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 J1857.2+0059

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1857.2+0059 Swift-XRT detections in the field for 3FGL J1857.2+0059

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 56 51.76 +01 14 49.61 5.00 (1.4 ± 0.4) x 10-3 20 3.550 3.261

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 56 55.41 +01 04 31.27 6.21 (1.2 ± 0.4) x 10-3 16 2.691 2.905
2 18 56 31.29 +01 01 43.40 5.70 (1.2 ± 0.5) x 10-3 18 2.622 2.678
3 18 56 39.17 +01 14 14.27 4.80 (4 ± 3) x 10-4 18 2.436 1.091

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1857.2+0059 Swift-XRT image with known radio, optical and UV sources for 3FGL J1857.2+0059

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J185713.4+010146 18 57 13.44 +01 01 46.56 2.61 XMM-NEWTON
2 3XMM J185719.6+005656 18 57 19.68 +00 56 56.76 2.61 XMM-NEWTON
3 3XMM J185704.4+010150 18 57 04.42 +01 01 50.16 3.63 XMM-NEWTON
4 3XMM J185724.9+010147 18 57 24.91 +01 01 47.28 3.73 XMM-NEWTON
5 3XMM J185709.1+010251 18 57 09.14 +01 02 52.08 3.91 XMM-NEWTON
6 3XMM J185706.4+005422 18 57 06.43 +00 54 22.32 5.19 XMM-NEWTON
7 3XMM J185730.8+010304 18 57 30.84 +01 03 04.32 5.68 XMM-NEWTON
8 3XMM J185654.6+005546 18 56 54.70 +00 55 46.20 5.97 XMM-NEWTON
9 3XMM J185737.7+005741 18 57 37.73 +00 57 41.04 6.05 XMM-NEWTON
10 3XMM J185649.3+010014 18 56 49.34 +01 00 14.40 6.32 XMM-NEWTON
11 3XMM J185738.5+005703 18 57 38.52 +00 57 03.60 6.42 XMM-NEWTON
12 3XMM J185705.2+010514 18 57 05.28 +01 05 13.92 6.46 XMM-NEWTON
13 3XMM J185648.0+005814 18 56 48.10 +00 58 14.88 6.61 XMM-NEWTON
14 3XMM J185659.5+010540 18 56 59.50 +01 05 40.92 7.48 XMM-NEWTON
15 3XMM J185709.1+005107 18 57 09.19 +00 51 07.56 8.15 XMM-NEWTON
16 3XMM J185642.4+010107 18 56 42.41 +01 01 08.04 8.20 XMM-NEWTON
17 3XMM J185648.8+010431 18 56 48.82 +01 04 31.44 8.31 XMM-NEWTON
18 3XMM J185745.5+010306 18 57 45.53 +01 03 06.12 8.74 XMM-NEWTON
19 3XMM J185643.6+005446 18 56 43.63 +00 54 46.80 8.83 XMM-NEWTON
20 3XMM J185655.3+010650 18 56 55.32 +01 06 50.40 9.01 XMM-NEWTON
21 3XMM J185651.7+010639 18 56 51.77 +01 06 39.96 9.37 XMM-NEWTON
22 3XMM J185637.4+010218 18 56 37.51 +01 02 19.68 9.71 XMM-NEWTON
3XMM J185637.4+010218 18 56 37.27 +01 02 17.16 9.76 XMM-NEWTON
23 3XMM J185755.2+010037 18 57 55.27 +01 00 37.08 10.35 XMM-NEWTON
24 3XMM J185735.4+010809 18 57 35.42 +01 08 09.96 10.42 XMM-NEWTON
25 3XMM J185756.7+010059 18 57 56.74 +01 01 00.12 10.77 XMM-NEWTON
26 3XMM J185735.2+010840 18 57 35.28 +01 08 40.92 10.86 XMM-NEWTON
27 3XMM J185755.2+010245 18 57 55.30 +01 02 45.60 10.86 XMM-NEWTON
28 3XMM J185758.9+005920 18 57 58.94 +00 59 20.76 11.17 XMM-NEWTON
29 3XMM J185630.9+005605 18 56 30.96 +00 56 05.64 11.26 XMM-NEWTON
30 3XMM J185733.9+010930 18 57 33.94 +01 09 30.60 11.44 XMM-NEWTON
31 3XMM J185629.5+005641 18 56 29.59 +00 56 42.00 11.44 XMM-NEWTON
32 3XMM J185745.0+005020 18 57 45.19 +00 50 20.40 11.71 XMM-NEWTON
33 3XMM J185749.5+005119 18 57 49.58 +00 51 19.44 11.81 XMM-NEWTON
34 3XMM J185627.1+005812 18 56 27.19 +00 58 13.08 11.81 XMM-NEWTON
35 3XMM J185720.1+011056 18 57 20.18 +01 10 56.28 11.85 XMM-NEWTON
36 3XMM J185638.4+010729 18 56 38.35 +01 07 27.48 12.22 XMM-NEWTON
3XMM J185638.4+010729 18 56 38.45 +01 07 29.64 12.22 XMM-NEWTON
37 3XMM J185633.2+010551 18 56 33.34 +01 05 51.72 12.23 XMM-NEWTON
3XMM J185638.4+010729 18 56 38.62 +01 07 33.96 12.24 XMM-NEWTON
3XMM J185633.2+010551 18 56 33.14 +01 05 49.20 12.24 XMM-NEWTON
3XMM J185633.2+010551 18 56 33.24 +01 05 53.16 12.26 XMM-NEWTON
38 3XMM J185645.5+010930 18 56 45.55 +01 09 30.60 12.58 XMM-NEWTON
3XMM J185645.5+010930 18 56 45.48 +01 09 30.24 12.59 XMM-NEWTON
39 3XMM J185640.1+010904 18 56 40.13 +01 09 02.88 13.05 XMM-NEWTON
3XMM J185640.1+010904 18 56 40.46 +01 09 16.56 13.17 XMM-NEWTON
3XMM J185638.9+010920 18 56 39.10 +01 09 20.52 13.44 XMM-NEWTON
3XMM J185638.9+010920 18 56 38.90 +01 09 18.36 13.44 XMM-NEWTON
40 3XMM J185638.9+010920 18 56 38.59 +01 09 25.20 13.58 XMM-NEWTON
41 3XMM J185636.3+010908 18 56 36.36 +01 09 08.28 13.75 XMM-NEWTON
3XMM J185637.2+010926 18 56 37.22 +01 09 26.64 13.83 XMM-NEWTON
42 3XMM J185631.7+010822 18 56 32.40 +01 08 24.00 14.02 XMM-NEWTON
3XMM J185631.7+010822 18 56 31.87 +01 08 21.84 14.03 XMM-NEWTON
3XMM J185631.7+010822 18 56 31.82 +01 08 21.84 14.04 XMM-NEWTON
2RXS J185638.0+010955 18 56 38.81 +01 09 55.08 14.04 ROSAT
3XMM J185631.7+010822 18 56 31.70 +01 08 22.20 14.06 XMM-NEWTON
3XMM J185631.7+010822 18 56 31.61 +01 08 24.36 14.11 XMM-NEWTON
43 3XMM J185636.1+010950 18 56 36.91 +01 09 50.04 14.31 XMM-NEWTON
3XMM J185636.1+010950 18 56 36.55 +01 09 57.24 14.32 XMM-NEWTON
44 3XMM J185632.9+010941 18 56 32.93 +01 09 41.76 14.75 XMM-NEWTON
45 CXOGSG J185629.6+010858 18 56 29.62 +01 08 58.56 14.86 CHANDRA
X185629.56+010858.3 18 56 29.57 +01 08 58.20 14.86 CHANDRA
46 3XMM J185636.9+011110 18 56 36.96 +01 11 09.96 15.19 XMM-NEWTON
47 3XMM J185802.1+004747 18 58 02.18 +00 47 47.76 16.52 XMM-NEWTON
48 3XMM J185626.6+011040 18 56 26.62 +01 10 40.08 16.55 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J185710+010223 18 57 10.20 +01 02 24.00 3.38 NVSS
2 NVSS J185702+010124 18 57 02.81 +01 01 23.88 3.63 NVSS
3 PSR J1857+0057 18 57 00.79 +00 57 16.92 3.87 ATNFPULSAR
4 NVSS J185723+010227 18 57 23.40 +01 02 26.88 3.99 NVSS
5 NVSS J185705+010326 18 57 05.30 +01 03 27.00 4.82 NVSS
6 NVSS J185658+010300 18 56 58.51 +01 03 00.00 5.50 NVSS
7 NVSS J185714+010447 18 57 14.59 +01 04 46.92 5.61 NVSS
8 NVSS J185721+010441 18 57 21.41 +01 04 41.16 5.79 NVSS
9 NVSS J185723+010608 18 57 23.30 +01 06 07.92 7.32 NVSS
10 NVSS J185644+010016 18 56 44.21 +01 00 15.84 7.60 NVSS
11 NVSS J185743+005656 18 57 43.51 +00 56 57.12 7.64 NVSS
12 NVSS J185711+010658 18 57 11.90 +01 06 57.96 7.81 NVSS
13 NVSS J185746+005754 18 57 46.61 +00 57 55.08 8.18 NVSS
14 NVSS J185735+010613 18 57 35.81 +01 06 12.96 8.86 NVSS
15 NVSS J185740+010505 18 57 40.80 +01 05 04.92 8.87 NVSS
16 NVSS J185749+010107 18 57 49.39 +01 01 06.96 8.98 NVSS
17 NVSS J185719+010808 18 57 19.30 +01 08 08.88 9.06 NVSS
18 1855-0052 18 57 49.70 +00 56 20.04 9.29 NORTH6CM
19 NVSS J185737+010714 18 57 37.70 +01 07 14.16 9.96 NVSS
20 NVSS J185722+010900 18 57 22.61 +01 08 60.00 10.04 NVSS
21 NVSS J185703+004915 18 57 03.41 +00 49 14.88 10.29 NVSS
22 NVSS J185633+005957 18 56 33.00 +00 59 57.12 10.34 NVSS
23 [WBH2005] G34.644-0.920 18 57 50.11 +01 06 12.96 11.39 WBHGP20CM
24 [WBH2005] G34.300-0.745 18 56 35.11 +00 52 39.00 11.76 WBHGP20CM
[WBH2005] G34.422-1.031 18 57 49.61 +00 51 20.16 11.81 WBHGP20CM
25 NVSS J185749+005119 18 57 49.51 +00 51 19.08 11.81 NVSS
TGSSADR J185749.6+005119 18 57 49.61 +00 51 19.08 11.82 GMRTAS150M
26 PSR J1856+0102 18 56 28.51 +01 02 11.04 11.83 ATNFPULSAR
TXS 1855+007 18 57 49.70 +00 51 20.16 11.83 TEXAS
27 NVSS J185703+004731 18 57 03.91 +00 47 30.84 11.94 NVSS
28 [WBH2005] G34.424-1.047 18 57 53.21 +00 51 01.08 12.70 WBHGP20CM
29 NVSS J185756+010617 18 57 57.00 +01 06 16.92 12.83 NVSS
30 VLSSr J185633.6+010730 18 56 33.60 +01 07 31.08 13.14 VLSSR
31 NVSS J185639+011006 18 56 39.50 +01 10 05.88 13.96 NVSS
32 NVSS J185636+010928 18 56 36.19 +01 09 28.08 14.01 NVSS
33 NVSS J185758+010837 18 57 58.20 +01 08 36.96 14.48 NVSS
34 NVSS J185755+011106 18 57 55.10 +01 11 07.08 15.70 NVSS
35 NVSS J185627+010949 18 56 27.50 +01 09 48.96 15.82 NVSS
[WBH2005] G34.374-1.087 18 57 56.30 +00 47 13.92 15.92 WBHGP20CM

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