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 J1858.0+0354

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1858.0+0354 Swift-XRT detections in the field for 4FGL J1858.0+0354


No detected excesses found.

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 57 45.16 +03 46 27.49 6.65 (3.4 ± 1.3) x 10-3 11 2.857 2.573
2 18 57 28.38 +03 53 55.05 6.78 (1.9 ± 1.0) x 10-3 9 2.317 1.817

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1858.0+0354 Swift-XRT image with known radio, optical and UV sources for 4FGL J1858.0+0354

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J185744.5+034631 18 57 44.50 +03 46 31.08 9.64 ROSAT
2RXS J185744.4+034627 18 57 44.45 +03 46 27.48 9.70 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [PME2013] J1858+0353 18 58 02.69 +03 53 11.04 1.65 AT2FGLUS
[SPT2015] ATCA J1858+0353 18 58 02.81 +03 53 09.96 1.66 FER2FUSRID
[WBH2005] G37.141+0.304 18 58 02.50 +03 53 02.04 1.81 WBHGP6CM
2 NVSS J185815+035526 18 58 15.41 +03 55 26.04 2.80 NVSS
3 NVSS J185815+035404 18 58 15.41 +03 54 03.96 2.82 NVSS
[WBH2005] G37.202+0.275 18 58 15.50 +03 55 30.00 2.84 WBHGP20CM
[WBH2005] G37.202+0.275 18 58 15.50 +03 55 30.00 2.84 WBHGP6CM
[SPT2015] VLA J1858+0355 18 58 15.60 +03 55 30.00 2.85 FER2FUSRID
[PME2013] J1858+0355 18 58 15.60 +03 55 33.96 2.89 AT2FGLUS
4 PPM 166901 18 58 13.13 +03 57 03.60 3.14 PPM
BD+03 3851 18 58 13.15 +03 57 03.60 3.15 ACRS
5 [SPT2015] ATCA J1858+0352 18 58 15.70 +03 52 13.08 3.78 FER2FUSRID
6 NVSS J185821+035258 18 58 21.19 +03 52 59.16 4.54 NVSS
7 NVSS J185747+035206 18 57 47.11 +03 52 05.88 5.10 NVSS
8 NVSS J185743+035102 18 57 43.70 +03 51 02.16 6.40 NVSS
9 NVSS J185745+034953 18 57 45.50 +03 49 53.04 6.80 NVSS
10 NVSS J185741+035938 18 57 41.81 +03 59 38.04 7.47 NVSS
[WBH2005] G37.301+0.321 18 58 16.39 +04 02 03.84 7.88 WBHGP6CM
11 NVSS J185744+040105 18 57 44.11 +04 01 05.88 8.13 NVSS
12 NVSS J185817+040212 18 58 17.81 +04 02 12.12 8.15 NVSS
[WBH2005] G37.306+0.317 18 58 17.90 +04 02 12.84 8.15 WBHGP20CM
[WBH2005] G37.306+0.317 18 58 17.81 +04 02 12.84 8.16 WBHGP6CM
[SPT2015] ATCA J1858+0402 18 58 18.19 +04 02 12.12 8.19 FER2FUSRID
13 WDS J18583+0347 18 58 18.00 +03 46 59.88 8.47 WDS
[PME2013] J1857+0353 18 57 30.19 +03 53 12.84 8.71 AT2FGLUS
[SPT2015] VLA J1857+0353 18 57 30.00 +03 53 08.16 8.77 FER2FUSRID
[WBH2005] G37.080+0.425 18 57 30.00 +03 53 07.08 8.77 WBHGP20CM
TGSSADR J185729.9+035310 18 57 29.90 +03 53 09.96 8.77 GMRTAS150M
14 NVSS J185729+035308 18 57 29.81 +03 53 08.16 8.81 NVSS
15 SAO 124106 18 58 19.97 +03 46 47.28 8.86 SAO
BD+03 3853 18 58 20.04 +03 46 47.64 8.87 ACRS
HIP 93128 18 58 20.02 +03 46 47.28 8.87 HIPPARCOS
NSV 11600 18 58 19.99 +03 46 46.92 8.87 GCVSNSVARS
PPM 166903 18 58 20.04 +03 46 47.28 8.87 PPM
NSV 11600 18 58 20.04 +03 46 46.92 8.87 HIC
16 PSR J1858+0346 18 58 22.39 +03 46 37.92 9.28 ATNFPULSAR
17 QORG J185744.7+034633 18 57 44.71 +03 46 32.88 9.59 QORGCAT
BD+03 3849 18 57 44.74 +03 46 30.36 9.62 ACRS
PPM 166886 18 57 44.71 +03 46 30.36 9.63 PPM
SAO 124098 18 57 44.71 +03 46 29.64 9.64 SAO
18 [WBH2005] G37.047+0.201 18 58 14.30 +03 45 11.88 9.87 WBHGP6CM
19 NVSS J185840+040040 18 58 40.51 +04 00 41.04 10.75 NVSS
[WBH2005] G37.253+0.144 18 58 49.01 +03 54 39.96 11.10 WBHGP6CM
20 NVSS J185849+035436 18 58 49.51 +03 54 36.00 11.22 NVSS
21 NVSS J185747+040515 18 57 47.11 +04 05 16.08 11.36 NVSS
[WBH2005] G36.997+0.388 18 57 28.70 +03 47 39.84 11.42 WBHGP6CM
22 NVSS J185728+034744 18 57 28.39 +03 47 44.16 11.43 NVSS
[WBH2005] G36.997+0.388 18 57 28.61 +03 47 39.12 11.43 WBHGP20CM
23 571- 92 18 57 59.52 +03 43 23.52 11.44 NLTT
24 NVSS J185850+035653 18 58 50.90 +03 56 53.88 11.75 NVSS
25 NVSS J185733+040426 18 57 33.10 +04 04 26.04 12.44 NVSS
26 NVSS J185837+034517 18 58 37.30 +03 45 16.92 12.52 NVSS
27 [WBH2005] G37.319+0.162 18 58 52.51 +03 58 39.00 12.58 WBHGP6CM
28 NVSS J185720+040305 18 57 20.40 +04 03 06.12 13.79 NVSS
29 GB6 J1858+0343 18 58 44.30 +03 43 31.08 15.00 GB6

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