Swift-XRT Survey of Fermi Unassociated Sources


These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.


Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

3FGL J2039.6-5618

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2039.6-5618 Swift-XRT detections in the field for 3FGL J2039.6-5618

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 39 57.40 -56 07 43.16 3.65 (7.1 ± 0.3) x 10-3 516 20.800 20.700
2 20 40 02.42 -56 27 42.07 3.83 (2.6 ± 0.2) x 10-3 183 10.960 11.290
3 20 39 34.40 -56 17 06.44 3.84 (1.9 ± 0.2) x 10-3 191 9.261 9.323
4 20 39 22.15 -56 19 45.42 3.82 (1.2 ± 0.2) x 10-3 148 7.087 6.991
5 20 39 04.22 -56 12 21.28 3.89 (9 ± 2) x 10-4 103 6.334 6.070
6 20 39 48.25 -56 10 21.93 3.87 (9 ± 2) x 10-4 99 6.200 6.030
7 20 40 31.42 -56 19 52.49 3.92 (8.1 ± 1.4) x 10-4 108 6.163 5.901
8 20 39 11.90 -56 11 42.82 3.90 (8 ± 2) x 10-4 105 6.568 5.700
9 20 39 25.62 -56 24 06.26 3.89 (7.8 ± 1.4) x 10-4 119 5.440 5.665
10 20 39 15.84 -56 17 16.36 3.89 (7.7 ± 1.4) x 10-4 151 5.232 5.406
11 20 40 27.33 -56 22 05.51 4.00 (6.4 ± 1.2) x 10-4 84 5.153 5.146
12 20 39 50.48 -56 17 57.55 3.98 (6.5 ± 1.3) x 10-4 125 4.568 4.816
13 20 40 26.29 -56 08 21.13 4.13 (5.2 ± 1.1) x 10-4 59 4.843 4.709
14 20 38 21.42 -56 16 52.11 3.97 (5.1 ± 1.2) x 10-4 66 4.827 4.358
15 20 39 45.52 -56 09 23.32 3.88 (6.0 ± 1.4) x 10-4 83 5.255 4.336
16 20 39 48.92 -56 12 09.95 3.93 (5.3 ± 1.2) x 10-4 95 4.481 4.315
17 20 40 45.15 -56 14 44.94 3.99 (4.4 ± 1.1) x 10-4 71 4.582 3.939
18 20 40 10.34 -56 21 35.76 4.02 (4.4 ± 1.1) x 10-4 94 3.945 3.916
19 20 38 26.58 -56 14 49.55 3.71 (5.1 ± 1.4) x 10-4 178 6.808 3.737
20 20 39 31.05 -56 23 20.14 3.88 (4.3 ± 1.3) x 10-4 98 3.674 3.443
21 20 40 16.88 -56 16 15.33 3.99 (3.9 ± 1.2) x 10-4 90 3.195 3.373
22 20 38 31.05 -56 22 26.91 3.88 (3.6 ± 1.1) x 10-4 88 4.051 3.279
23 20 38 41.44 -56 21 40.91 3.82 (3.8 ± 1.2) x 10-4 113 4.731 3.253

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 39 24.89 -56 19 54.11 3.82 (7 ± 2) x 10-4 201 5.355 4.840
2 20 39 15.84 -56 17 16.36 3.89 (6.7 ± 1.4) x 10-4 151 5.331 4.712
3 20 39 22.17 -56 19 30.46 3.82 (5.3 ± 1.4) x 10-4 169 4.242 3.775
4 20 40 23.62 -56 13 10.44 4.05 (2.9 ± 1.0) x 10-4 65 3.490 2.969
5 20 39 24.02 -56 28 43.65 3.82 (3.4 ± 1.2) x 10-4 108 3.926 2.941
6 20 39 24.89 -56 19 54.11 3.82 (3.3 ± 1.2) x 10-4 201 3.980 2.813
7 20 39 32.71 -56 28 58.01 3.85 (3.2 ± 1.1) x 10-4 106 3.988 2.798
8 20 39 23.44 -56 28 42.15 3.82 (3.2 ± 1.1) x 10-4 112 3.963 2.773
9 20 38 26.63 -56 14 46.59 3.71 (3.7 ± 1.4) x 10-4 179 4.399 2.678
10 20 38 56.50 -56 27 13.05 3.87 (2.9 ± 1.1) x 10-4 74 2.944 2.668
11 20 38 52.86 -56 25 29.47 3.80 (2.8 ± 1.1) x 10-4 105 3.607 2.563
12 20 39 33.25 -56 29 00.77 3.84 (2.7 ± 1.0) x 10-4 95 3.454 2.539
13 20 38 40.63 -56 23 45.24 3.83 (2.7 ± 1.1) x 10-4 93 3.478 2.517
14 20 38 56.99 -56 27 10.47 3.86 (2.8 ± 1.1) x 10-4 76 2.880 2.507
15 20 38 26.58 -56 14 49.35 3.71 (3.2 ± 1.3) x 10-4 178 4.640 2.403
16 20 39 40.98 -56 28 35.86 3.85 (2.9 ± 1.2) x 10-4 73 3.888 2.398
17 20 38 33.77 -56 12 40.60 3.91 (2.8 ± 1.2) x 10-4 59 3.819 2.365
18 20 39 21.03 -56 28 31.08 3.81 (2.9 ± 1.2) x 10-4 122 3.370 2.339
19 20 38 24.97 -56 21 38.54 3.94 (2.1 ± 0.9) x 10-4 53 2.804 2.268
20 20 38 34.57 -56 21 10.27 3.82 (2.5 ± 1.1) x 10-4 79 2.968 2.232
21 20 39 20.73 -56 28 29.72 3.81 (2.7 ± 1.2) x 10-4 118 3.689 2.230
22 20 39 32.68 -56 28 58.11 3.85 (2.6 ± 1.2) x 10-4 106 3.328 2.126
23 20 38 26.59 -56 14 49.37 3.71 (2.7 ± 1.3) x 10-4 184 4.053 2.065
24 20 38 31.05 -56 22 26.91 3.88 (2.2 ± 1.1) x 10-4 91 2.865 2.020
25 20 40 48.22 -56 15 31.23 4.03 (1.6 ± 0.8) x 10-4 60 2.803 1.965
26 20 39 16.11 -56 28 10.91 3.81 (2.2 ± 1.1) x 10-4 110 2.986 1.924
27 20 38 54.50 -56 25 41.00 3.80 (2.2 ± 1.1) x 10-4 113 3.980 1.904
28 20 39 09.18 -56 07 49.98 3.99 (1.6 ± 0.9) x 10-4 54 2.773 1.801
29 20 38 26.63 -56 14 53.19 3.71 (1.9 ± 1.1) x 10-4 168 3.457 1.700
30 20 38 26.63 -56 14 46.50 3.71 (1.4 ± 1.1) x 10-4 174 3.844 1.336
31 20 38 52.90 -56 25 26.81 3.81 (1.3 ± 1.0) x 10-4 103 3.218 1.230

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2039.6-5618 Swift-XRT image with known radio, optical and UV sources for 3FGL J2039.6-5618

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J203946.8-561835 20 39 46.90 -56 18 36.00 0.92 XMM-NEWTON
2 3XMM J203948.8-561902 20 39 48.89 -56 19 02.64 1.23 XMM-NEWTON
3 3XMM J203950.9-561756 20 39 50.90 -56 17 56.04 1.67 XMM-NEWTON
4 3XMM J203935.0-561710 20 39 34.99 -56 17 09.96 1.72 XMM-NEWTON
5 3XMM J203929.1-561955 20 39 29.14 -56 19 55.56 1.96 XMM-NEWTON
3XMM J203929.7-562021 20 39 29.76 -56 20 21.12 2.19 XMM-NEWTON
6 3XMM J203944.3-561635 20 39 44.40 -56 16 35.76 2.20 XMM-NEWTON
7 3XMM J203922.1-561855 20 39 22.10 -56 18 55.44 2.53 XMM-NEWTON
8 3XMM J203958.6-561834 20 39 58.63 -56 18 34.92 2.54 XMM-NEWTON
9 3XMM J203922.4-561946 20 39 22.49 -56 19 46.56 2.68 XMM-NEWTON
10 3XMM J203939.8-562131 20 39 39.86 -56 21 31.68 2.80 XMM-NEWTON
11 3XMM J204000.4-561806 20 40 00.46 -56 18 06.48 2.86 XMM-NEWTON
12 3XMM J203957.6-562029 20 39 57.70 -56 20 29.04 2.98 XMM-NEWTON
3XMM J203959.9-562009 20 39 59.95 -56 20 09.60 3.08 XMM-NEWTON
13 3XMM J203927.6-561542 20 39 27.62 -56 15 42.48 3.49 XMM-NEWTON
14 3XMM J203916.2-561741 20 39 16.27 -56 17 41.28 3.49 XMM-NEWTON
15 3XMM J203922.1-562114 20 39 22.13 -56 21 14.76 3.57 XMM-NEWTON
16 3XMM J203916.0-561701 20 39 16.49 -56 17 01.32 3.77 XMM-NEWTON
17 3XMM J203951.6-561509 20 39 51.70 -56 15 09.72 3.90 XMM-NEWTON
18 3XMM J203915.9-562105 20 39 15.96 -56 21 05.04 4.12 XMM-NEWTON
19 3XMM J204010.4-561937 20 40 10.44 -56 19 37.56 4.27 XMM-NEWTON
20 3XMM J204011.5-561905 20 40 11.54 -56 19 05.88 4.35 XMM-NEWTON
21 3XMM J203931.5-562316 20 39 31.58 -56 23 16.08 4.70 XMM-NEWTON
22 3XMM J203906.0-561759 20 39 06.70 -56 17 59.28 4.81 XMM-NEWTON
23 3XMM J203913.8-561531 20 39 13.90 -56 15 31.32 4.87 XMM-NEWTON
24 3XMM J204008.9-562144 20 40 08.98 -56 21 44.64 4.99 XMM-NEWTON
25 3XMM J203958.8-561426 20 39 58.87 -56 14 26.52 5.00 XMM-NEWTON
26 3XMM J203905.4-562040 20 39 05.50 -56 20 40.56 5.21 XMM-NEWTON
27 3XMM J203918.8-561427 20 39 18.84 -56 14 27.24 5.21 XMM-NEWTON
28 3XMM J204016.5-561626 20 40 16.58 -56 16 27.12 5.52 XMM-NEWTON
29 3XMM J203900.1-561722 20 39 00.14 -56 17 22.92 5.73 XMM-NEWTON
30 3XMM J203916.9-561354 20 39 16.99 -56 13 54.84 5.80 XMM-NEWTON
31 3XMM J203926.3-562412 20 39 26.40 -56 24 12.60 5.81 XMM-NEWTON
32 3XMM J203944.0-562446 20 39 44.21 -56 24 46.44 6.07 XMM-NEWTON
33 3XMM J203940.0-561236 20 39 40.20 -56 12 36.72 6.12 XMM-NEWTON
34 1RXS J203900.1-562138 20 39 00.10 -56 21 38.16 6.29 ROSAT
35 3XMM J203914.5-562355 20 39 14.50 -56 23 55.68 6.31 XMM-NEWTON
36 3XMM J203948.4-561220 20 39 48.43 -56 12 20.88 6.48 XMM-NEWTON
2RXS J203856.8-562130 20 38 56.83 -56 21 30.60 6.64 ROSAT
2RXS J203856.8-562130 20 38 56.83 -56 21 30.60 6.64 ROSAT
37 3XMM J204017.4-561424 20 40 17.47 -56 14 24.00 6.73 XMM-NEWTON
38 3XMM J203910.5-562421 20 39 10.51 -56 24 21.96 6.99 XMM-NEWTON
39 3XMM J203951.1-561148 20 39 51.19 -56 11 48.12 7.09 XMM-NEWTON
40 3XMM J203848.6-561740 20 38 48.65 -56 17 40.92 7.24 XMM-NEWTON
41 3XMM J204023.1-562253 20 40 23.11 -56 22 53.76 7.25 XMM-NEWTON
42 3XMM J204031.9-561956 20 40 31.94 -56 19 56.28 7.26 XMM-NEWTON
43 3XMM J204031.0-562036 20 40 31.80 -56 20 36.96 7.28 XMM-NEWTON
44 3XMM J204028.3-562208 20 40 28.39 -56 22 08.76 7.49 XMM-NEWTON
45 3XMM J203924.7-561131 20 39 24.74 -56 11 31.92 7.51 XMM-NEWTON
46 3XMM J204016.4-562422 20 40 16.42 -56 24 22.32 7.54 XMM-NEWTON
47 3XMM J204034.2-561616 20 40 34.25 -56 16 15.96 7.87 XMM-NEWTON
48 3XMM J203957.5-561112 20 39 57.50 -56 11 12.84 7.88 XMM-NEWTON
49 3XMM J203843.3-561920 20 38 43.39 -56 19 20.64 7.92 XMM-NEWTON
50 3XMM J203912.5-561147 20 39 12.50 -56 11 47.76 7.93 XMM-NEWTON
51 3XMM J204038.3-561753 20 40 38.35 -56 17 53.16 8.09 XMM-NEWTON
52 3XMM J203904.1-561221 20 39 04.18 -56 12 21.24 8.11 XMM-NEWTON
53 3XMM J203921.8-562631 20 39 21.84 -56 26 31.92 8.21 XMM-NEWTON
54 3XMM J204024.5-561307 20 40 24.55 -56 13 06.96 8.31 XMM-NEWTON
55 3XMM J203948.4-561026 20 39 48.41 -56 10 26.40 8.36 XMM-NEWTON
56 3XMM J204018.7-561212 20 40 18.77 -56 12 12.96 8.42 XMM-NEWTON
57 3XMM J203842.0-562138 20 38 42.91 -56 21 38.88 8.58 XMM-NEWTON
58 3XMM J203955.2-561011 20 39 55.27 -56 10 11.64 8.78 XMM-NEWTON
59 3XMM J204036.9-562253 20 40 37.01 -56 22 53.76 8.89 XMM-NEWTON
60 3XMM J203922.1-562715 20 39 22.15 -56 27 15.84 8.90 XMM-NEWTON
61 3XMM J203955.0-562723 20 39 55.10 -56 27 23.76 8.91 XMM-NEWTON
62 3XMM J204015.8-562611 20 40 15.89 -56 26 11.76 8.95 XMM-NEWTON
63 3XMM J204019.2-561131 20 40 19.30 -56 11 31.92 9.00 XMM-NEWTON
64 3XMM J203935.5-562748 20 39 35.59 -56 27 48.60 9.11 XMM-NEWTON
65 3XMM J204036.6-562337 20 40 36.67 -56 23 37.32 9.21 XMM-NEWTON
66 3XMM J203945.2-560925 20 39 45.24 -56 09 25.56 9.33 XMM-NEWTON
67 3XMM J203939.0-560923 20 39 39.10 -56 09 23.76 9.33 XMM-NEWTON
68 3XMM J204042.7-561506 20 40 42.72 -56 15 06.12 9.39 XMM-NEWTON
69 3XMM J203902.2-562630 20 39 02.21 -56 26 30.48 9.40 XMM-NEWTON
70 3XMM J204045.6-561604 20 40 45.67 -56 16 04.08 9.45 XMM-NEWTON
71 3XMM J203954.5-562759 20 39 54.58 -56 27 59.04 9.47 XMM-NEWTON
SWIFT J204002.5-562742 20 40 02.54 -56 27 42.84 9.50 SWIFT
72 3XMM J204002.8-562743 20 40 02.86 -56 27 43.92 9.53 XMM-NEWTON
73 3XMM J203942.5-560903 20 39 42.58 -56 09 03.60 9.67 XMM-NEWTON
74 3XMM J203831.8-561644 20 38 31.82 -56 16 44.76 9.71 XMM-NEWTON
75 3XMM J203947.6-562824 20 39 47.59 -56 28 24.96 9.74 XMM-NEWTON
3XMM J204045.0-561446 20 40 45.19 -56 14 46.68 9.81 XMM-NEWTON
76 3XMM J203840.1-561316 20 38 40.13 -56 13 16.68 9.97 XMM-NEWTON
77 3XMM J203925.0-560857 20 39 25.39 -56 08 57.48 10.00 XMM-NEWTON
78 3XMM J203942.7-562845 20 39 42.77 -56 28 45.48 10.03 XMM-NEWTON
79 3XMM J204048.8-561530 20 40 48.89 -56 15 30.24 10.05 XMM-NEWTON
80 3XMM J204027.2-561102 20 40 27.29 -56 11 02.76 10.08 XMM-NEWTON
81 3XMM J204050.9-562135 20 40 50.90 -56 21 35.28 10.19 XMM-NEWTON
82 3XMM J203827.7-562020 20 38 27.72 -56 20 20.76 10.20 XMM-NEWTON
83 3XMM J204053.2-562054 20 40 53.26 -56 20 54.24 10.34 XMM-NEWTON
84 3XMM J204006.1-560859 20 40 06.12 -56 08 59.64 10.37 XMM-NEWTON
85 3XMM J204045.0-561328 20 40 45.10 -56 13 28.20 10.42 XMM-NEWTON
86 3XMM J204052.2-561542 20 40 52.27 -56 15 42.48 10.43 XMM-NEWTON
87 3XMM J203828.8-562225 20 38 28.85 -56 22 24.96 10.57 XMM-NEWTON
88 3XMM J204056.6-561913 20 40 56.69 -56 19 13.44 10.60 XMM-NEWTON
89 3XMM J203855.6-561007 20 38 55.63 -56 10 08.04 10.60 XMM-NEWTON
90 3XMM J204050.9-562252 20 40 50.93 -56 22 52.68 10.63 XMM-NEWTON
91 3XMM J203933.8-562924 20 39 33.86 -56 29 24.72 10.72 XMM-NEWTON
92 3XMM J204049.8-562335 20 40 49.87 -56 23 35.52 10.79 XMM-NEWTON
93 3XMM J204046.2-561259 20 40 46.27 -56 12 59.76 10.80 XMM-NEWTON
94 3XMM J203827.3-561444 20 38 27.31 -56 14 44.88 10.88 XMM-NEWTON
95 3XMM J203939.2-562937 20 39 39.24 -56 29 36.96 10.89 XMM-NEWTON
96 3XMM J203822.0-561653 20 38 22.10 -56 16 53.04 11.02 XMM-NEWTON
97 3XMM J204059.0-561657 20 40 59.50 -56 16 57.72 11.06 XMM-NEWTON
98 3XMM J203828.9-561346 20 38 28.97 -56 13 46.20 11.08 XMM-NEWTON
99 3XMM J203905.5-562843 20 39 05.57 -56 28 43.32 11.09 XMM-NEWTON
100 3XMM J203957.5-560743 20 39 57.53 -56 07 43.32 11.26 XMM-NEWTON
101 3XMM J204054.6-561401 20 40 54.62 -56 14 02.04 11.33 XMM-NEWTON
102 3XMM J204024.9-562814 20 40 25.01 -56 28 14.52 11.35 XMM-NEWTON
103 3XMM J204039.4-562635 20 40 39.50 -56 26 35.16 11.35 XMM-NEWTON
104 3XMM J204053.7-562406 20 40 53.74 -56 24 06.12 11.50 XMM-NEWTON
105 3XMM J203953.4-563006 20 39 53.47 -56 30 06.12 11.52 XMM-NEWTON
106 3XMM J204057.6-562300 20 40 57.60 -56 23 00.24 11.53 XMM-NEWTON
107 3XMM J203909.3-560800 20 39 09.38 -56 08 00.24 11.55 XMM-NEWTON
108 3XMM J204046.5-562545 20 40 46.58 -56 25 45.12 11.55 XMM-NEWTON
109 3XMM J204044.8-562622 20 40 44.88 -56 26 22.56 11.76 XMM-NEWTON
110 3XMM J203931.2-563030 20 39 31.25 -56 30 30.96 11.86 XMM-NEWTON
111 3XMM J203936.8-560650 20 39 36.82 -56 06 50.76 11.89 XMM-NEWTON
112 3XMM J203900.8-562926 20 39 00.86 -56 29 26.88 12.03 XMM-NEWTON
113 3XMM J203817.0-562231 20 38 17.90 -56 22 31.44 12.14 XMM-NEWTON
114 3XMM J204026.8-560820 20 40 26.88 -56 08 20.40 12.24 XMM-NEWTON
115 3XMM J204019.7-560719 20 40 19.80 -56 07 19.20 12.66 XMM-NEWTON
116 3XMM J204010.6-563040 20 40 10.63 -56 30 39.96 12.66 XMM-NEWTON
117 3XMM J203828.4-562635 20 38 28.44 -56 26 35.88 12.69 XMM-NEWTON
118 3XMM J203819.7-562523 20 38 19.75 -56 25 23.16 12.99 XMM-NEWTON
119 3XMM J203837.0-563001 20 38 37.20 -56 30 01.08 14.29 XMM-NEWTON
120 3XMM J204056.7-562856 20 40 56.78 -56 28 55.92 14.70 XMM-NEWTON
121 3XMM J204105.6-560953 20 41 05.71 -56 09 53.64 14.79 XMM-NEWTON
122 3XMM J204051.0-563033 20 40 51.60 -56 30 33.48 15.35 XMM-NEWTON
123 3XMM J204057.6-560722 20 40 57.60 -56 07 22.44 15.63 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J203946-561133 20 39 46.80 -56 11 33.00 7.23 SUMSS
2 SUMSS J203911-561058 20 39 11.40 -56 10 58.08 8.74 SUMSS
3 SUMSS J204048-561956 20 40 48.50 -56 19 57.00 9.53 SUMSS
4 SUMSS J204050-562133 20 40 50.81 -56 21 33.84 10.17 SUMSS
GLEAM J204051-562127 20 40 51.00 -56 21 28.08 10.17 GLEAMEGCAT
5 SUMSS J203825-561515 20 38 25.30 -56 15 15.84 10.97 SUMSS
6 SUMSS J203857-560926 20 38 57.79 -56 09 25.92 11.00 SUMSS
7 SUMSS J203825-561059 20 38 25.61 -56 10 59.16 12.95 SUMSS
GLEAM J203824-561055 20 38 24.91 -56 10 55.92 13.06 GLEAMEGCAT

Penn State University Goddard Space Flight Center Swift