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 J1739.2-2717

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1739.2-2717 Swift-XRT detections in the field for 4FGL J1739.2-2717

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 39 35.76 -27 29 34.65 4.51 (8.0 ± 1.3) x 10-3 52 6.556 6.383
2 17 39 47.04 -27 18 09.75 4.49 (5.7 ± 1.0) x 10-3 60 6.271 5.830
3 17 39 27.85 -27 21 14.04 4.56 (3.0 ± 0.8) x 10-3 45 3.985 3.612

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 17 38 51.82 -27 22 52.97 5.17 (1.6 ± 0.6) x 10-3 25 2.726 2.847
2 17 39 03.40 -27 12 34.80 5.28 (1.2 ± 0.5) x 10-3 22 2.683 2.365

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1739.2-2717 Swift-XRT image with known radio, optical and UV sources for 4FGL J1739.2-2717

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2CXO J173922.8-272102 17 39 22.82 -27 21 02.88 3.64 CHANDRA
2 CXOGBS J173927.6-272110 17 39 27.67 -27 21 10.80 4.29 CHANDRA
X173927.70-272110.8 17 39 27.70 -27 21 10.80 4.29 CHANDRA
CXOGSG J173927.6-272112 17 39 27.67 -27 21 12.24 4.31 CHANDRA
2CXO J173927.6-272112 17 39 27.70 -27 21 12.24 4.31 CHANDRA
3 CXOGBS J173919.1-272240 17 39 19.15 -27 22 40.44 5.01 CHANDRA
X173919.16-272240.4 17 39 19.15 -27 22 40.44 5.01 CHANDRA
2CXO J173919.1-272240 17 39 19.13 -27 22 40.44 5.01 CHANDRA
CXOGSG J173919.1-272240 17 39 19.15 -27 22 40.80 5.01 CHANDRA
4 CXOGBS J173939.7-271908 17 39 39.72 -27 19 08.04 5.39 CHANDRA
5 X173927.69-272319.0 17 39 27.70 -27 23 18.96 6.15 CHANDRA
6 CXOGSG J173938.0-272135 17 39 38.06 -27 21 35.28 6.19 CHANDRA
CXOGBS J173938.0-272135 17 39 38.09 -27 21 35.64 6.20 CHANDRA
X173938.08-272135.5 17 39 38.09 -27 21 35.64 6.20 CHANDRA
2CXO J173938.0-272135 17 39 38.09 -27 21 35.64 6.20 CHANDRA
7 2CXO J173946.9-271809 17 39 46.97 -27 18 09.36 6.82 CHANDRA
X173946.98-271809.5 17 39 46.99 -27 18 09.36 6.82 CHANDRA
CXOGSG J173946.9-271809 17 39 46.99 -27 18 09.36 6.82 CHANDRA
CXOGBS J173946.9-271809 17 39 46.99 -27 18 09.36 6.82 CHANDRA
8 X173927.41-272627.8 17 39 27.41 -27 26 27.96 9.10 CHANDRA
9 X173951.66-272308.3 17 39 51.65 -27 23 08.16 9.54 CHANDRA
10 2CXO J173958.2-271526 17 39 58.27 -27 15 26.28 9.59 CHANDRA
11 X173948.46-272416.2 17 39 48.46 -27 24 16.20 9.69 CHANDRA
CXOGBS J173948.4-272416 17 39 48.46 -27 24 16.20 9.69 CHANDRA
2CXO J173948.4-272416 17 39 48.48 -27 24 16.20 9.70 CHANDRA
CXOGSG J173948.4-272416 17 39 48.48 -27 24 16.20 9.70 CHANDRA
12 CXOGSG J173950.4-270915 17 39 50.47 -27 09 15.48 11.36 CHANDRA
2CXO J173950.5-270915 17 39 50.52 -27 09 15.84 11.36 CHANDRA
X173950.47-270914.9 17 39 50.47 -27 09 14.76 11.36 CHANDRA
CXOGBS J173950.4-270914 17 39 50.47 -27 09 14.76 11.36 CHANDRA
13 CXOGSG J173946.5-272733 17 39 46.51 -27 27 33.84 11.92 CHANDRA
X173946.52-272734.0 17 39 46.51 -27 27 33.84 11.92 CHANDRA
14 1RXS J173933.8-272907 17 39 33.79 -27 29 07.44 12.06 ROSAT
15 CXOGBS J173958.7-272532 17 39 58.80 -27 25 32.16 12.25 CHANDRA
16 X173935.67-272935.0 17 39 35.66 -27 29 35.16 12.63 CHANDRA
2CXO J173935.7-272935 17 39 35.76 -27 29 35.16 12.64 CHANDRA
X173935.77-272935.9 17 39 35.76 -27 29 35.88 12.65 CHANDRA
CXOGSG J173935.7-272935 17 39 35.76 -27 29 35.88 12.65 CHANDRA
CXOGBS J173935.7-272935 17 39 35.76 -27 29 35.88 12.65 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 V543 Oph 17 39 24.12 -27 19 45.48 2.69 GCVS
2 NSV 23158 17 39 08.69 -27 14 17.88 3.81 GCVSNSVARS
3 NVSS J173859-271916 17 38 59.40 -27 19 15.96 4.08 NVSS
4 NSV 23141 17 39 01.80 -27 20 29.04 4.26 GCVSNSVARS
NSV 23144 17 39 02.69 -27 20 45.96 4.31 GCVSNSVARS
5 NSV 23198 17 39 29.71 -27 13 48.00 4.91 GCVSNSVARS
6 NSV 23184 17 39 21.00 -27 12 21.96 5.44 GCVSNSVARS
7 NSV 23180 17 39 19.61 -27 23 21.84 5.71 GCVSNSVARS
8 NSV 23134 17 38 59.81 -27 22 46.92 6.27 GCVSNSVARS
9 NVSS J173945-271807 17 39 46.01 -27 18 06.84 6.59 NVSS
10 NSV 23107 17 38 46.39 -27 19 50.16 6.98 GCVSNSVARS
11 NSV 23213 17 39 38.90 -27 12 07.92 7.50 GCVSNSVARS
12 NSV 23168 17 39 12.19 -27 25 18.84 7.67 GCVSNSVARS
13 MGPS J173852-272406 17 38 52.70 -27 24 06.84 8.29 MGPS2
14 NSV 23093 17 38 38.71 -27 14 51.00 8.84 GCVSNSVARS
15 PPM 267116 17 39 10.30 -27 26 30.84 8.91 PPM
CD-2711783 17 39 10.32 -27 26 30.84 8.91 ACRS
SAO 185590 17 39 10.51 -27 26 33.00 8.94 SAO
16 NSV 23251 17 39 56.90 -27 15 27.00 9.29 GCVSNSVARS
17 NSV 23224 17 39 42.79 -27 25 14.88 9.56 GCVSNSVARS
18 NSV 23199 17 39 30.10 -27 08 36.96 9.59 GCVSNSVARS
19 NVSS J173832-271917 17 38 32.59 -27 19 17.04 9.84 NVSS
20 HD 316051 17 39 52.20 -27 23 44.16 9.99 HDEC
PPM 733403 17 39 52.20 -27 23 44.88 10.00 PPM
21 NSV 23256 17 40 01.20 -27 18 41.04 10.01 GCVSNSVARS
22 NSV 23104 17 38 45.10 -27 25 32.16 10.46 GCVSNSVARS
23 NVSS J173931-272744 17 39 31.30 -27 27 43.92 10.57 NVSS
[PME2013] J1739-2727 17 39 31.20 -27 27 45.00 10.58 AT2FGLUS
[SPT2015] ATCA J1739-2727 17 39 31.20 -27 27 45.00 10.58 FER2FUSRID
24 NSV 23072 17 38 28.70 -27 18 42.12 10.63 GCVSNSVARS
25 MGPS J173851-272705 17 38 51.31 -27 27 05.04 10.90 MGPS2
26 NSV 23074 17 38 29.21 -27 13 50.88 11.16 GCVSNSVARS
27 NSV 23067 17 38 26.59 -27 15 39.96 11.24 GCVSNSVARS
28 NSV 23253 17 39 57.60 -27 24 42.84 11.54 GCVSNSVARS
29 HD 316049 17 38 28.70 -27 13 00.84 11.58 HDEC
30 NSV 23076 17 38 29.50 -27 22 49.08 11.59 GCVSNSVARS
31 NSV 23133 17 38 59.81 -27 28 54.84 11.80 GCVSNSVARS
32 MGPS J173846-272748 17 38 46.90 -27 27 47.88 12.03 MGPS2
33 NVSS J173823-271407 17 38 23.90 -27 14 07.08 12.19 NVSS
TGSSADR J173823.9-271405 17 38 23.90 -27 14 04.92 12.20 GMRTAS150M
MGPS J173823-271404 17 38 23.50 -27 14 04.92 12.29 MGPS2
34 NSV 23209 17 39 35.81 -27 29 35.88 12.65 GCVSNSVARS
35 NSV 23226 17 39 43.61 -27 28 57.00 12.77 GCVSNSVARS
36 HD 316050 17 38 22.73 -27 22 30.36 12.84 HDEC
PPM 267106 17 38 22.73 -27 22 30.36 12.84 PPM
CD-2711769 17 38 22.68 -27 22 30.36 12.85 ACRS
37 NSV 23100 17 38 43.10 -27 28 21.00 12.95 GCVSNSVARS
38 -27:11772 17 38 22.82 -27 12 23.04 13.03 NLTT
39 NSV 23113 17 38 49.20 -27 29 26.88 13.20 GCVSNSVARS
HD 316048 17 38 22.51 -27 12 06.48 13.21 HDEC
40 920- 23 17 39 55.73 -27 07 34.68 13.39 NLTT
41 NSV 23064 17 38 25.61 -27 10 27.84 13.40 GCVSNSVARS
42 NSV 23062 17 38 24.00 -27 26 02.04 14.30 GCVSNSVARS
43 NVSS J173824-272912 17 38 24.60 -27 29 12.84 16.26 NVSS

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