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.

4FGL J1806.9-2455c

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1806.9-2455c Swift-XRT detections in the field for 4FGL J1806.9-2455c

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 07 33.75 -24 59 17.95 5.59 (4.5 ± 1.3) x 10-3 21 3.886 3.416
2 18 06 15.33 -24 50 33.34 6.52 (6 ± 2) x 10-3 13 3.095 3.096

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 18 07 24.14 -25 05 21.00 7.71 (2.4 ± 0.9) x 10-3 9 2.435 2.589
2 18 07 43.28 -24 56 49.99 6.41 (2.2 ± 1.0) x 10-3 8 2.260 2.215

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1806.9-2455c Swift-XRT image with known radio, optical and UV sources for 4FGL J1806.9-2455c

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J180700.7-245619 18 07 00.70 -24 56 18.96 1.16 ROSAT
2RXS J180700.8-245620 18 07 00.84 -24 56 20.40 1.20 ROSAT
2 2CXO J180702.6-245714 18 07 02.62 -24 57 14.04 2.11 CHANDRA
3 CXOGSG J180708.2-245726 18 07 08.28 -24 57 26.64 3.21 CHANDRA
4 2CXO J180710.7-245642 18 07 10.75 -24 56 42.72 3.39 CHANDRA
5 CXOGSG J180704.4-245850 18 07 04.51 -24 58 50.16 3.68 CHANDRA
2CXO J180704.5-245850 18 07 04.51 -24 58 50.16 3.68 CHANDRA
X180704.50-245850.3 18 07 04.51 -24 58 50.16 3.68 CHANDRA
2CXO J180704.8-245913 18 07 04.85 -24 59 13.92 4.06 CHANDRA
CXOGSG J180704.8-245913 18 07 04.87 -24 59 13.92 4.07 CHANDRA
X180704.92-245913.8 18 07 04.92 -24 59 13.92 4.07 CHANDRA
6 2CXO J180715.0-245655 18 07 15.10 -24 56 55.32 4.38 CHANDRA
7 2CXO J180712.7-245219 18 07 12.77 -24 52 19.20 4.93 CHANDRA
8 CXOGSG J180711.3-245958 18 07 11.38 -24 59 58.56 5.50 CHANDRA
X180711.38-245959.2 18 07 11.38 -24 59 59.28 5.50 CHANDRA
9 X180718.61-245815.3 18 07 18.60 -24 58 15.24 5.64 CHANDRA
10 2CXO J180722.9-245447 18 07 22.94 -24 54 47.88 6.03 CHANDRA
11 CXOGSG J180712.8-250035 18 07 12.89 -25 00 35.28 6.19 CHANDRA
X180712.87-250035.4 18 07 12.86 -25 00 35.28 6.19 CHANDRA
2CXO J180712.8-250035 18 07 12.89 -25 00 35.28 6.19 CHANDRA
12 CXOGSG J180720.2-245843 18 07 20.30 -24 58 43.68 6.20 CHANDRA
X180720.31-245843.8 18 07 20.30 -24 58 43.68 6.21 CHANDRA
13 X180718.76-245953.9 18 07 18.77 -24 59 53.88 6.60 CHANDRA
2CXO J180718.7-245954 18 07 18.77 -24 59 54.24 6.60 CHANDRA
CXOGSG J180718.7-245954 18 07 18.77 -24 59 53.88 6.60 CHANDRA
14 2CXO J180709.6-250137 18 07 09.65 -25 01 36.84 6.69 CHANDRA
CXOGSG J180720.5-245940 18 07 20.52 -24 59 40.56 6.77 CHANDRA
X180720.54-245940.6 18 07 20.54 -24 59 40.56 6.77 CHANDRA
2CXO J180720.5-245940 18 07 20.52 -24 59 40.92 6.77 CHANDRA
2CXO J180720.2-245951 18 07 20.21 -24 59 51.00 6.82 CHANDRA
CXOGSG J180720.2-245951 18 07 20.21 -24 59 51.00 6.82 CHANDRA
X180720.22-245950.9 18 07 20.23 -24 59 51.00 6.82 CHANDRA
15 CXOGSG J180714.9-250104 18 07 14.98 -25 01 04.44 6.86 CHANDRA
X180714.97-250104.5 18 07 14.98 -25 01 04.44 6.86 CHANDRA
2CXO J180714.9-250104 18 07 15.00 -25 01 04.44 6.87 CHANDRA
16 2CXO J180725.2-245816 18 07 25.20 -24 58 16.32 7.00 CHANDRA
17 X180719.08-250036.1 18 07 19.08 -25 00 36.00 7.12 CHANDRA
2CXO J180719.0-250036 18 07 19.08 -25 00 36.36 7.13 CHANDRA
CXOGSG J180719.0-250036 18 07 19.08 -25 00 36.36 7.13 CHANDRA
18 X180720.72-250011.9 18 07 20.71 -25 00 11.88 7.13 CHANDRA
CXOGSG J180720.7-250012 18 07 20.71 -25 00 12.24 7.13 CHANDRA
2CXO J180720.7-250012 18 07 20.71 -25 00 11.88 7.13 CHANDRA
2CXO J180716.8-250114 18 07 16.87 -25 01 14.16 7.25 CHANDRA
19 2CXO J180730.2-245745 18 07 30.24 -24 57 45.36 7.92 CHANDRA
CXOGSG J180730.2-245745 18 07 30.24 -24 57 45.36 7.92 CHANDRA
X180730.25-245745.7 18 07 30.24 -24 57 45.72 7.92 CHANDRA
20 X180729.76-245816.7 18 07 29.76 -24 58 16.68 7.97 CHANDRA
21 CXOGSG J180731.5-245434 18 07 31.58 -24 54 34.92 8.00 CHANDRA
X180731.63-245434.8 18 07 31.63 -24 54 34.92 8.01 CHANDRA
2CXO J180731.6-245435 18 07 31.63 -24 54 35.28 8.01 CHANDRA
22 2CXO J180721.1-250132 18 07 21.19 -25 01 32.52 8.13 CHANDRA
23 2CXO J180724.9-250124 18 07 24.94 -25 01 24.60 8.64 CHANDRA
24 CXOGSG J180727.2-250052 18 07 27.24 -25 00 52.56 8.71 CHANDRA
25 X180735.17-245624.9 18 07 35.16 -24 56 25.08 8.78 CHANDRA
X180728.76-250055.5 18 07 28.75 -25 00 55.44 9.01 CHANDRA
CXOGSG J180728.7-250055 18 07 28.75 -25 00 55.80 9.01 CHANDRA
2CXO J180728.7-250055 18 07 28.75 -25 00 55.44 9.01 CHANDRA
26 X180730.56-250030.7 18 07 30.55 -25 00 30.60 9.12 CHANDRA
CXOGSG J180730.6-250030 18 07 30.67 -25 00 30.96 9.14 CHANDRA
2CXO J180730.6-250030 18 07 30.67 -25 00 30.96 9.14 CHANDRA
27 X180733.77-245924.3 18 07 33.77 -24 59 24.36 9.23 CHANDRA
2CXO J180733.7-245924 18 07 33.77 -24 59 24.36 9.23 CHANDRA
CXOGSG J180733.7-245924 18 07 33.77 -24 59 24.36 9.23 CHANDRA
28 2CXO J180712.9-250412 18 07 12.94 -25 04 12.00 9.34 CHANDRA
X180712.93-250412.6 18 07 12.94 -25 04 12.72 9.35 CHANDRA
CXOGSG J180712.9-250412 18 07 12.94 -25 04 12.72 9.35 CHANDRA
29 2CXO J180716.7-250356 18 07 16.75 -25 03 56.16 9.49 CHANDRA
30 CXOGSG J180705.8-250454 18 07 05.83 -25 04 54.84 9.53 CHANDRA
2CXO J180705.7-250455 18 07 05.74 -25 04 55.56 9.53 CHANDRA
31 X180650.38-250503.5 18 06 50.38 -25 05 03.48 9.54 CHANDRA
CXOGSG J180705.5-250457 18 07 05.59 -25 04 57.36 9.56 CHANDRA
2CXO J180706.3-250510 18 07 06.41 -25 05 09.96 9.80 CHANDRA
32 2CXO J180715.2-250452 18 07 15.29 -25 04 53.04 10.18 CHANDRA
33 2CXO J180735.3-250116 18 07 35.38 -25 01 15.96 10.44 CHANDRA
34 2CXO J180721.7-250425 18 07 21.77 -25 04 26.04 10.50 CHANDRA
35 2CXO J180642.1-250535 18 06 42.10 -25 05 35.52 10.50 CHANDRA
36 2CXO J180711.8-250540 18 07 11.88 -25 05 40.20 10.63 CHANDRA
37 CXOGSG J180733.9-250219 18 07 33.98 -25 02 19.68 10.80 CHANDRA
2CXO J180734.0-250220 18 07 34.03 -25 02 20.04 10.82 CHANDRA
X180734.02-250220.3 18 07 34.03 -25 02 20.40 10.82 CHANDRA
38 2CXO J180725.6-250528 18 07 25.63 -25 05 28.68 11.85 CHANDRA
39 CXOGSG J180735.7-250329 18 07 35.74 -25 03 29.88 11.86 CHANDRA
40 2CXO J180721.2-250620 18 07 21.22 -25 06 20.88 12.09 CHANDRA
41 2CXO J180730.7-250500 18 07 30.74 -25 05 00.60 12.17 CHANDRA
1BMW 180726.3-250555 18 07 26.35 -25 05 54.96 12.31 ROSAT
42 CXOGSG J180725.9-250604 18 07 25.94 -25 06 04.32 12.38 CHANDRA
2RXS J180725.9-250604 18 07 25.99 -25 06 04.68 12.39 ROSAT
X180725.94-250605.2 18 07 25.94 -25 06 05.04 12.40 CHANDRA
2CXO J180725.9-250605 18 07 25.97 -25 06 05.76 12.41 CHANDRA
1RXS J180725.9-250607 18 07 25.90 -25 06 06.84 12.42 ROSAT
43 4XMM J180640.5-244343 18 06 40.56 -24 43 43.32 12.44 XMM-NEWTON
2CXO J180727.2-250616 18 07 27.24 -25 06 16.92 12.72 CHANDRA
CXOGSG J180727.2-250617 18 07 27.24 -25 06 17.28 12.72 CHANDRA
X180727.26-250617.0 18 07 27.26 -25 06 16.92 12.73 CHANDRA
2RXP J180727.5-250621 18 07 27.43 -25 06 20.88 12.80 ROSAT
44 4XMM J180620.1-244543 18 06 20.16 -24 45 43.20 12.90 XMM-NEWTON
45 4XMM J180728.0-244417 18 07 28.03 -24 44 17.88 13.38 XMM-NEWTON
46 4XMM J180623.7-244339 18 06 23.71 -24 43 39.36 14.11 XMM-NEWTON
47 X180735.52-250649.3 18 07 35.52 -25 06 49.32 14.25 CHANDRA
2CXO J180735.3-250652 18 07 35.35 -25 06 52.56 14.27 CHANDRA
CXOGSG J180735.3-250652 18 07 35.38 -25 06 52.56 14.28 CHANDRA
X180735.32-250653.2 18 07 35.33 -25 06 53.28 14.28 CHANDRA
2CXO J180733.9-250709 18 07 33.96 -25 07 09.12 14.30 CHANDRA
48 4XMM J180604.5-244721 18 06 04.51 -24 47 21.48 14.42 XMM-NEWTON
49 CXOGSG J180740.6-250626 18 07 40.66 -25 06 26.28 14.72 CHANDRA
X180740.69-250626.2 18 07 40.68 -25 06 26.28 14.72 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J180659-245628 18 06 59.11 -24 56 29.04 1.03 NVSS
2 NVSS J180704-245235 18 07 04.70 -24 52 35.04 3.54 NVSS
3 NVSS J180655-245051 18 06 55.90 -24 50 51.00 4.77 NVSS
4 QORG J180717.6-245423 18 07 17.59 -24 54 23.04 4.92 QORGCAT
5 V4205 Sgr 18 06 33.43 -24 53 49.92 5.56 GCVS
6 NVSS J180636-245111 18 06 36.31 -24 51 11.88 6.39 NVSS
7 HD 315166 18 07 14.74 -25 00 37.44 6.47 HDEC
8 NGC 6544 18 07 18.00 -25 00 00.00 6.53 NGC2000
9 NVSS J180710-244952 18 07 10.30 -24 49 51.96 6.54 NVSS
10 HD 315165 18 06 54.48 -25 02 12.84 6.61 HDEC
ESO 180415-2500.3 18 07 19.92 -24 59 52.80 6.79 ESOUPPSALA
11 PSR J1807-2459A 18 07 20.40 -24 59 53.16 6.86 ATNFPULSAR
NGC 6544 18 07 20.59 -24 59 50.28 6.88 GLOBCLUST
PSR J1807-2459B 18 07 20.90 -25 00 02.16 7.05 ATNFPULSAR
12 NVSS J180625-245856 18 06 25.70 -24 58 57.00 7.75 NVSS
TGSSADR J180625.6-245901 18 06 25.70 -24 59 02.04 7.80 GMRTAS150M
13 NVSS J180654-244653 18 06 54.60 -24 46 54.12 8.74 NVSS
14 NVSS J180617-245459 18 06 17.59 -24 54 59.04 8.86 NVSS
15 QORG J180616.8-245427 18 06 16.80 -24 54 27.00 9.10 QORGCAT
16 HD 315163 18 06 14.69 -24 55 20.28 9.51 HDEC
17 866- 12 18 07 22.92 -25 03 34.56 9.94 NLTT
18 HD 315164 18 06 21.05 -25 01 47.64 10.15 HDEC
19 NVSS J180743-245724 18 07 43.90 -24 57 24.84 10.87 NVSS
20 HD 315162 18 06 28.39 -24 46 47.28 10.91 HDEC
21 NVSS J180741-250021 18 07 41.11 -25 00 20.88 11.14 NVSS
22 NVSS J180713-244446 18 07 13.51 -24 44 45.96 11.51 NVSS
23 NVSS J180719-244501 18 07 19.20 -24 45 01.08 11.78 NVSS
24 NVSS J180703-244357 18 07 03.79 -24 43 57.00 11.78 NVSS
25 NVSS J180605-245307 18 06 05.59 -24 53 08.16 11.84 NVSS
26 NVSS J180610-250117 18 06 10.51 -25 01 18.12 11.88 NVSS
27 HD 315167 18 07 43.63 -25 01 13.08 12.04 HDEC
28 HD 315161 18 07 23.59 -24 45 12.24 12.08 HDEC
29 NVSS J180709-244345 18 07 09.31 -24 43 45.84 12.20 NVSS
30 NVSS J180604-245850 18 06 04.39 -24 58 50.88 12.27 NVSS
31 NVSS J180613-250339 18 06 13.51 -25 03 38.88 12.65 NVSS
32 SAO 186306 18 07 27.34 -25 06 15.48 12.71 SAO
PPM 267889 18 07 27.24 -25 06 16.56 12.72 PPM
CD-2512744 18 07 27.26 -25 06 16.56 12.72 ACRS
33 SAO 186277 18 06 19.27 -24 45 43.20 13.03 SAO
165517 18 07 27.84 -25 06 34.20 13.04 WACKERLING
PPM 267857 18 06 19.22 -24 45 42.48 13.05 PPM
CD-2413885 18 06 19.22 -24 45 42.48 13.05 ACRS
34 HD 315160 18 07 47.90 -24 49 15.96 13.26 HDEC
35 NVSS J180608-250320 18 06 08.81 -25 03 20.88 13.31 NVSS
36 NVSS J180747-250241 18 07 47.40 -25 02 40.92 13.52 NVSS
37 NVSS J180604-250407 18 06 04.90 -25 04 06.96 14.47 NVSS
AT20G J180740-250625 18 07 40.70 -25 06 24.84 14.71 AT20G
38 NVSS J180740-250626 18 07 40.70 -25 06 27.00 14.73 NVSS
TGSSADR J180740.6-250627 18 07 40.61 -25 06 28.08 14.73 GMRTAS150M
PMN J1807-2506 18 07 42.00 -25 06 32.04 14.99 PMN
39 TGSSADR J180611.6-244353 18 06 11.71 -24 43 53.04 15.54 GMRTAS150M

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