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 J1857.9+0210

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1857.9+0210 Swift-XRT detections in the field for 3FGL J1857.9+0210

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 58 45.45 +02 07 10.83 5.89 (3.1 ± 0.8) x 10-3 20 4.214 4.010
2 18 58 09.81 +02 21 28.10 5.76 (2.9 ± 0.8) x 10-3 20 4.054 3.795
3 18 57 10.62 +02 04 31.20 6.21 (2.1 ± 0.7) x 10-3 13 3.076 3.170

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1857.9+0210 Swift-XRT image with known radio, optical and UV sources for 3FGL J1857.9+0210

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J185800.4+020923 18 58 00.46 +02 09 23.76 1.08 CHANDRA
CXO J185800.4+020923 18 58 00.46 +02 09 23.40 1.09 CHANDRA
X185800.46+020923.3 18 58 00.46 +02 09 23.40 1.09 CHANDRA
2 CXO J185805.6+021101 18 58 05.62 +02 11 02.04 2.15 CHANDRA
X185805.86+021059.5 18 58 05.86 +02 10 59.52 2.19 CHANDRA
3 X185808.96+020956.3 18 58 08.95 +02 09 56.16 2.84 CHANDRA
4 CXOGSG J185806.4+020747 18 58 06.43 +02 07 47.64 3.27 CHANDRA
X185806.48+020747.9 18 58 06.48 +02 07 48.00 3.28 CHANDRA
CXO J185806.4+020747 18 58 06.48 +02 07 47.64 3.28 CHANDRA
5 X185810.21+021114.8 18 58 10.20 +02 11 14.64 3.30 CHANDRA
6 X185813.62+020917.6 18 58 13.61 +02 09 17.64 4.10 CHANDRA
7 X185813.13+020834.4 18 58 13.13 +02 08 34.44 4.21 CHANDRA
8 CXOGSG J185810.7+020730 18 58 10.70 +02 07 30.36 4.25 CHANDRA
CXO J185810.7+020730 18 58 10.70 +02 07 30.00 4.25 CHANDRA
X185810.71+020730.0 18 58 10.70 +02 07 30.00 4.25 CHANDRA
9 X185804.89+020618.4 18 58 04.90 +02 06 18.36 4.32 CHANDRA
10 CXOGSG J185808.9+020651 18 58 08.98 +02 06 51.84 4.40 CHANDRA
X185808.97+020651.3 18 58 08.98 +02 06 51.48 4.40 CHANDRA
CXO J185808.9+020651 18 58 08.98 +02 06 51.48 4.40 CHANDRA
11 X185813.28+020801.9 18 58 13.27 +02 08 02.04 4.48 CHANDRA
X185809.86+020639.2 18 58 09.86 +02 06 39.24 4.70 CHANDRA
12 CXOGSG J185754.3+020533 18 57 54.36 +02 05 33.36 4.74 CHANDRA
X185754.44+020532.6 18 57 54.43 +02 05 32.64 4.75 CHANDRA
13 X185753.12+020508.1 18 57 53.11 +02 05 08.16 5.21 CHANDRA
14 CXOGSG J185806.0+020519 18 58 06.50 +02 05 19.68 5.33 CHANDRA
15 X185808.40+020507.0 18 58 08.40 +02 05 07.08 5.77 CHANDRA
16 X185744.67+020509.0 18 57 44.66 +02 05 08.88 6.02 CHANDRA
17 X185819.70+020725.5 18 58 19.70 +02 07 25.68 6.18 CHANDRA
18 X185815.15+020543.0 18 58 15.14 +02 05 43.08 6.28 CHANDRA
CXOGSG J185815.1+020542 18 58 15.17 +02 05 43.08 6.28 CHANDRA
19 X185807.98+020412.0 18 58 07.97 +02 04 12.00 6.55 CHANDRA
CXO J185807.9+020411 18 58 07.97 +02 04 12.00 6.56 CHANDRA
CXOGSG J185807.9+020411 18 58 07.97 +02 04 11.64 6.56 CHANDRA
20 X185802.17+020340.1 18 58 02.16 +02 03 39.96 6.65 CHANDRA
CXOGSG J185802.1+020340 18 58 02.16 +02 03 39.96 6.65 CHANDRA
21 X185817.24+020538.1 18 58 17.23 +02 05 38.04 6.71 CHANDRA
CXOGSG J185817.2+020538 18 58 17.23 +02 05 38.04 6.71 CHANDRA
CXO J185817.2+020538 18 58 17.23 +02 05 38.04 6.71 CHANDRA
22 X185826.46+020949.8 18 58 26.45 +02 09 49.68 7.21 CHANDRA
CXO J185826.5+020923 18 58 26.50 +02 09 23.04 7.26 CHANDRA
23 CXOGSG J185820.3+020425 18 58 20.30 +02 04 25.68 8.10 CHANDRA
CXO J185820.3+020425 18 58 20.30 +02 04 25.32 8.10 CHANDRA
24 CXO J185822.2+020454 18 58 22.20 +02 04 54.48 8.12 CHANDRA
X185822.21+020454.5 18 58 22.20 +02 04 54.48 8.12 CHANDRA
CXOGSG J185822.2+020454 18 58 22.20 +02 04 54.48 8.12 CHANDRA
25 CXO J185753.5+020154 18 57 53.52 +02 01 54.84 8.37 CHANDRA
X185753.56+020154.1 18 57 53.57 +02 01 54.12 8.38 CHANDRA
CXOGSG J185753.4+020154 18 57 53.47 +02 01 54.12 8.38 CHANDRA
26 X185805.87+020153.2 18 58 05.88 +02 01 53.04 8.59 CHANDRA
CXOGSG J185752.8+020135 18 57 52.87 +02 01 35.76 8.71 CHANDRA
CXO J185752.9+020134 18 57 52.92 +02 01 34.68 8.72 CHANDRA
X185752.95+020134.1 18 57 52.94 +02 01 33.96 8.74 CHANDRA
27 CXOGSG J185825.8+020424 18 58 25.90 +02 04 24.60 9.14 CHANDRA
28 CXO J185746.8+020124 18 57 46.85 +02 01 24.60 9.22 CHANDRA
CXOGSG J185746.8+020123 18 57 46.82 +02 01 23.88 9.23 CHANDRA
29 X185803.42+020037.2 18 58 03.41 +02 00 37.08 9.71 CHANDRA
30 CXOGSG J185806.2+020040 18 58 06.24 +02 00 41.04 9.78 CHANDRA
X185806.25+020040.8 18 58 06.24 +02 00 40.68 9.78 CHANDRA
31 X185738.34+020128.3 18 57 38.35 +02 01 28.20 9.99 CHANDRA
32 CXOGSG J185813.0+020100 18 58 13.80 +02 01 00.12 10.00 CHANDRA
X185813.06+020059.9 18 58 13.61 +02 00 59.76 10.00 CHANDRA
CXOGSG J185812.4+020049 18 58 12.48 +02 00 49.68 10.10 CHANDRA
CXO J185812.4+020049 18 58 12.48 +02 00 49.68 10.10 CHANDRA
X185812.48+020049.5 18 58 12.48 +02 00 49.68 10.10 CHANDRA
33 2RXS J185837.8+020803 18 58 37.85 +02 08 03.48 10.27 ROSAT
34 X185746.69+020017.5 18 57 46.68 +02 00 17.64 10.30 CHANDRA
CXOGSG J185746.7+020016 18 57 46.70 +02 00 16.56 10.31 CHANDRA
CXO J185815.0+020046 18 58 15.29 +02 00 46.44 10.40 CHANDRA
CXOGSG J185815.0+020046 18 58 15.29 +02 00 46.44 10.40 CHANDRA
X185815.03+020046.4 18 58 15.29 +02 00 46.44 10.40 CHANDRA
35 X185750.71+015944.3 18 57 50.71 +01 59 44.16 10.63 CHANDRA
CXOGSG J185750.7+015943 18 57 50.74 +01 59 43.80 10.63 CHANDRA
CXO J185750.7+015943 18 57 50.71 +01 59 43.80 10.64 CHANDRA
36 X185803.83+015941.3 18 58 03.84 +01 59 41.28 10.65 CHANDRA
CXOGSG J185803.8+015941 18 58 03.86 +01 59 40.92 10.65 CHANDRA
37 X185759.81+015920.6 18 57 59.81 +01 59 20.76 10.89 CHANDRA
38 X185822.36+020056.8 18 58 22.37 +02 00 56.88 11.14 CHANDRA
CXOGSG J185822.3+020056 18 58 22.37 +02 00 56.88 11.14 CHANDRA
CXO J185822.3+020056 18 58 22.32 +02 00 56.52 11.14 CHANDRA
39 CXOGSG J185811.2+015919 18 58 11.28 +01 59 19.68 11.42 CHANDRA
X185811.31+015919.5 18 58 11.30 +01 59 19.68 11.42 CHANDRA
40 X185737.66+022044.4 18 57 37.66 +02 20 44.52 11.64 CHANDRA
41 XMMSL2 J185810.2+022129 18 58 10.37 +02 21 29.16 11.70 XMM-NEWTON
1WGA J1858.1+0221 18 58 09.19 +02 21 35.64 11.73 ROSAT
2RXP J185809.4+022135 18 58 09.34 +02 21 34.92 11.73 ROSAT
42 CXOGSG J185823.4+020018 18 58 23.42 +02 00 18.00 11.83 CHANDRA
43 X185723.82+021844.1 18 57 23.83 +02 18 43.92 11.99 CHANDRA
44 1RXS J185809.2+022156 18 58 09.22 +02 21 56.52 12.07 ROSAT
45 X185845.32+020708.9 18 58 45.31 +02 07 08.76 12.30 CHANDRA
CXO J185845.3+020708 18 58 45.34 +02 07 08.76 12.30 CHANDRA
CXOGSG J185845.3+020708 18 58 45.34 +02 07 08.76 12.30 CHANDRA
46 X185820.13+015911.9 18 58 20.14 +01 59 11.76 12.38 CHANDRA
CXOGSG J185820.1+015911 18 58 20.14 +01 59 11.76 12.38 CHANDRA
47 X185843.39+020439.2 18 58 43.39 +02 04 39.36 12.71 CHANDRA
CXO J185843.4+020439 18 58 43.39 +02 04 39.36 12.71 CHANDRA
CXOGSG J185843.4+020439 18 58 43.49 +02 04 39.36 12.73 CHANDRA
48 CXOGSG J185831.3+020015 18 58 31.39 +02 00 15.48 13.05 CHANDRA
CXO J185831.4+020015 18 58 31.44 +02 00 15.48 13.06 CHANDRA
49 CXOGSG J185832.2+015853 18 58 32.28 +01 58 54.12 14.25 CHANDRA
50 CXOGSG J185838.3+015943 18 58 38.33 +01 59 43.44 14.61 CHANDRA
51 CXOGSG J185837.3+015851 18 58 37.39 +01 58 51.60 15.09 CHANDRA
CXO J185837.3+015851 18 58 37.37 +01 58 51.24 15.09 CHANDRA
X185837.39+015851.4 18 58 37.39 +01 58 51.24 15.09 CHANDRA
52 CXO J185840.6+015905 18 58 40.68 +01 59 06.00 15.47 CHANDRA
CXOGSG J185840.6+015906 18 58 40.68 +01 59 06.36 15.47 CHANDRA
X185840.71+015905.6 18 58 40.70 +01 59 05.64 15.48 CHANDRA
CXO J185838.4+015833 18 58 38.45 +01 58 33.60 15.49 CHANDRA
X185838.47+015833.4 18 58 38.47 +01 58 33.24 15.50 CHANDRA
CXOGSG J185838.5+015833 18 58 38.52 +01 58 33.24 15.51 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 GPA 035.61-0.46 18 57 58.01 +02 10 36.12 0.39 GPA
2 NVSS J185800+020922 18 58 00.60 +02 09 23.04 1.13 NVSS
3 NVSS J185801+021155 18 58 01.30 +02 11 54.96 1.92 NVSS
4 DKM035.6-00.4 18 57 49.39 +02 10 05.16 2.07 DIXON
BK 035.6-00.4 18 57 49.39 +02 10 05.16 2.07 DIXON
HR 13 18 57 49.39 +02 09 41.04 2.14 DIXON
5 ADG035.6-00.4 18 57 49.39 +02 09 29.16 2.20 DIXON
6 NVSS J185805+021122 18 58 05.40 +02 11 21.84 2.24 NVSS
7 NK1.50 18 58 00.41 +02 07 58.08 2.37 DIXON
8 NVSS J185808+020943 18 58 07.99 +02 09 43.92 2.64 NVSS
9 SNR G035.6-00.4 18 57 55.01 +02 13 00.12 2.85 SNRGREEN
10 NVSS J185759+020708 18 57 59.71 +02 07 09.12 3.12 NVSS
[WBH2005] G35.565-0.491 18 57 59.59 +02 07 06.96 3.15 WBHGP20CM
11 NVSS J185808+020813 18 58 08.69 +02 08 12.84 3.41 NVSS
12 TXS 1855+020 18 58 04.90 +02 07 05.16 3.63 TEXAS
13 NVSS J185757+021405 18 57 57.41 +02 14 04.92 3.86 NVSS
14 PSR J1857+0210 18 57 40.90 +02 10 58.08 4.25 ATNFPULSAR
PSR J1857+0210 18 57 40.90 +02 10 58.08 4.25 PMPULSAR
15 PSR J1857+0212 18 57 43.61 +02 12 41.04 4.28 ATNFPULSAR
16 BG 1855+02 18 58 02.69 +02 06 06.12 4.32 DIXON
17 HC 16 18 57 49.30 +02 14 04.92 4.39 DIXON
18 NVSS J185753+021456 18 57 53.71 +02 14 56.04 4.82 NVSS
19 [SPT2015] VLA J1857+0212 18 57 37.20 +02 12 32.04 5.61 FER2FUSRID
[WBH2005] G35.602-0.367 18 57 37.10 +02 12 32.04 5.62 WBHGP20CM
[WBH2005] G35.602-0.367 18 57 37.10 +02 12 32.04 5.62 WBHGP6CM
[PME2013] J1857+0212 18 57 37.20 +02 12 33.84 5.63 AT2FGLUS
20 NVSS J185810+020534 18 58 10.39 +02 05 34.08 5.63 NVSS
21 [WBH2005] G35.707-0.485 18 58 13.90 +02 14 52.08 6.17 WBHGP20CM
22 MM 40 18 57 31.39 +02 10 04.08 6.57 DIXON
23 PSR J1858+0215 18 58 17.40 +02 15 38.16 7.32 PMPULSAR
PSR J1858+0215 18 58 17.40 +02 15 38.16 7.33 ATNFPULSAR
[WBH2005] G35.734-0.465 18 58 12.60 +02 16 51.96 7.62 WBHGP20CM
24 NVSS J185812+021703 18 58 12.60 +02 17 03.12 7.78 NVSS
25 NVSS J185726+020944 18 57 26.50 +02 09 45.00 7.80 NVSS
26 NVSS J185725+021050 18 57 25.70 +02 10 50.88 8.02 NVSS
27 NVSS J185737+020340 18 57 37.70 +02 03 39.96 8.23 NVSS
[WBH2005] G35.472-0.436 18 57 37.61 +02 03 38.88 8.26 WBHGP20CM
28 NVSS J185731+020505 18 57 31.61 +02 05 06.00 8.28 NVSS
[WBH2005] G35.483-0.360 18 57 22.61 +02 06 23.04 9.57 WBHGP6CM
29 NVSS J185735+020216 18 57 35.69 +02 02 17.16 9.65 NVSS
30 NVSS J185722+020555 18 57 22.20 +02 05 54.96 9.85 NVSS
31 [WBH2005] G35.487-0.342 18 57 19.10 +02 07 04.08 10.13 WBHGP6CM
32 PSR J1858+02 18 58 00.00 +02 00 00.00 10.24 ATNFPULSAR
33 NVSS J185742+020030 18 57 42.79 +02 00 30.96 10.40 NVSS
34 NVSS J185755+015950 18 57 55.39 +01 59 49.92 10.40 NVSS
NVSS J185743+020013 18 57 43.30 +02 00 12.96 10.63 NVSS
35 NVSS J185826+020155 18 58 26.40 +02 01 54.84 10.98 NVSS
36 NVSS J185813+022038 18 58 13.39 +02 20 39.12 11.13 NVSS
37 NVSS J185816+015959 18 58 16.70 +01 59 58.92 11.29 NVSS
38 [WBH2005] G35.424-0.511 18 57 48.31 +01 59 03.84 11.40 WBHGP20CM
39 NVSS J185732+020010 18 57 32.21 +02 00 11.16 11.89 NVSS
40 NVSS J185803+015820 18 58 03.79 +01 58 21.00 11.97 NVSS
41 NVSS J185733+015937 18 57 33.41 +01 59 36.96 12.22 NVSS
42 NVSS J185819+015918 18 58 19.80 +01 59 17.88 12.24 NVSS
43 NVSS J185827+015930 18 58 27.41 +01 59 30.84 13.03 NVSS
44 NVSS J185726+022108 18 57 26.11 +02 21 07.92 13.47 NVSS
45 NVSS J185716+022209 18 57 16.80 +02 22 09.84 15.70 NVSS

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