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 J2117.9+3729

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2117.9+3729 Swift-XRT detections in the field for 4FGL J2117.9+3729


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 21 17 52.31 +37 27 34.71 5.89 (2.0 ± 0.8) x 10-3 21 2.345 2.471
2 21 17 23.79 +37 26 38.51 6.41 (1.1 ± 0.7) x 10-3 8 2.364 1.670

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2117.9+3729 Swift-XRT image with known radio, optical and UV sources for 4FGL J2117.9+3729

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J211807.6+372344 21 18 07.61 +37 23 44.16 5.64 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J211755+372707 21 17 55.10 +37 27 06.84 2.03 NVSS
2 NVSS J211749+372724 21 17 49.80 +37 27 24.12 2.33 NVSS
3 NVSS J211800+373427 21 18 00.31 +37 34 27.12 5.42 NVSS
WN 2116.0+3721 21 18 01.30 +37 34 28.92 5.47 WENSS
4 NVSS J211808+373413 21 18 08.11 +37 34 14.16 5.54 NVSS
5 NVSS J211735+372455 21 17 35.21 +37 24 55.08 6.14 NVSS
WN 2116.5+3713 21 18 34.39 +37 26 08.16 7.76 WENSS
6 NVSS J211834+372614 21 18 34.70 +37 26 13.92 7.78 NVSS
7 PGC 2101583 21 18 39.91 +37 28 26.04 8.31 PGC2003
8 V1237 Cyg 21 17 26.88 +37 34 46.92 8.44 GCVS
9 NVSS J211819+372050 21 18 19.01 +37 20 51.00 9.20 NVSS
10 B2.3 2116+37 21 18 35.40 +37 34 59.16 9.48 DIXON
VLSSr J211835.0+373614 21 18 35.11 +37 36 14.04 10.26 VLSSR
11 PGC 2104237 21 18 40.99 +37 34 49.08 10.27 PGC2003
WN 2116.5+3723 21 18 35.30 +37 36 20.88 10.38 WENSS
TGSSADR J211835.3+373621 21 18 35.40 +37 36 21.96 10.39 GMRTAS150M
12 NVSS J211835+373623 21 18 35.30 +37 36 23.04 10.40 NVSS
TXS 2116+373 21 18 35.30 +37 36 23.04 10.40 TEXAS
GB6 J2118+3736 21 18 35.59 +37 36 33.84 10.57 GB6
2116+3723 21 18 37.10 +37 36 33.84 10.78 NORTH6CM
13 NVSS J211810+374047 21 18 10.61 +37 40 46.92 11.99 NVSS
14 CYG 21 17 00.50 +37 25 07.32 12.09 WOODEBCAT
15 PPM 86359 21 18 41.57 +37 39 05.04 13.22 PPM
BD+37 4264 21 18 41.52 +37 39 05.76 13.22 ACRS
SAO 71190 21 18 41.59 +37 39 05.76 13.23 SAO

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