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 J1741.6-2730

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1741.6-2730 Swift-XRT detections in the field for 4FGL J1741.6-2730

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 40 38.47 -27 37 08.14 3.73 (3.6 ± 0.2) x 10-2 280 16.010 14.730
2 17 40 52.51 -27 23 49.14 4.07 (7.9 ± 1.2) x 10-3 74 6.301 6.333

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 40 26.66 -27 39 11.39 4.90 (2.0 ± 0.8) x 10-3 16 2.682 2.600
2 17 41 43.57 -27 38 18.55 4.49 (1.8 ± 0.8) x 10-3 37 2.684 2.380
3 17 40 52.51 -27 23 49.14 4.07 (1.7 ± 0.9) x 10-3 74 3.034 1.903
4 17 40 38.48 -27 37 08.26 3.73 (1.3 ± 1.4) x 10-3 282 3.008 0.942

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1741.6-2730 Swift-XRT image with known radio, optical and UV sources for 4FGL J1741.6-2730

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J174142.9-272852 17 41 42.91 -27 28 52.32 1.93 CHANDRA
2 CXOGBS J174125.0-273143 17 41 25.03 -27 31 42.96 3.29 CHANDRA
X174125.04-273143.0 17 41 25.03 -27 31 42.96 3.29 CHANDRA
CXOGSG J174125.0-273143 17 41 25.03 -27 31 42.96 3.29 CHANDRA
3 CXOGBS J174150.7-272802 17 41 50.74 -27 28 03.00 3.64 CHANDRA
4 X174135.08-272622.5 17 41 35.09 -27 26 22.56 4.30 CHANDRA
5 2CXO J174136.9-273501 17 41 36.91 -27 35 01.32 4.46 CHANDRA
CXOGSG J174136.9-273501 17 41 36.91 -27 35 01.32 4.46 CHANDRA
CXOGBS J174136.9-273501 17 41 36.91 -27 35 01.68 4.46 CHANDRA
X174136.91-273501.5 17 41 36.91 -27 35 01.68 4.46 CHANDRA
6 X174141.40-273506.0 17 41 41.40 -27 35 06.00 4.54 CHANDRA
7 CXOGSG J174136.5-273625 17 41 36.55 -27 36 24.84 5.85 CHANDRA
CXOGBS J174136.5-273625 17 41 36.55 -27 36 25.20 5.86 CHANDRA
X174136.54-273625.2 17 41 36.55 -27 36 25.20 5.86 CHANDRA
8 X174201.69-273407.9 17 42 01.68 -27 34 08.04 6.16 CHANDRA
9 CXOGBS J174140.4-273647 17 41 40.46 -27 36 47.88 6.22 CHANDRA
2CXO J174140.5-273647 17 41 40.51 -27 36 47.88 6.22 CHANDRA
10 X174154.50-272504.7 17 41 54.50 -27 25 04.80 6.50 CHANDRA
11 X174124.96-272442.9 17 41 24.96 -27 24 42.84 6.65 CHANDRA
12 X174114.25-273502.5 17 41 14.26 -27 35 02.40 7.06 CHANDRA
4XMM J174207.4-273442 17 42 07.42 -27 34 42.24 7.53 XMM-NEWTON
13 CXOGBS J174207.3-273444 17 42 07.34 -27 34 44.76 7.54 CHANDRA
X174207.34-273444.7 17 42 07.34 -27 34 44.76 7.54 CHANDRA
2CXO J174207.3-273444 17 42 07.34 -27 34 44.76 7.54 CHANDRA
14 X174211.89-272758.5 17 42 11.88 -27 27 58.68 7.75 CHANDRA
15 CXOGSG J174214.0-273010 17 42 14.04 -27 30 10.08 7.79 CHANDRA
2CXO J174214.0-273009 17 42 14.06 -27 30 10.08 7.79 CHANDRA
X174214.06-273010.6 17 42 14.06 -27 30 10.44 7.79 CHANDRA
16 CXOGSG J174137.7-273833 17 41 37.78 -27 38 33.00 7.97 CHANDRA
17 X174103.35-273159.4 17 41 03.36 -27 31 59.52 8.02 CHANDRA
18 X174107.91-273446.3 17 41 07.92 -27 34 46.20 8.06 CHANDRA
19 CXOGSG J174105.1-272704 17 41 05.11 -27 27 04.32 8.29 CHANDRA
20 X174204.39-272414.9 17 42 04.39 -27 24 14.76 8.48 CHANDRA
21 CXOGSG J174115.4-273741 17 41 15.46 -27 37 41.16 8.80 CHANDRA
22 1WGA J1742.2-2734 17 42 15.00 -27 34 58.44 9.11 ROSAT
23 4XMM J174209.5-273704 17 42 09.53 -27 37 04.44 9.38 XMM-NEWTON
24 2CXO J174153.9-272132 17 41 53.95 -27 21 32.40 9.64 CHANDRA
25 CXOGSG J174223.1-272811 17 42 23.04 -27 28 11.64 10.06 CHANDRA
CXOGBS J174223.0-272807 17 42 23.04 -27 28 08.04 10.07 CHANDRA
X174223.01-272806.6 17 42 23.02 -27 28 06.60 10.07 CHANDRA
2CXO J174223.2-272812 17 42 23.23 -27 28 12.72 10.10 CHANDRA
X174223.24-272811.5 17 42 23.23 -27 28 11.64 10.10 CHANDRA
CXOGBS J174223.2-272812 17 42 23.28 -27 28 12.00 10.11 CHANDRA
X174223.27-272812.0 17 42 23.28 -27 28 12.00 10.11 CHANDRA
26 2CXO J174053.2-273101 17 40 53.28 -27 31 01.56 10.14 CHANDRA
X174053.24-273101.4 17 40 53.23 -27 31 01.56 10.15 CHANDRA
CXOGSG J174053.2-273101 17 40 53.23 -27 31 01.56 10.15 CHANDRA
27 4XMM J174156.7-273957 17 41 56.74 -27 39 57.60 10.17 XMM-NEWTON
28 X174055.39-272659.8 17 40 55.39 -27 26 59.64 10.31 CHANDRA
29 X174053.20-272759.9 17 40 53.21 -27 27 59.76 10.48 CHANDRA
30 4XMM J174155.0-274031 17 41 55.03 -27 40 31.44 10.55 XMM-NEWTON
31 X174133.95-274122.6 17 41 33.96 -27 41 22.56 10.85 CHANDRA
32 X174049.87-272900.7 17 40 49.87 -27 29 00.60 11.00 CHANDRA
33 4XMM J174202.0-274035 17 42 02.02 -27 40 35.76 11.23 XMM-NEWTON
34 1RXS J174052.3-273532 17 40 52.30 -27 35 31.92 11.47 ROSAT
1RXS J174052.3-273532 17 40 52.30 -27 35 31.92 11.47 ROSAT
35 X174050.57-272615.0 17 40 50.57 -27 26 15.00 11.58 CHANDRA
36 1RXS J174220.8-273736 17 42 20.81 -27 37 36.12 11.62 ROSAT
1RXS J174220.8-273736 17 42 20.81 -27 37 36.12 11.62 ROSAT
2RXS J174220.7-273737 17 42 20.76 -27 37 37.92 11.64 ROSAT
37 CXOGSG J174049.6-273505 17 40 49.66 -27 35 04.92 11.82 CHANDRA
2CXO J174049.5-273506 17 40 49.56 -27 35 06.00 11.85 CHANDRA
38 X174050.70-272413.7 17 40 50.71 -27 24 13.68 12.46 CHANDRA
CXOGBS J174050.7-272413 17 40 50.71 -27 24 13.68 12.46 CHANDRA
39 X174210.99-274054.0 17 42 10.99 -27 40 54.12 12.52 CHANDRA
40 X174114.84-274200.2 17 41 14.83 -27 42 00.36 12.61 CHANDRA
41 4XMM J174215.4-274018 17 42 15.46 -27 40 18.84 12.64 XMM-NEWTON
42 4XMM J174216.6-274154 17 42 16.54 -27 41 53.88 14.04 XMM-NEWTON
4XMM J174216.6-274154 17 42 16.78 -27 41 56.76 14.11 XMM-NEWTON
43 X174044.98-272155.2 17 40 44.98 -27 21 55.08 14.79 CHANDRA
CXOGSG J174044.9-272155 17 40 44.98 -27 21 55.08 14.79 CHANDRA
2CXO J174044.9-272155 17 40 44.98 -27 21 55.44 14.79 CHANDRA
CXOGBS J174044.9-272155 17 40 44.98 -27 21 55.08 14.79 CHANDRA
44 2CXO J174045.5-273938 17 40 45.53 -27 39 38.88 14.91 CHANDRA
X174045.42-273938.4 17 40 45.43 -27 39 38.52 14.93 CHANDRA
45 X174227.80-272007.7 17 42 27.79 -27 20 07.80 15.06 CHANDRA
CXOGBS J174227.8-272007 17 42 27.79 -27 20 07.80 15.06 CHANDRA
2CXO J174227.7-272007 17 42 27.79 -27 20 07.44 15.06 CHANDRA
CXOGSG J174227.9-272008 17 42 27.98 -27 20 08.88 15.08 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NSV 23410 17 41 37.10 -27 29 02.04 1.61 GCVSNSVARS
2 NSV 23414 17 41 42.31 -27 33 55.08 3.41 GCVSNSVARS
3 HD 316122 17 41 36.50 -27 25 57.36 4.66 HDEC
4 [WBH2005] G0.773+1.594 17 41 18.10 -27 26 29.04 6.18 WBHGP20CM
5 QORG J174140.5-273649 17 41 40.51 -27 36 48.96 6.24 QORGCAT
6 NVSS J174109-273055 17 41 09.70 -27 30 55.08 6.50 NVSS
7 NVSS J174110-273219 17 41 10.20 -27 32 18.96 6.62 NVSS
MGPS J174109-273123 17 41 09.10 -27 31 23.88 6.66 MGPS2
GCPS 0.636+1.537 17 41 11.50 -27 35 17.88 7.70 GCPS
TGSSADR J174111.1-273518 17 41 11.21 -27 35 18.96 7.76 GMRTAS150M
8 NVSS J174111-273518 17 41 11.11 -27 35 17.88 7.77 NVSS
[WBH2005] G0.635+1.539 17 41 10.99 -27 35 17.88 7.78 WBHGP20CM
MGPS J174111-273522 17 41 10.99 -27 35 21.84 7.83 MGPS2
9 PSR J1741-2733 17 41 01.30 -27 33 51.12 8.96 ATNFPULSAR
PSR J1741-2733 17 41 01.30 -27 33 51.12 8.96 PMPULSAR
MGPS J174100-273340 17 41 00.19 -27 33 39.96 9.13 MGPS2
10 NSV 23358 17 40 57.70 -27 32 30.12 9.35 GCVSNSVARS
11 HD 316125 17 42 13.75 -27 35 58.92 9.41 HDEC
PPM 733425 17 42 13.75 -27 35 59.28 9.41 PPM
12 NSV 23355 17 40 55.39 -27 28 22.08 9.92 GCVSNSVARS
13 NSV 23434 17 41 55.51 -27 39 51.12 9.96 GCVSNSVARS
14 [WBH2005] G0.713+1.330 17 42 10.39 -27 37 54.12 10.10 WBHGP20CM
15 HD 316126 17 42 18.07 -27 35 59.28 10.21 HDEC
PPM 733427 17 42 18.07 -27 35 59.28 10.21 PPM
TGSSADR J174209.5-272206 17 42 09.50 -27 22 06.96 10.85 GMRTAS150M
[WBH2005] G0.936+1.471 17 42 09.60 -27 22 06.96 10.86 WBHGP20CM
GCPS 0.936+1.469 17 42 10.01 -27 22 08.04 10.90 GCPS
16 NVSS J174209-272205 17 42 09.91 -27 22 05.88 10.92 NVSS
MGPS J174209-272157 17 42 09.50 -27 21 56.88 10.98 MGPS2
17 SAO 185612 17 40 56.59 -27 36 23.76 11.05 SAO
HD 316123 17 40 56.52 -27 36 22.68 11.05 HDEC
PPM 267141 17 40 56.52 -27 36 22.68 11.05 PPM
CD-2711803 17 40 56.50 -27 36 22.68 11.05 ACRS
18 PSR J1741-2719 17 41 35.11 -27 19 23.16 11.24 ATNFPULSAR
19 NVSS J174115-274036 17 41 15.60 -27 40 36.12 11.27 NVSS
[WBH2005] G0.630+1.352 17 41 53.50 -27 41 26.16 11.32 WBHGP20CM
20 NSV 23380 17 41 09.50 -27 39 52.92 11.36 GCVSNSVARS
21 V550 Oph 17 40 52.58 -27 35 34.80 11.43 GCVS
QORG J174052.5-273535 17 40 52.51 -27 35 35.16 11.45 QORGCAT
22 NVSS J174154-274146 17 41 54.60 -27 41 45.96 11.71 NVSS
[WBH2005] G0.721+1.301 17 42 18.19 -27 38 26.88 11.72 WBHGP20CM
TGSSADR J174218.2-273826 17 42 18.31 -27 38 26.88 11.73 GMRTAS150M
23 NVSS J174218-273828 17 42 18.41 -27 38 27.96 11.77 NVSS
GCPS 0.722+1.299 17 42 18.60 -27 38 27.96 11.80 GCPS
24 NVSS J174201-271952 17 42 01.80 -27 19 51.96 11.85 NVSS
[WBH2005] G0.952+1.515 17 42 01.90 -27 19 51.96 11.86 WBHGP20CM
25 NSV 23353 17 40 52.61 -27 24 14.04 12.09 GCVSNSVARS
26 NVSS J174232-273319 17 42 32.59 -27 33 19.08 12.19 NVSS
27 NSV 23368 17 41 03.19 -27 39 54.00 12.23 GCVSNSVARS
PPM 267139 17 40 52.42 -27 23 44.88 12.39 PPM
V551 Oph 17 40 52.42 -27 23 44.88 12.39 GCVS
CD-2711801 17 40 52.39 -27 23 44.52 12.39 ACRS
SAO 185610 17 40 52.32 -27 23 44.88 12.41 SAO
28 HD 316121 17 41 18.53 -27 18 53.28 12.55 HDEC
29 NVSS J174059-272102 17 40 59.50 -27 21 02.16 12.95 NVSS
[WBH2005] G0.814+1.701 17 40 59.59 -27 21 01.08 12.95 WBHGP20CM
MGPS J174059-272101 17 40 59.59 -27 21 01.08 12.97 MGPS2
TGSSADR J174059.5-272100 17 40 59.59 -27 21 01.08 12.97 GMRTAS150M
30 PPM 733412 17 41 02.66 -27 19 17.40 13.88 PPM
31 [WBH2005] G0.980+1.424 17 42 26.71 -27 21 18.00 14.09 WBHGP20CM
32 NSV 23466 17 42 19.49 -27 19 40.08 14.15 GCVSNSVARS
33 WDS J17410-2719 17 41 00.00 -27 19 00.12 14.46 WDS

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