2015A&A...581A.126S

Query : 2015A&A...581A.126S

2015A&A...581A.126S - Astronomy and Astrophysics, volume 581A126-126 (2015/9-1)

The denoised, deconvolved, and decomposed Fermi γ-ray sky. An application of the D3PO algorithm.

SELIG M., VACCA V., OPPERMANN N. and ENSSLIN T.A.

Abstract (from CDS):

We analyze the 6.5 year all-sky data from the Fermi Large Area Telescope that are restricted to γ-ray photons with energies between 0.6-307.2 GeV. Raw count maps show a superposition of diffuse and point-like emission structures and are subject to shot noise and instrumental artifacts. Using the D3PO inference algorithm, we modeled the observed photon counts as the sum of a diffuse and a point-like photon flux, convolved with the instrumental beam and subject to Poissonian shot noise. The D3PO algorithm performs a Bayesian inference without the use of spatial or spectral templates; that is, it removes the shot noise, deconvolves the instrumental response, and yields separate estimates for the two flux components. The non-parametric reconstruction uncovers the morphology of the diffuse photon flux up to several hundred GeV. We present an all-sky spectral index map for the diffuse component. We show that the diffuse γ-ray flux can be described phenomenologically by only two distinct components: a soft component, presumably dominated by hadronic processes, tracing the dense, cold interstellar medium, and a hard component, presumably dominated by leptonic interactions, following the hot and dilute medium and outflows such as the Fermi bubbles. A comparison of the soft component with the Galactic dust emission indicates that the dust-to-soft-gamma ratio in the interstellar medium decreases with latitude. The spectrally hard component exists in a thick Galactic disk and tends to flow out of the Galaxy at some locations. Furthermore, we find the angular power spectrum of the diffuse flux to roughly follow a power law with an index of 2.47 on large scales, independent of energy. Our first catalog of source candidates includes 3106 candidates of which we associate 1381 (1897) with known sources from the second (third) Fermi source catalog. We observe γ-ray emission in the direction of a few galaxy clusters hosting known radio halos.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - methods: statistical - techniques: image processing - gamma rays: general - catalogs gamma rays: diffuse background

VizieR on-line data: <Available at CDS (J/A+A/581/A126): catalog.dat list.dat fits/*>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 145

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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 PSR J0007+7303 Psr 00 07 00.6000137 +73 03 06.849976           ~ 183 1
2 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 156 0
3 ACO 11 ClG 00 12 44 -16 26.3           ~ 23 0
4 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
5 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
6 ACO 19 ClG 00 18 51 -06 11.3           ~ 8 0
7 ACO 26 ClG 00 23 20 +36 50.6           ~ 6 0
8 ACO 74 ClG 00 38 53 -22 18.5           ~ 41 0
9 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
10 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
11 ACO 114 ClG 00 53 39 -21 40.7           ~ 67 0
12 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
13 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
14 ACO 139 ClG 01 05 23 +36 23.1           ~ 6 0
15 ZwCl 0104+5350 ClG 01 07 43.2 +54 08 43           ~ 35 0
16 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 160 2
17 BWE 0116+1107 GrG 01 19 01.32 +11 23 23.2           ~ 18 3
18 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
19 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
20 ClG 0217+70 ClG 02 17 00.0 +70 36 00           ~ 40 0
21 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
22 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 408 3
23 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
24 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
25 IC 310 AGN 03 16 42.9787569912 +41 19 29.615579544   14.3       ~ 311 2
26 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
27 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
28 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
29 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
30 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
31 2MASX J03411752+1523477 BiC 03 41 17.5329189192 +15 23 47.567775336   17.5       ~ 46 1
32 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
33 ACO S 405 ClG 03 51 32.8 -82 13 15           ~ 50 0
34 PSR J0357+32 Psr 03 57 52.161 +32 05 23.63           ~ 104 0
35 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
36 NGC 1550 BiC 04 19 37.9450450152 +02 24 35.918168940   14.0       ~ 183 1
37 ClG 0422-09 ClG 04 25 51.02 -08 33 38.5           ~ 97 0
38 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
39 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
40 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 273 2
41 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
42 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
43 ACO 523 ClG 04 59 01 +08 46.5           ~ 66 0
44 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
45 ACO 545 ClG 05 32 24.4152 -11 32 35.080           ~ 102 0
46 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
47 ACO S 540 ClG 05 40 06.2 -40 50 29           ~ 60 0
48 NAME Gal Anticenter reg 05 46 +28.9           ~ 1024 0
49 ACO 548 ClG 05 47 01.7 -25 36 59           B8 209 2
50 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
51 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
52 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0
53 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
54 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
55 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 312 1
56 Z 262-19 BiC 07 40 58.2309667896 +55 25 37.870473828   14.2       ~ 52 1
57 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
58 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
59 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
60 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
61 ACO 746 ClG 09 09 34.7638 +51 32 56.134           ~ 55 0
62 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
63 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
64 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
65 ACO 851 ClG 09 43 01.2 +46 59 54   18.9       ~ 334 0
66 ClG J0947+7623 ClG 09 46 59.916 +76 23 43.99           ~ 165 0
67 NVSS J094712+762312 Rad 09 47 12.37 +76 23 09.3           ~ 151 1
68 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
69 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 248 0
70 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
71 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
72 ACO 1213 ClG 11 16 26.98 +29 16 23.9           ~ 155 0
73 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
74 ACO 1351 ClG 11 42 24.7795 +58 32 05.558           ~ 90 0
75 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
76 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
77 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
78 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
79 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
80 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
81 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
82 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
83 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
84 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 118 0
85 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
86 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
87 MCXC J1332.7+5032 ClG 13 32 44.8 +50 32 24           ~ 134 0
88 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
89 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
90 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
91 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
92 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
93 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
94 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 140 0
95 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
96 NAME Loop I SR? 15 01 -38.7           ~ 414 2
97 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 186 0
98 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
99 ACO 2034 ClG 15 10 03.9 +33 30 57           ~ 248 1
100 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
101 2MASX J15150305-1521537 ClG 15 14.9 -15 23           ~ 57 0
102 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
103 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
104 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
105 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2
106 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
107 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
108 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
109 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
110 BAX 249.5848-64.5165 ClG 16 38 13.2 -64 21 21           ~ 123 0
111 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
112 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
113 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
114 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
115 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
116 ACO 2254 ClG 17 17 45.90 +19 40 22.8           ~ 79 0
117 ACO 2294 ClG 17 24 10.1 +85 53 09           ~ 69 0
118 ZwCl 1742+3306 ClG 17 44 16.2753 +32 59 55.115           ~ 93 0
119 NAME Fermi Bubbles bub 17 45 -29.0           ~ 525 0
120 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
121 W 30 SNR 18 05 31.2011719 -21 25 48.001099           ~ 188 1
122 PSR J1836+5925 Psr 18 36 13.661 +59 25 29.77           ~ 153 0
123 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
124 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
125 SNR G049.1-00.1 SNR 19 23 19.300 +14 09 21.00           ~ 309 0
126 ACT-CL J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 63 0
127 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
128 Z 375-15 BiC 21 13 55.918 +02 33 55.39   15.1       ~ 67 1
129 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
130 ACO 3822 ClG 21 54 06.2 -57 50 49           ~ 98 0
131 ACO 3827 ClG 22 01 49.1 -59 57 15           ~ 178 0
132 CIZA J2242.8+5301 ClG 22 42 53.0 +53 01 05           ~ 228 0
133 ACO 3921 ClG 22 49 59.0 -64 25 48           ~ 165 1
134 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
135 BAX 349.3187+18.7197 ClG 23 17 11.184 +18 41 48.87           ~ 97 0
136 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 327 1
137 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
138 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 265 0
139 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
140 ACT-CL J2344.3-0422 ClG 23 44 15.98 -04 22 24.5           ~ 53 0
141 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 280 3
142 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
143 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1
144 NAME Galactic Ridge ? ~ ~           ~ 543 1
145 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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