37 13.88     ~ 320 0
110 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 478 1
111 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
112 NGC 6482 GiG 17 51 48.8339247888 +23 04 18.889271112 12.71 12.35 11.45     ~ 220 1
113 NGC 6643 AG? 18 19 46.370 +74 34 06.23   11.80       ~ 320 1
114 IC 4765 rG 18 47 18.150 -63 19 52.14   12.33 11.36 10.53 10.75 ~ 88 2
115 NGC 6753 Sy2 19 11 23.635 -57 02 58.44   11.84 11.04 10.31 11.0 ~ 177 1
116 NGC 6861 EmG 20 07 19.482 -48 22 12.94   12.01 11.10 10.43   ~ 211 0
117 NGC 6868 Sy2 20 09 54.08207 -48 22 46.2470   11.58 9.22 10.01 7.91 ~ 239 2
118 NGC 6876 GiG 20 18 19.146 -70 51 31.80   11.76 11.54 10.45   ~ 130 0
119 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
120 NGC 7090 EmG 21 36 28.865 -54 33 26.35 12.35 11.60 11.05 10.82 11.2 ~ 183 0
121 NGC 7176 GiP 22 02 08.4333223632 -31 59 23.446700592   12.08   10.59   ~ 131 0
122 NGC 7213 Bla 22 09 16.2100443720 -47 10 00.115999716   10.97 12.08 10.50 10.6 ~ 700 1
123 MCG-05-52-070 GiP 22 23.3 -28 59   14.53   13.83   ~ 55 0
124 NGC 7320 GiG 22 36 03.4059680280 +33 56 53.623460220 13.12 13.23 12.63 12.38   ~ 204 3
125 IC 5264 Sy2 22 56 53.035 -36 33 14.91   13.46   12.02   ~ 79 1
126 IC 5267 Sy2 22 57 13.572 -43 23 46.11   11.18 10.47 9.83 10.4 ~ 151 0
127 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
128 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3
129 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0
130 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
131 IC 5332 GiG 23 34 27.488 -36 06 03.89 11.59 11.27 10.72 10.50 11.2 ~ 216 0
132 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
133 NGC 7796 Sy1 23 58 59.7964010520 -55 27 29.983148100   12.36 11.30 10.82   ~ 121 0

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